for

ago是用于过去时间的，before是用于完成时的。

应该是foroneweek。根据查询相关公开信息显示，没有ononeweek这种说法，有foroneweek这种表达方式，是一个星期的意思，所以是foroneweek。

什么的区别

因为完成时表示的是一个延续到现在的动作

现在完成时态。for+一段时间用完成时态，在完成时态中要用延续性动词表示动作的持续。

不可以。过去时代表的是那个完成了的动作比如死了，那就是当时死了，它没有延长的时间段的，而完成时就是代表已经完成了它是有一个时间段的，所以不能用于过去式里。

要看整个句子的意思吖!!要是help是名词的话,整个句子就有语病了.

i believe i can loveyou give me your loving carei believe in what we arei don"t know where i would bewithout you staying with mesometimes, i"m lost in miseryyou will take me all the way,i"m not afraidoh, you and me, hand in handto everywhere amazingbe my friend, oh friendwe are forever friendsoh baby,you give me all the love i needyou are the only onei believe i can loveyou give me your loving carei believe in what we areyou will take me all the way,as day by dayoh, you and me, hand in handto everywhere amazingbe my friend, oh friendwe are forever friendsoh baby,you give me all the love i needyou are the only oneyou will take me all the way,as day by dayoh, you and me, hand in handto everywhere amazingbe my friend, oh friendwe are forever friendsoh baby,you give me all the love i needyou are the only one哈哈~~我也很喜欢这首歌啊~

这句话是不对的，有语法错误。应该改为：Thank you for helping me.

except,besides,except for用法的关联和区别 1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／hadnothing等词形成搭配用法,或者与全部肯定词all、everything、ev?eryone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；而besides作"除…之外"时则表示"另外附加"的含义,相当于"in addition to".试比较下列例句: 1)He did not hing except watch TV yesterday. 2)He said nothing except to smile just now. 3)All the students took at rip except Tom yesterday. 4)We need 3 more persons to finish the job besides／inaddition to us two. 2.作介词用法时的except后可接多种情况的介词短语.在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句.例如: 1)The weather is fine today except in the northwest.此句相当于: The weather is fine today except that it is in the northwest. 2)His mother never takes any exercise except on the dance floor.此句相当于: His mother never takes any exercise except that she has adance on the floor. 需要强调的是except与exceptfor的用法区别: 1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的.例如,试比较: All the buildings are excellent except this one. All the buildings are excellent except for their location或者All the buildings are excellent except that the place on which the buid?ings are built is notgood. 2)当except用在句首时往往改用exceptfor.例如: There was no single person in the dark street that night except apoliceman on his duty.此句相当于: Except for apoliceman on his duty,there was no single person in the dark street that night. 3.相当于连词用法的except与相当于连词用法的besides的区别仍然保持它们作介词用法的含义.试比较下列例句: 1)Tom is a good student ex?cept that he is careless.此句相当于:Tom is a goods tudent except for his carelessness. 2)Tom seldom comes late to school except when it rains hard.此句相当于:Tom seldom comes late to school except on a heavily rainy day.

except与except for的区别（1）except表示“除去，不包括”，强调所排除的“不包括在内”，一般表示同类之间的关系，常同nothing, all, none, nobody, any等不定代词以及every连用。except 经常接名词或代词，但也可接副词，介词短语，例如：① The office is open every day except Sundays. 除了星期日这家公司每天都营业。 ② You can have any of the cakes except this one. 除了这块蛋糕，你哪块都能吃。 ③ She saw nothing except snow. 除了雪她什么也没看见。（nothing except = nothing but = only）（2）except经常接名词、代词，也可接副词，介词短语，不带to的不定式或从句等。例如：④ She looked everywhere except here. 除了这里，她到处看。⑤ You may drop in at any time except at noon. 除了中午，你任何时候来都可以。⑥ She doesn"t do anything except sit and watch TV. 除了坐着看电视外，她什么也不做。⑦ It was a good hotel except that it was rather noisy. 这家旅馆还不错，只可惜吵。⑧ He usually goes to work by bicycle except when it rains. 除了下雨的时候，他通常骑自行车去上班。（3）except for也表示“除…以外”，指对某种基本情况进行具体的细节方面的修正。它同except的区别是：except for后接的词同句子中的整体词（主语）不是同类的，指从整体中除去一个细节，一个方面；而except后接的词同整体词（主语）一般是同类，指在同类的整体中除去一个部分。例如:⑨ I can answer all the questions except for the last one. 除了最后一题外，所有题目我都可以解答。⑩ Your writing is good except for a few grammar mistakes. 除了几处语法错误外，你的作文写得很好。except,besides,except for用法的关联和区别1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／had nothing等词形成搭配用法,或者与全部肯定词all、everything、evue011eryone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；而besides作"除…之外"时则表示"另外附加"的含义,相当于"in addition to"。试比较下列例句:1)He did not hing except watch TV yesterday.2)He said nothing except to smile just now.3)All the students took at rip except Tom yesterday.4)We need 3 more persons to finish the job besides／inaddition to us two.2.作介词用法时的except后可接多种情况的介词短语。在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句。例如:1)The weather is fine today except in the northwest.此句相当于: The weather is fine today except that it is in the northwest. 2)His mother never takes any exercise except on the dance floor.此句相当于:His mother never takes any exercise except that she has adance on the floor.需要强调的是except与exceptfor的用法区别:1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的。例如,试比较:All the buildings are excellent except this one.All the buildings are excellent except for their location或者All the buildings are excellent except that the place on which the buidue011ings are built is notgood.2)当except用在句首时往往改用exceptfor。例如:There was no single person in the dark street that night except apoliceman on his duty.此句相当于:Except for apoliceman on his duty,there was no single person in the dark street that night.3.相当于连词用法的except与相当于连词用法的besides的区别仍然保持它们作介词用法的含义。试比较下列例句:1)Tom is a good student exue011cept that he is careless.此句相当于:Tom is a goods tudent except for his carelessness.2)Tom seldom comes late to school except when it rains hard.此句相当于:Tom seldom comes late to school except on a heavily rainy day.except/except for/except that/except when 的区别 （1）except表示“除去，不包括”，强调所排除的“不包括在内”，一般表示同类之间的关系，常同nothing, all, none, nobody, any等不定代词以及every连用。except 经常接名词或代词，但也可接副词，介词短语，例如： ① The office is open every day except Sundays. 除了星期日这家公司每天都营业。 ② You can have any of the cakes except this one. 除了这块蛋糕，你哪块都能吃。 ③ She saw nothing except snow. 除了雪她什么也没看见。（nothing except = nothing but = only） （2）except经常接名词、代词，也可接副词，介词短语，不带to的不定式或从句等。例如： ④ She looked everywhere except here. 除了这里，她到处看。 ⑤ You may drop in at any time except at noon. 除了中午，你任何时候来都可以。 ⑥ She doesn"t do anything except sit and watch TV. 除了坐着看电视外，她什么也不做。 ⑦ It was a good hotel except that it was rather noisy. 这家旅馆还不错，只可惜吵。 ⑧ He usually goes to work by bicycle except when it rains. 除了下雨的时候，他通常骑自行车去上班。 （3）except for也表示“除……以外”，指对某种基本情况进行具体的细节方面的修正。它同except的区别是：except for后接的词同句子中的整体词（主语）不是同类的，指从整体中除去一个细节，一个方面；而except后接的词同整体词（主语）一般是同类，指在同类的整体中除去一个部分。例如: ⑨ I can answer all the questions except for the last one. 除了最后一题外，所有题目我都可以解答。 ⑩ Your writing is good except for a few grammar mistakes. 除了几处语法错误外，你的作文写得很好。

except for与except和besides的用法不同。besides表示一种累加的关系，表示除了什么之外，还有……，besides后面的名词和代词之类的是包括在内。except/except for表示的都是一种排除关系，表示除了什么之外，不再有……，它们后面的名词和代词是排除在外地不包括在内的，但是也有区别。except主要用来谈论同类的人或物，except for可以用来谈论不同类的事物，很少用来谈论人。 except的用法 except用作及物动词时的基本意思是“把…除外”。引申可指“免除”，一般接人作宾语，且通常用于否定结构。 except与介词to或against连用，意为“反对…”；与介词for连用表示“不包括在…之内”。 except用作介词可表示“除…之外”，通常指所排除的事物不在所述范围之内，后面可接名词或代词。 except可接反身代词、副词、介词短语或状语从句，也可接(省略to的)动词不定式、动名词、基数词，还可接that或wh-从句。 except用作连词表示除非，除了…之外，若不是。 except for的用法 except for...是"除了因为……；要不是……；除去……一点外"的意思，表示"对一个人或事物，先做一个整体评价，然后再就局部提出一点看法"。即一部分被肯定，另一部分被否定，这就是所谓的"排除否定式"。其判别标志是：除去的与保留的"不是同类项"。

except,besides,except for用法的关联和区别 1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／hadnothing等词形成搭配用法,或者与全部肯定词all、everything、evue011eryone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；而besides作"除…之外"时则表示"另外附加"的含义,相当于"in addition to"。试比较下列例句: 1)He did not hing except watch TV yesterday. 2)He said nothing except to smile just now. 3)All the students took at rip except Tom yesterday. 4)We need 3 more persons to finish the job besides／inaddition to us two. 2.作介词用法时的except后可接多种情况的介词短语。在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句。例如: 1)The weather is fine today except in the northwest.此句相当于: The weather is fine today except that it is in the northwest. 2)His mother never takes any exercise except on the dance floor.此句相当于: His mother never takes any exercise except that she has adance on the floor. 需要强调的是except与except for的用法区别: 1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的。例如,试比较: All the buildings are excellent except this one. All the buildings are excellent except for their location或者All the buildings are excellent except that the place on which the buidue011ings are built is notgood. 2)当except用在句首时往往改用except for。例如: There was no single person in the dark street that night except apoliceman on his duty.此句相当于: Except for apoliceman on his duty,there was no single person in the dark street that night. 3.相当于连词用法的except与相当于连词用法的besides的区别仍然保持它们作介词用法的含义。试比较下列例句: 1)Tom is a good student exue011cept that he is careless.此句相当于:Tom is a goods tudent except for his carelessness. 2)Tom seldom comes late to school except when it rains hard.此句相当于:Tom seldom comes late to school except on a heavily rainy day . Practice 1. I know nothing about the young lady＿＿＿she is from Beijing.(2000年上海高考题) A. except B. except for C. except that D. besides 2. The suit fitted him well＿＿＿the colour was a little brighter.(2000年上海春季高考题) A. except for B. except that C. except when D. besides 3. He did have nothing to eat but＿＿＿＿＿. A. to steal some food from the shop B. to rob some food of the shop C. steal some food from the shop D. rob some food of the shop 4. Jane was quite alone in the world＿＿＿＿an aunt in Brazil. A. except B. except for C. besides D. instead of 5.＿＿＿＿being a little largeue584the hat looks nice. A. Apart from B. Except C. But D. Besides for 6. In no country＿＿＿Britain can one experience four seasons in the course of a single day. A. other than B. anything that C. more than D. rather than 7. He gets up early every day＿＿＿Sunday. A. besides B. except for C. except that D. except 8. We need fifteen more people＿＿＿＿＿＿our team to do the job. A. besides B. except for C. except that D. except Keyue584 1. C 2. B 3. A 4. B 5. A 6. A 7. D 8.A

except 表示“除……外，(其余都)……”，常与“all，every，no，none，nothing”等含有整体肯定或否定意义的词连用。except for： 它的宾语与前述对象完全是两回事。例如：The room was very cold and, except for Jack, entirely empty.这个房间很阴冷，而且除了杰克，完全是空荡荡的。Except：指同一类事物的总体中除去一部分。如：He gets up early everyday except Sunday. 除星期天外，他每天早起。似乎没有except from这个搭配吧，这么多年没有见过！也许是本人见识少吧！嘿嘿！

一、 except用于表示同类事物之间的关系,其意为"除……以外"、"除去". 　　1.except后面可接名词、代词、动词、副词、介词短语和从句等.如： 　　We have an English lesson every day except Sunday.除星期天外,我们每天有一堂英语课.(接名词) 　　They all went to the park last Sunday except him.除了他以外,上星期天他们都去公园了.(接代词) 　　Every day Mary does nothing except watch TV.每天玛丽除了看电视以外什么都不干.(except后接动词时,一般为带to的动词不定式.但如果except前面有谓语动词do或其相应形式时,后面通常接省略to的动词不定式.如此句.) 　　He always goes to work by bike except recently.除最近外,他一般都骑自行车上班.(接副词) 　　After breakfast the students went nowhere except to school.吃完早餐,学生们除了上学就不到别处去了.(接介词短语) 　　My father usually goes to work by bike except when it rains.除下雨天外,我爸爸通常骑自行车上班.(接从句) 　　2.except常用在all,whole,any,every,no等词,及anything,anybody,anyone,everything,everybody,everyone等不定代词之后.如： 　　She ate everything on the plate except the carrots.除胡萝卜外她把盘子里的东西都吃了. 　　I"ve cleaned all the rooms except the toilet.除了厕所,我清扫了所有房间. 　　二、 except for用于表示对主要部分的肯定和对局部的否定.它不表示同类事物之间的关系,其意思为： 　　1."除了……以外".如： 　　Smith is a good man,except for his bad temper.史密斯除了脾气不好外,是个好人. 　　The movie was good except for the ending.这部电影除了结尾之外都很好. 　　2."除去为了……".如： 　　Mother wouldn"t give him any money except for books and stationery.除了买书和文具外,妈妈不给他任何钱. 　　3."如果不是","若非".如： 　　Except for you,I would pass the exam.如果不是你,我就会通过考试. 　　4."except for+名词"结构一般可以改写成"except+that从句".如： 　　This will do except for the length.= This will do except that it is too long.如果不是它太长的话,这会很好. 　　All are here except for the absence of Tina.= All are here except that Tina is absent.除了蒂娜以外,大家都在这里. 　　三、 except与except for的互换 　　1.except与except for有时可以通用,不过,一般情况下,except for可置于句首,而except则不能.如： 　　Everyone is here except Tom.(或：Except for Tom everyone is here.)除汤姆外,大家都到了. 　　2.except与except for在句中也可互换. 　　一般来说,否定句中用except,肯定句式可以用except for来替换.如： 　　This article has no blunders except a few mistakes.这篇文章除了一点小错外没有大错. 　　此句可改为：This article is instructive except for a few blunders.这篇文章除了有些错误外,是有教育意义的. 　　不过,在前后有相称的同类词语时,应用except,否则用except for.如： 　　We come to school every day except Sunday.除星期天外,我们天天上学.(句中every day与Sunday同类) 　　This dress is ready except for the buttons.衣服做好了,只是钮扣未缝上.(句中ready与buttons不同类)

except,besides,except for用法的关联和区别 1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／hadnothing等词形成搭配用法,或者与全部肯定词all、everything、everyone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；而besides作"除…之外"时则表示"另外附加"的含义,相当于"in addition to"。试比较下列例句: 1)He did not hing except watch TV yesterday. 2)He said nothing except to smile just now. 3)All the students took at rip except Tom yesterday. 4)We need 3 more persons to finish the job besides／inaddition to us two. 2.作介词用法时的except后可接多种情况的介词短语。在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句。例如: 1)The weather is fine today except in the northwest.此句相当于: The weather is fine today except that it is in the northwest. 2)His mother never takes any exercise except on the dance floor.此句相当于: His mother never takes any exercise except that she has adance on the floor. 需要强调的是except与exceptfor的用法区别: 1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的。例如,试比较: All the buildings are excellent except this one. All the buildings are excellent except for their location或者All the buildings are excellent except that the place on which the buidings are built is notgood. 2)当except用在句首时往往改用exceptfor。例如: There was no single person in the dark street that night except apoliceman on his duty.此句相当于: Except for apoliceman on his duty,there was no single person in the dark street that night. 3.相当于连词用法的except与相当于连词用法的besides的区别仍然保持它们作介词用法的含义。试比较下列例句: 1)Tom is a good student except that he is careless.此句相当于:Tom is a goods tudent except for his carelessness. 2)Tom seldom comes late to school except when it rains hard.此句相当于:Tom seldom comes late to school except on a heavily rainy day.

一、 except用于表示同类事物之间的关系,其意为"除……以外"、"除去". 　　1.except后面可接名词、代词、动词、副词、介词短语和从句等.如： 　　We have an English lesson every day except Sunday.除星期天外,我们每天有一堂英语课.(接名词) 　　They all went to the park last Sunday except him.除了他以外,上星期天他们都去公园了.(接代词) 　　Every day Mary does nothing except watch TV.每天玛丽除了看电视以外什么都不干.(except后接动词时,一般为带to的动词不定式.但如果except前面有谓语动词do或其相应形式时,后面通常接省略to的动词不定式.如此句.) 　　He always goes to work by bike except recently.除最近外,他一般都骑自行车上班.(接副词) 　　After breakfast the students went nowhere except to school.吃完早餐,学生们除了上学就不到别处去了.(接介词短语) 　　My father usually goes to work by bike except when it rains.除下雨天外,我爸爸通常骑自行车上班.(接从句) 　　2.except常用在all,whole,any,every,no等词,及anything,anybody,anyone,everything,everybody,everyone等不定代词之后.如： 　　She ate everything on the plate except the carrots.除胡萝卜外她把盘子里的东西都吃了. 　　I"ve cleaned all the rooms except the toilet.除了厕所,我清扫了所有房间. 　　二、 except for用于表示对主要部分的肯定和对局部的否定.它不表示同类事物之间的关系,其意思为： 　　1."除了……以外".如： 　　Smith is a good man,except for his bad temper.史密斯除了脾气不好外,是个好人. 　　The movie was good except for the ending.这部电影除了结尾之外都很好. 　　2."除去为了……".如： 　　Mother wouldn"t give him any money except for books and stationery.除了买书和文具外,妈妈不给他任何钱. 　　3."如果不是","若非".如： 　　Except for you,I would pass the exam.如果不是你,我就会通过考试. 　　4."except for+名词"结构一般可以改写成"except+that从句".如： 　　This will do except for the length.= This will do except that it is too long.如果不是它太长的话,这会很好. 　　All are here except for the absence of Tina.= All are here except that Tina is absent.除了蒂娜以外,大家都在这里. 　　三、 except与except for的互换 　　1.except与except for有时可以通用,不过,一般情况下,except for可置于句首,而except则不能.如： 　　Everyone is here except Tom.(或：Except for Tom everyone is here.)除汤姆外,大家都到了. 　　2.except与except for在句中也可互换. 　　一般来说,否定句中用except,肯定句式可以用except for来替换.如： 　　This article has no blunders except a few mistakes.这篇文章除了一点小错外没有大错. 　　此句可改为：This article is instructive except for a few blunders.这篇文章除了有些错误外,是有教育意义的. 　　不过,在前后有相称的同类词语时,应用except,否则用except for.如： 　　We come to school every day except Sunday.除星期天外,我们天天上学.(句中every day与Sunday同类) 　　This dress is ready except for the buttons.衣服做好了,只是钮扣未缝上.(句中ready与buttons不同类)

except for与except和besides的用法不同。besides表示一种累加的关系，表示除了什么之外，还有……，besides后面的名词和代词之类的是包括在内。except/except for表示的都是一种排除关系，表示除了什么之外，不再有……，它们后面的名词和代词是排除在外地不包括在内的，但是也有区别。except主要用来谈论同类的人或物，except for可以用来谈论不同类的事物，很少用来谈论人。except的用法：except用作及物动词时的基本意思是“把…除外”。引申可指“免除”，一般接人作宾语，且通常用于否定结构。except与介词to或against连用，意为“反对…”；与介词for连用表示“不包括在…之内”。except用作介词可表示“除…之外”，通常指所排除的事物不在所述范围之内，后面可接名词或代词。except可接反身代词、副词、介词短语或状语从句，也可接（省略to的）动词不定式、动名词、基数词，还可接that或wh-从句。except用作连词表示除非，除了…之外，若不是。

except,except for用法的关联和区别如下： 1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／hadnothing等词形成搭配用法,或者与全部肯定词all、everything、everyone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；试比较下列例句: 1)He did not hing except watch TV yesterday. 2)He said nothing except to smile just now. 3)All the students took at rip except Tom yesterday. 4)We need 3 more persons to finish the job besides／inaddition to us two. 2.作介词用法时的except后可接多种情况的介词短语。在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句。例如: 1)The weather is fine today except in the northwest.此句相当于: The weather is fine today except that it is in the northwest. 2)His mother never takes any exercise except on the dance floor.此句相当于: His mother never takes any exercise except that she has adance on the floor. 需要强调的是except与exceptfor的用法区别: 1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的。例如,试比较: All the buildings are excellent except this one. All the buildings are excellent except for their location或者All the buildings are excellent except that the place on which the buid?ings are built is notgood. 2)当except用在句首时往往改用exceptfor。例如: There was no single person in the dark street that night except apoliceman on his duty.此句相当于: Except for apoliceman on his duty,there was no single person in the dark street that night.

except for1. 除了…外；除去，撇开，只是2. 要不是(由于)，若无，除非[亦作 but for]后面是不主要的内容。An instrument made by an old master can now be copied in every detail—except for the sound.一把由年老的大师制造的乐器现在可以被复制到每一个细节，除了声音以外。To paraphrase Winston Churchill, it is the worst kind of accounting, except for all the others.正如丘吉尔所说，如果没有其它的会计方法，公允价值是最差的一种。except of除了……以外Generally the party who loses will pay, except of any seperate agreement.一般来说，谁败诉，谁支付所有的费用，除非另有规定。Except of the reason of the macroscopic economic policy, there is also the reason of enterprise internal management.既有宏观经济政策层面的原因，也有企业自身内部管理的原因。

besides 是包括的,这个是他们的不同.比如 besides Jim,his classmates are all sixteen years old.这里Jim就也是16岁,而第一句里的就不包括 except for/except是说,除了这个,其他的还有什么,不再包括说了的.比如,his classmates are all sixteen years old except Jim.这里是不包括Jim的. except是形容同类事物,except for是不同类的.比如刚才举的那个例子,classmates 和Jim都是学生（至少都是人吧）所以用except.这个句子：The article is good except for a few mistake.这里的mistake和article就不是同一类吧,所以用except for except意为"只有……除外;除去……",后跟名词或代词作宾语,强调从整体中除去部分,即except后的部分不包括在整体之内.因此,常和all,everything,no one,nothing等词一起使用.其判别标志是:除去的与保留的是"同类项". except for...是"除了因为……;要不是……;除去……一点外"的意思,表示"对一个人或事物,先做一个整体评价,然后再就局部提出一点看法".即一部分被肯定,另一部分被否定,这就是所谓的"排除否定式".其判别标志是:除去的与保留的"不是同类项". besides相当于as well as,意为"除了……以外还有……",即"除去一部分还有另外一部分"的意思,表示besides 后面的部分包括在整体之内.

except ,besides,except for,but 之间的区别及例句这四个介词或者短语都可以表示“除了…”的意思。但except仅表示“除了…”，排除在外，后面可以接that，what，when等引导的从句；而besides表示“除了…还有…”的意思，表示包含在内；except for表示“除了…”，它引出一个与前面的词相反的原因或者事例；but的意思与except接近，它主要与某些不定代词如nothing，all，anything， no one，anyone等连用。例如： "Except for one old lady, the bus was empty." 公共汽车上要不是坐了一位老太太就是空的。 She can do everything except cook. 除了做饭之外她什么都会。 He had considered everything except the weather. "他什么都想过,唯独没考虑到天气。" I know nothing about it except what I have read in the papers. "除了在报上读到的以外,我对这件事一无所知。" Most of the Chinese people usually go to work on the bike except when it rains."除了雨天,大多数中国人一般都骑自行车上班。" Besides milk and cheese, we need vegetables.除了牛奶和干酪外，我们还需要蔬菜。Besides football, I like playing basketball and table tennis. 除了足球以外，我还喜欢打篮球和乒乓球。 No one but me passed the exam yesterday. 昨天除了我以外没别人考及格。Nobody but Li Ming talked to Lao Wang today. 除了李明，今天没有人跟老王说话。用法习题：1. No one knew Mr Beson"s address _______ his daughter. A. except B. excepts C. only D. besides 2. Do you know any other foreign language ______ English? A. except B. but C. beside D. besides 3. I know nothing about the young lady ________ she is from Beijing. A. except B. except for C. except that D. besides 析:Key:1. A 2. D 3. C一、except的用法--"排除式" except意为"只有……除外;除去……",后跟名词或代词作宾语,强调从整体中除去部分,即except后的部分不包括在整体之内。因此,常和all, everything, no one, nothing等词一起使用。其判别标志是:除去的与保留的是"同类项"。例如: 1. All of them went out for a walk ________ John. A. besides B. except C. beside D. excepts 2. Everyone is here ________ Xiao Wang and me. A. except B. besides C. beside D. excepts 析:Key:1. B 2. A。因除去的与保留的是"同类项",且1、2题中有信息词All、Everyone。 二、except for/that的用法--"排除否定式" except 除后跟名词、代词作宾语外,还可跟介词,也可跟从句。 (1)except for...是"除了因为……;要不是……;除去……一点外"的意思,表示"对一个人或事物,先做一个整体评价,然后再就局部提出一点看法"。即一部分被肯定,另一部分被否定,这就是所谓的"排除否定式"。其判别标志是:除去的与保留的"不是同类项"。例如: 1. It was dark in the city ________ a few weak lights. A. except for B. except C. besides D. but for 2. Your composition is very good ________ a few spelling mistakes. A. except that B. except for C. besides D. beside 析:Key: 1. A 2. B。因为除去的与保留的"不是同类项",故选except for。 (2)except that... 也是"除去……一点外"的意思,但应注意恰当地使用引导词。若从句句意和结构完整,只需用引导词that。例如: 1. The suit fitted him well ________ the colour was a little brighter. A. except for B. except that C. except when D. besides 析:Key:B。本题题意为"除色彩艳了一点儿外,这套衣服很适合他",从句the colour was a little brighter句意和结构完整,只需用引导词that,故选except that。 2. -Can you tell me all about the earthquake? -Sorry,I know nothing about it ________ I read in the newspaper. A. except B. except for C. except what D. except that 析:Key:C。因从句中read为及物动词,且其后无宾语,故选except what。 3. Mr Green usually goes to work by bus ________ it rains. A. besides B. except when C. except what D. beside 析:Key:B。由于it rains为从句,故排除A、D,且rains为不及物动词,不需要宾语,故排除C。except when 意为"除了当……的时候"。 (3)except for与except that有时可互相转换。例如: 1. Your composition is very good except for a few spelling mistakes. =Your composition is very good except that there are a few spelling mistakes. 2. The village is very quiet except for some birds singing in the woods. =The village is very quiet except that there are some birds singing in the woods. 三、besides的用法--"包括式" besides相当于as well as,意为"除了……以外还有……",即"除去一部分还有另外一部分"的意思,表示besides 后面的部分包括在整体之内。例如: 1. Does John know any other foreign language ________ French. A. except B. but C. besides D. beside析:Key:C。由本题中的信息词"any other foreign language",可知选besides。 四、but的用法--"排除式" but是"除了……以外"的意思,相当于except。 (1)but后也可以接名词或代词作宾语。例如: 1. They all went to the park ________ Mike and me. A. besides B. except for C. but D. beside 析:Key: C。因为all是信息词,且they与Mike and me是"同类项",根据句意应选C。 (2)but常与下列词连用:a.否定词no one, none, nothing等; b.疑问词who, what等; c.不定代词all, everyone等。例如: 1. Nothing but disaster would come from such a plan.这个计划只能招灾惹祸,别无益处。 2. Who but Tom would do such a thing?除了汤姆以外还有谁愿意干这种事? (3)but后可接动词不定式。注意:当but前面有实义动词do以及其相应形式作谓语动词时,则其后跟不带"to"的动词不定式,反之加"to"。例如: 1. David could do nothing but ________ his teacher yesterday afternoon. A. help B. helped C. helping D. to help 析:key:A。do nothing but...后应接动词原形,意为"除做……外什么也不做"。 注意:but for是"要不是;没有……"的意思,常用于虚拟语气。例如: But for your help, I would have failed. 要是没有你的帮助, 我早就失败了。 此外：apart from也可表示此意，其用法相当与besides, except for

except,besides,exceptfor用法的关联和区别1.作介词用法时,这三个词都有"除…之外"的含义,但except常与do／does／did／have／has／hadnothing等词形成搭配用法,或者与全部肯定词all、everything、ev?eryone等连用,或者与全部否定词nothing、nobody等连用,因此except加宾语作介词"除…之外"时常表示从整体中剔除一部分；而besides作"除…之外"时则表示"另外附加"的含义,相当于"inadditionto"。试比较下列例句:1)HedidnothingexceptwatchTVyesterday.2)Hesaidnothingexcepttosmilejustnow.3)AllthestudentstookatripexceptTomyesterday.4)Weneed3morepersonstofinishthejobbesides／inadditiontoustwo.2.作介词用法时的except后可接多种情况的介词短语。在这种情况下,except后的介词是不可省去的,except加介词的实际作用就相当于连词加相关的从句。例如:1)Theweatherisfinetodayexceptinthenorthwest.此句相当于:Theweatherisfinetodayexceptthatitisinthenorthwest.2)Hismothernevertakesanyexerciseexceptonthedancefloor.此句相当于:Hismothernevertakesanyexerciseexceptthatshehasadanceonthefloor.需要强调的是except与exceptfor的用法区别:1)Except后排除的内容与主语往往是同一类的,而exceptfor后所排除的内容与主语往往不是同一类的。例如,试比较:Allthebuildingsareexcellentexceptthisone.Allthebuildingsareexcellentexceptfortheirlocation或者Allthebuildingsareexcellentexceptthattheplaceonwhichthebuid?ingsarebuiltisnotgood.2)当except用在句首时往往改用exceptfor。例如:Therewasnosinglepersoninthedarkstreetthatnightexceptapolicemanonhisduty.此句相当于:Exceptforapolicemanonhisduty,therewasnosinglepersoninthedarkstreetthatnight.3.相当于连词用法的except与相当于连词用法的besides的区别仍然保持它们作介词用法的含义。试比较下列例句:1)Tomisagoodstudentex?ceptthatheiscareless.此句相当于:Tomisagoodstudentexceptforhiscarelessness.2)Tomseldomcomeslatetoschoolexceptwhenitrainshard.此句相当于:Tomseldomcomeslatetoschoolexceptonaheavilyrainyday.

我们知道,except,except for和excepting都有"除……外"的意思,但在用法上却有所不同.现将其分述如下： 一、 except用于表示同类事物之间的关系,其意为"除……以外"、"除去". 1.except后面可接名词、代词、动词、副词、介词短语和从句等.如： We have an English lesson every day except Sunday.除星期天外,我们每天有一堂英语课.(接名词) They all went to the park last Sunday except him.除了他以外,上星期天他们都去公园了.(接代词) Every day Mary does nothing except watch TV.每天玛丽除了看电视以外什么都不干.(except后接动词时,一般为带to的动词不定式.但如果except前面有谓语动词do或其相应形式时,后面通常接省略to的动词不定式.如此句.) He always goes to work by bike except recently.除最近外,他一般都骑自行车上班.(接副词) After breakfast the students went nowhere except to school.吃完早餐,学生们除了上学就不到别处去了.(接介词短语) My father usually goes to work by bike except when it rains.除下雨天外,我爸爸通常骑自行车上班.(接从句) 2.except常用在all,whole,any,every,no等词,及anything,anybody,anyone,everything,everybody,everyone等不定代词之后.如： She ate everything on the plate except the carrots.除胡萝卜外她把盘子里的东西都吃了. I"ve cleaned all the rooms except the toilet.除了厕所,我清扫了所有房间. 二、 except for用于表示对主要部分的肯定和对局部的否定.它不表示同类事物之间的关系,其意思为： 1."除了……以外".如： Smith is a good man,except for his bad temper.史密斯除了脾气不好外,是个好人. The movie was good except for the ending.这部电影除了结尾之外都很好. 2."除去为了……".如： Mother wouldn"t give him any money except for books and stationery.除了买书和文具外,妈妈不给他任何钱. 3."如果不是","若非".如： Except for you,I would pass the exam.如果不是你,我就会通过考试. 4."except for+名词"结构一般可以改写成"except+that从句".如： This will do except for the length.= This will do except that it is too long.如果不是它太长的话,这会很好. All are here except for the absence of Tina.= All are here except that Tina is absent.除了蒂娜以外,大家都在这里. 三、 except与except for的互换 1.except与except for有时可以通用,不过,一般情况下,except for可置于句首,而except则不能.如： Everyone is here except Tom.(或：Except for Tom everyone is here.)除汤姆外,大家都到了. 2.except与except for在句中也可互换. 一般来说,否定句中用except,肯定句式可以用except for来替换.如： This article has no blunders except a few mistakes.这篇文章除了一点小错外没有大错. 此句可改为：This article is instructive except for a few blunders.这篇文章除了有些错误外,是有教育意义的. 不过,在前后有相称的同类词语时,应用except,否则用except for.如： We come to school every day except Sunday.除星期天外,我们天天上学.(句中every day与Sunday同类) This dress is ready except for the buttons.衣服做好了,只是钮扣未缝上.(句中ready与buttons不同类) 四、 excepting是由动词转化而来的分词介词,用法较正式,含有较强的动态意味,意为"把……除外",与except在用法上有不同之处： 1.可用于句首,或用于not,without,always等词后； 2.其后常常用名词或代词.如： Bruce answered all the questions excepting the last one.除了最后一个问题外,布鲁斯都答出来了. Excepting Sundays,the library is open daily.除了星期天外,图书馆天天开放. I think we must keep improving our English not excepting those who have mastered it.我认为我们必须不断提高我们的英语水平,对那些已掌握了英语的人也不例外. All the people in my family go to work every day,always excepting my youngest sister.我家所有的人每天都上班,除了我那个最小的妹妹以外.

Except含有“除…之外”或“除了”的意思时，通常用作介词而不是连词。人称代词用于except之后时通常用宾格：Nooneexceptmeknewit.除我之外没人知道它；Everymemberoftheoriginalcastwassignedexcepther.除她之外的原班演员都是签约雇佣的except表示除了，最普遍Excepthim,weareallhere.除了他我们都来了exceptfor表示除了以外，还有也是如Exceptforhim,Iamalsoastudent.除了他，我也是学生（两个都是）exceptforadv.除...以外besides用做除了以外=exceptfor如：Whathashedone,besidesreadingthepaper?除了看报,他还做了什么?不过这个词更常见是用做副词如：Besides,Iwantyoutopromisemeonething.此外,我要你答应我一件事。but说起来比较口语话，没except正式，意思同exceptNobodyisherebutme.除了我没人在这。exceptthat后跟从句

一：except 用于表示同类事物之间的关系，其意为"除……以外"、"除去"。except后面可接名词、代词、动词、副词、介词短语和从句等 2. except常用在all, whole, any, every, no等词，及anything, anybody, anyone, everything, everybody, everyone等不定代词之后二：except for用于表示对主要部分的肯定和对局部的否定。它不表示同类事物之间的关系，"除了……以外" 2. "除去为了……" 3. "如果不是"，"若非" 4."except for+名词"结构一般可以改写成"except+that从句"

besides意:除...外()附加含义与inadditionto同义except意:除...外(没)排除含义exceptfor意:除...外其都...用评价事物美足but意:除语气强烈:SheknowstwootherforiegnlanguagesbesidesEnglish除英语外知道两种其外语HegoestoschooleverydayexceptSunday除周每都校Yourcompositionisgoodexceptforafewspellingmistakes作品除些拼写错误外都IreallywanttotellyouthetruthbutIcan"t我真想告诉事实我能

implication for意思：对 ... 的牵连；对 ... 影响；

implication for对 ... 的牵连

respect for sb是向某人通过行动表达respectrespect to sb是对某人心存respect，但不一定通过行动表达了 to 后面跟人.事物.或事件for 后面跟 尊敬的原因.希望能够帮到你~~~~~~~~

hold important implications for对....有着重要的影响.-----------------------------------为你解答，如有帮助请采纳，如对本题有疑问可追问，Good luck!

have implication for有.....的意义更多例句筛选1.These findings have important implication for guiding spray ofPhenylamide Fungicide for control of potato late blight inHeilonggiang.本研究对在黑龙江省科学合理地使用苯基酰胺类杀菌剂防治马铃薯晚疫病具有重要意义。2.so the implication for this one is that if she had realized you wouldn"thave gotten scratched.所以这个意味着，如果她意识到了，你就不会被挠。

歌曲名:Looking For Paradise歌手:Anita Skorgan专辑:BasicAlejandro Sanz(ft.Alicia Keys) - Looking for ParadiseEverybody Sayoh oh oh oh ... na na na...oh ohnananana oh oh ohDriving in a fast cartrying to get somewhereDon t Know Where i m goingBut i Gotta Get ThereA veces me siento perdidoinquieto,solo y confundidoentonces me ato a las estrellasy al mundo enterole doy vueltasIm singing for somebody like you sorta like me babyYo canto paraalguien como túpon la orejanenaoh oh oh oh na na na....ohEstoy buscando ese momentola música quecuando llegaMe llena con su sentimientocon su sentimientoVida llenaWalking downthe sidewaylooking for innocenceTrying to find my wayTrying to make some senseYo canto para alguien como túsolo como túBabyIm singing for somebody like you youwhat about youI m singing for someone someone like youTú, dime a quién le cantas‘Cause there"s something about you thereSpeaks to my heartSpeaks to my soulI"m singing for someoneSorta like youYo canto para alguienSomeone like you, someone like meSólo como tú, oh, my sisterTodo el mundo va buscando ese lugarLooking for paradiseOh oh oh oh… na na na ....A ese corazón heridoLa música le da sentidoTe damos con la voz tus alasLe damos a tus pies caminoOh is anybody out thereFeel like i feelTrying to find a better waySo we can healI"m singing for somebody like youSorta like me babySólo como túWhat about you?Yo canto para tiSpeaks to my heart(Speaks to my heart)I"m singingOh oh oh oh… na na na.... oh oh oh...ShaGuar & MoyileShaGuar @ LK 歌词组http://music.baidu.com/song/2795193

"Respect for"和"Respect to"都表示"尊重"的意思，但它们的使用场合有所不同。一般来说，"Respect for"通常用于指对某个人或物的尊重，而"Respect to"则通常引用某个方向或对象的尊重。下面是一些使用"Respect for"和"Respect to"的例句：- "I have great respect for my elderly neighbor."（我非常尊重我的老邻居。）- "She has no respect for authority."（她不尊重权威。）- "The students showed respect to the guest speaker."（学生们对嘉宾演讲者表示了尊重。）- "We must show respect to the environment."（我们必须尊重自然环境。）总的来说，"Respect for" 表示对某人或某物自身的尊重，而"Respect to" 表示对某方向或某对象的尊重。不过，在某些情况下，两者可以通用，具体使用要根据语境和情景来决定。

嗯 如果你一定要弄清楚这些细节你可以这么想把be理解为“是” 把response理解为它的名词意思 for和to就是介词嘛 简单的理解为“为了”和“对于”什么的总的来说 就是 “是……的回应” “作为……的负责的那个”啊英语 特别是短语和句子什么的也不能翻译的太死是吧 不可能都是每个词的意思都按原顺序和意思来翻译嘛就相当于 be a man to the word 这里的a man也是名词不是吗？

.:.Ti:The Frozen World.:..:.Ar:Emilie Simon.:..:.Al:La Marche De L"empereur.:..:.Zenlight.:.onlybeloved.com.:.Won"t you open for meThe door to your ice worldTo your white desertI just want to stareOut over these snowfieldsUntil we are one againWe belong to the frozen worldWhen the ice begins to thawBecomes the seaOh, You will seeHow beautiful we can beWhen the ice begins to thawBecomes the seaOh, You will seeHow beautiful we can beEverything is calmAt the end of the planetIn our white desertThe sun kissed the iceIt glisten for meAnd we are one againWe belong to the frozen worldWhen the ice begins to thawBecomes the seaOh, You will seeHow beautiful we can beWhen the ice begins to thawBecomes the seaEnd 中文*****你不为我开门 通往你冰冷世界的门通往你白色世界的门我只想凝视 在这片雪原的外面直到我们再次是孤单一个人我们属於 这片冰冷的世界当冰雪 开始消融 汇成海洋你会看见 我们是如此的美丽你会看见 我们是如此的美丽一切都是冰冷的 在千原的尽头在我们白色的世界里太阳亲吻著冰雪他向我闪著光我们又是孤独的一个我们属於冰冷的世界当冰雪 开始消融 汇成海洋你会看见 我们是如此的美丽

这是《简·爱》原句，我也就引用吴均燮先生的翻译，如下："我一路都在反抗，这是我从来没有过的；可这以来就大大加重了蓓茜和阿博特小姐对我的恶感，超过了她们本来愿意抱有的。"望采纳。

就是other than / except和except for不可以混用.exceptfor是同一类的排除,而other than / except不是同一类.举个例子：It‘s always fine this week except for Thursday（除了礼拜四其他几天天气都很好,用except for）Britain in quite good except/other than weather(英国什么都很好,就是天气不好,用except或者other than)

选D，otherthan：固定用法，用于否定句中。意思是除了……，除……之外。exceptfor是除此之外，什么都在例如：Everyoneishere,exceptforLily.除了莉莉，大家都在。Everyoneisn"there,otherthanLily.除了莉莉，大家都不在。

const {getFieldDecorator} = this.props.form;<Input placeholder="Please input your account" {...getFieldDecorator("r_userName")}/>将Input的值传入this.props.form的r_userName字段中。

Environmental problems are becoming more and more serious all over the world. For example, cars have made the air unhealthy for people to breathe and poisonous gas is given off by factories. Trees on the hills have been cut down and waste water is being poured continuously into rivers.Furthermore, wherever we go today, we can find rubbish carelessly disposed. Pollution is, in fact, threatening our existence. The earth is our home and we have the duty to take care of it for ourselves and for our later generations. Fortunately, more and more people have realized these problems. Measures have been taken to cope with these problems by the government. Laws have been passed to stop pollution. I hope the problem will be solved in the near future and our home will become better and better ！

from在这里表示远近，……is about X from …… home 故选B。

介词用途很广。基本用法:for为什么，对于什么。Forthisreason,Iquit.因为这个原因，我辞职了。Thisisforyou。这是给你的。with和什么在一起，用什么工具、手段等。比如:I"llgowithyou.我和你一起去。Iwrotealetterwithapen我用钢笔写了一封信。to表示指向，比如去哪里:goto(home,hospital)

result of 是由于。。。。原因result for 导致。。。结果

1,result from 由于；由…造成；因…而产生： 例句: Her blindness of both eyes resulted from a traffic accident. 她的双目失明是由于一次交通事故造成的。 2,the result for 的意思是the results for "watch tv" are interesting意思是" "看电视"这一项的结果十分有趣. " 区别应该是其中包含了一种由somebody主动去做something而导致了这个result的意味,强调了这个result是watch tv而引发的 3,the result of 的意思是在文中的意思是"...的结果是..." here are the results of the student activity survey意思是"一项学生活动调查的结果如下." （词义：干了什么之后的结果)采纳哦

运用委托，把你的点击事件写一个方法

我怎么听着像WCG的主题曲 Beyond the game。。。 呼~歌词不一样。

一.give to 赋予例句right to give away 放弃权 To give flavor to. 给…加调料 To give publicity to. 使…为公众所注意 Give heart to sb. 鼓励某人 Give horns to sb. 叫某人戴绿帽子 二.give for 牺牲;交换例句Give a back for sb. 弯着腰让某人从自己背上跳过[攀登] Give sb. credit for sth. 为。。。赞扬[肯定]某人 give someone credit for something. 因为某事而信任某人。 As for me, give me liberty, or give me death. 至于我，不自由，毋宁死。 give dinner to; host for dinner. 提供晚饭；请吃晚饭。三.take to 1. 喜欢, 习惯于…2. 开始从事3. 觉得(某事)容易学例句To take into account 考虑到，把......考虑进去 To take revenge on. 进行报复… To take a measurement. （测）量 To take a potshot. 乱击，乱射进行近距离狙击 To take an overdose. 用药过量

歌曲名:Theme For A Dream (梦里喜相逢)歌手:潘迪华专辑:钻石名曲选You are my theme for a dreamYes you are, a rare and lovely theme (You"re a theme for a dream)The dreams I dream day and nightThat your arms are holding me so tight (You"re a theme for a dream)every time I kiss you (kiss you)Music fills with starlight (starlight)Every time I touch you ( when I touch you)Each and every time a chime rings out I love youOnly you for ever more"Cause you"re my theme for a dreamYes you are a rare and lovely theme (You"re my theme for a dream)So, angel please say that you love me tooAnd make my dreams come true dream (you"re my theme for a dream)When I dream I kiss you (kiss you)Music fills with starlight (starlight)Every time I touch you ( when I touch you)Each and every time a chime rings out I love youOnly you for ever more"Cause you"re my theme for a dreamYes you are a rare and lovely theme (You"re my theme for a dream)So, angel please say that you love me tooAnd make my dreams come true dreamAnd make my dreams come truePlease make my dreams come true.http://music.baidu.com/song/7339928

A SONG FOR YOU(Written by Leon Russell)I"ve been so many places in my life and time一生中去过如此多的地方I"ve sung a lot of songs, I"ve made some bad rhyme已经唱过许多歌，做过很多拙文I"ve acted out my life in stages with ten thousand people watching面对成千上万的观众抒发过自己心中的情怀But we"re alone now and I"m singin" this song for you但是现在就我们两个人，我想特别唱这首歌给你一个人听I know your image of me is what I hope to be, baby我知道你对我的期望，并且我也希望那样去做I"ve treated you unkindly but girl can"t you see平日，我对你有点漠然，但是亲爱的你要知道There"s no one more important to me你对我来说不仅仅意味着重要So darling can"t you please see through me亲爱的，请你看看真正的我"Cause we"re alone now and I"m singin" my song for you因为现在就我们两个，这首歌我只为你而唱You taught me precious secrets of the truth, withholdin" nothin"你让我领悟到真爱的宝贵之处在于毫无隐瞒You came out in front and I was hiding你过去出现在面前而我却在逃避But now I"m so much better so if my words don"t come together但现在我明白了一切，如果我有点词不达意Listen to the melody cause my love"s in there hiding那么就倾听我这段包含情意的旋律吧I love you in a place where there"s no space or time我对你的爱超越时空I love you for my life, "cause you"re a friend of mine我爱你，你是我一生的挚友And when my life is over, remember when we were together记住，我们注定在一起We were alone and I was singin" my song for you现在就我们两个人，让我为你演唱这首歌

before (在…前) ，既是介词又是连词。在你提供的句子里，由于它的后面是一句完整的话，有主语: I, 谓语: take, 宾语:a shower,所以说它是连词。本句汉义: 在我冲澡之前，...如果后面不是一句话，那么它就是介词，如: We must get everything ready before class.(课前我们必须做好一切准备。)

可以。before可以表示方位，意思和infrontof相近。表示在??前面，与behind互为反义词。before还有多种用法，用作副词时，意思是“以前”，表示从较近的过去至较远的过去。用作时间状语泛指以前、不与具体时间连用时，谓语动词可以用一般过去时，也可用现在完成时，前者只表示“过去发生过”，后者则强调“对现在有影响”。

before可用于表示时间。首先，可以表示“先于，在…以前”，其后可以跟表示具体日期、时间等的名词或数词，也可以跟表示时间或动作的名词。其次，可以表示“在做…之前”，后接 v -ing。再次，可以表示“紧接在…之前”。 扩展资料 　　before用于否定句还可表示“直到…为止”。注before之后只能接表示时间点的名词，而不能接表示时间段的`名词。 　　before可用于表示动态或静态的位置，意思是“在…之前”，与behind相对。 　　before可用于表示顺序或排列上的“在…之前”或“居于…之前”，与after相对。引申可用于表示比较，即在等级、价值、重要性、能力等方面的“在先”“优于”“重于”。再引申则可用于表示对某事物的优先选择，即“宁可”或“与其…宁可”。 　　after可用作连词连接一个时间状语从句,从句中一般用现在时表示将来。 　　after用作副词时常与soon, ever搭配,通常用于表示时间的名词后。 　　after用作副词时不用于比较等级。 　　after和in的使用：从某时说到多少时间以后，不用after，而用in。如果指“某个时刻，日期或事件以后”，用after。

before的全部时态用法，整理如下：Before作为单个副词，也就是说，当单独使用时，经常用于现在完成时，也可以用于过去时。Before时态连词“before”表示主句和从句的动作顺序。过去完成时可以用在主句或从句中，意思相同。例如: Before he entered the institute,he had served in the army.在他进入研究所之前，他曾在军队服役。如果before子句使用简单过去时，主子句可以使用简单过去时或过去完成时，具有相同的含义。例如：The concert had started before we got to the hall.在我们到达大厅之前，音乐会已经开始了。一、用作介词，注意以下用法：1、表示时间，意为“在…以前”，其后只能接点时间或具有点时间意义的其他名词，而不能接一段时间。如：I"ll be back before fiveo"clock。我5点前回来。2、表示在两者中选择其一，意为“宁可…而不愿…”。如：They would die before surrendering. 他们宁死而决不投降。二、用作前置时间连词的状语从句除了表达“before …”的基本意思外，还有以下用法值得注意:1、表示“宁可。也不愿”。如They would die before surrendering.他们宁死不屈。2、表示"不到…就”"还没有…就”。如：Before the week was out,they were dead.那个星期还没过完他们就死了。

改编自原著《董生》、《褚生》篇。

实际上，只要我们把握住两者使用时本身的含义及主句动词是终止性的，还是延续性的，肯定式，还是否定式两大点，就能容易地解决这类问题。现详细阐明如下： 一、在下列情况下，两者可互换用，但含义略有不同。before表示“在……之前”的意思，强 调时间先后关系；而until表示“直到……才”的意思，主句是肯定句则表示主句动作的终 止时间；主句是否定句则强调主句动作的起始时间。 1.主句为否定式终止性谓语动词。常见的动词是open,start,leave,arrive,finish, stop等。例如： (1)The noise of the street didn"t stop until/before it was midnight. (2)The children won"t come back until/before it is dark. (3)I didn"t leave the lovely boy until/before his mother came home. 2.主句为肯定式、延续性谓语词，这类动词用stand,stay,talk,be,wait等。例如： (1)He lived with his parents until/before he graduated from school. (2)I will wait until/before he comes to my help. (3)I shall stay heer until/before you come back. 二、在下列情况下，用before不用until。 1.主句这肯定式、终止性谓语动词，只用before。例： (1)He fell asleep before I could take off his clothes. (2)We arrived there before it atarted to rain. (3)The holiday came to the end befor I knew it. (4)He almost knocked me down before he saw me. 2.主句谓语动词强调动词的迟缓性，只用before，常伴有时间段状语或时间段暗示。例： (1)It was quite some time before he found the elephant at all. (2)We had walked a long way before we found some water. (3)We had sailed for two days before we saw the land. (4)The fire lasted about four hours before the firefighters could countrol it. (5)It was midnight before my brother came home. (6)It was three months before they met again. 3.如果强调从句谓语动作未发生，就发生主句谓语动作，只用before。常译为“未及”，“不”或“不等……就”。例： (1)We can leave early in the morning before it gets too hot. (2)I must write it down before I forget it. (3)We do want to buy something now before prices go up. 4.表“与其说……倒不如”，“与其……毋宁……”只用before。例： (1)I would give up my job before I"d agree to be dismissed. (2)He will die of hunger before he will steal. 5.在某些特定句型中用before。例如： (1)It was not long before the whole country rose up. (2)It will probably not be long before they understand each other. 三、下列情况一般区别用until。 1.主句是持续性谓语动词时，肯定、否定都可以，但意义完全不同。肯定表动作终止，而否定表动作开始。例如： (1)We discussed the problem until/before he came back.我们一直讨论到他回 来。 (2)We didn"t discuss the problem until he came back.我们一直等到他回来后才讨论问题。 2.not…until句型尽管在某些情况下可与before互换用，但在强调句中一般仍用until。 例如： (1)It was not until he told me that I knew it. (2)It was not until he finished his homework that he went home.

before在句首和句中一样,没有特别的规则. before的两个主要用法：1.介词,后跟名词或者动名词,即doing的形式.2.连词,后跟时间状语从句,表示先后关系.

http://dictionary.cambridge.org/results.asp?searchword=before&x=49&y=4楼主去剑桥字典网去看看吧，绝对权威~！http://dictionary.cambridge.org/

before+一段时间 描述主干句子行为发生时间,用法与实际例子结合；跟的是表示时间界限举例：You should put an end to your task before 4 clock.We must accomplish the program before June.一段时间+before 是常用用于句首或句尾的时间状语；跟的确切的表示时间量的词,用于过去式Ten years boefre,I lived in the small village,so I harboured much passion for it.

before 在……之前after 在……之后

before可用于表示时间。首先，可以表示“先于，在…以前”，其后可以跟表示具体日期、时间等的名词或数词，也可以跟表示时间或动作的名词。其次，可以表示“在做…之前”，后接 v -ing。再次，可以表示“紧接在…之前”。 扩展资料 　　一、before的用法： 　　before可用于表示时间。首先，可以表示“先于，在…以前”，其后可以跟表示具体日期、时间等的名词或数词，也可以跟表示时间或动作的名词。其次，可以表示“在做…之前”，后接 v -ing。再次，可以表示“紧接在…之前”。 　　before用于否定句还可表示“直到…为止”。注before之后只能接表示时间点的名词，而不能接表示时间段的名词。 　　before可用于表示动态或静态的位置，意思是“在…之前”，与behind相对。 　　before可用于表示顺序或排列上的.“在…之前”或“居于…之前”，与after相对。引申可用于表示比较，即在等级、价值、重要性、能力等方面的“在先”“优于”“重于”。再引申则可用于表示对某事物的优先选择，即“宁可”或“与其…宁可”。 　　二、after的用法： 　　after可用作连词连接一个时间状语从句,从句中一般用现在时表示将来。 　　after用作副词时常与soon, ever搭配,通常用于表示时间的名词后。 　　after用作副词时不用于比较等级。 　　after和in的使用：从某时说到多少时间以后，不用after，而用in。如果指“某个时刻，日期或事件以后”，用after。

歌曲名:Theme For A Dream歌手:Cliff Richard & The Shadows专辑:40 Golden GreatsYou are my theme for a dreamYes you are, a rare and lovely theme (You"re a theme for a dream)The dreams I dream day and nightThat your arms are holding me so tight (You"re a theme for a dream)every time I kiss you (kiss you)Music fills with starlight (starlight)Every time I touch you ( when I touch you)Each and every time a chime rings out I love youOnly you for ever more"Cause you"re my theme for a dreamYes you are a rare and lovely theme (You"re my theme for a dream)So, angel please say that you love me tooAnd make my dreams come true dream (you"re my theme for a dream)When I dream I kiss you (kiss you)Music fills with starlight (starlight)Every time I touch you ( when I touch you)Each and every time a chime rings out I love youOnly you for ever more"Cause you"re my theme for a dreamYes you are a rare and lovely theme (You"re my theme for a dream)So, angel please say that you love me tooAnd make my dreams come true dreamAnd make my dreams come truePlease make my dreams come true.http://music.baidu.com/song/3467674

Before 在英语中是一个比较常用的虚词，它既可作介词或副词用，也可作从属连词用。在近几年的高考试题中常常出现考查其从属连词用法的题目。下面就把其作为从属连词的用法归纳如下：1. 表示“在…..之前就…..”。 Mary had finished her homework before her mother returned.2. 表示“过了多久后才…….. ，动作进行到什么程度才……” The man almost knocked me down before he saw me . They walked about 30 miles to the west before they saw a village . They worked day and night about three days before everything returned to normal .3. 表示“来不及； 尚未…..就…” Before I could get in a word , he had measured me . He ran off before I could stop him . She left the company before I could have a word with her .4. 表示“刚…就…” I had hardly sat down before the bell rang.5. 表示“不知不觉就…..； 还没弄清就……” Time passed quickly and three months went by before Aqiao knew it.6. 表示“宁愿…，决不…，与其…，毋宁….”常与will 或would 连用。 I would die before I would tell I"d shoot myself before I apologized to him. I would / will die before I surrender .7. 表示“否则；以免” Do it now before you forget . I will write it down before I forget it .8. 用于句型“it was +时间段+ before …” 表示 “过了多久才…” It was three days before he came back. .9. 用于句型 “ it was not long +时间段+ before …” 意为“不久就….” It was not long before he sensed the danger of the position .10. 用于句型“it will be(not )+时间段+ before….”表示“要过多久/ 不久…才…” It will be half a year before you graduate from this school . It will be not long before you find you are wrong .

before是介词，后接动名词形式。

歌曲名:A Feast For Me歌手:Elisa专辑:Pipes & FlowersElisa / A Feast For MeMPI- Bobby.chiang - Trip in Italy(2007.10)Well there"s a party for meThe last thing I wanted from youI close the door behind meAnd there you areYou seem relaxed and quietBut under your shirt you sweatAnd these balloons aroundMake me feel so sadWell there"s a feast for meBut it"s a night so paleFeels like an empty roomWhere we could kill with wordsYou wish you could make believeThat I"m what you want me to beBut these balloons aroundMake me feel so sadI"m in your sweet sweet sweet embraceAnd you"re a thousand miles awayYour arms a sweet sweet sweet embraceAnd you"re a thousand miles awayWell there"s a party for meAnd you know that I didn"t ask for itI just stay in your gameI"m just playing your gameSo won"t you tell me what to doI can pretend that you tell the truthWon"t you tell me what to doI can pretend you tell the truthI"m in your sweet sweet sweet embraceAnd you"re a thousand miles awayYour arms a sweet sweet sweet embraceAnd you"re a thousand miles awayWhy why why whyShould I take the blameWhere"s my big mistakeShould I feel happyFor what I haven"t doneShould I take the blameShould I feel the painShould I feel regretFor what I haven"t doneWhy why why whyWas this a feast for meOr just a bad surpriseShould I have expected thisI just don"t wanna knowAnd you"ve made up the rulesSo that you"ll win this gameBut you can"t tell me what to doCause I don"t believe in youWhat"s left a sweet sweet sweet embraceAnd you"re a thousand miles awayYour arms a sweet sweet sweet embraceAnd you"re a thousand miles awayWhy whyI never ask youwhy whyMPI- Bobby.chiang - Trip in Italy(2007.10)http://music.baidu.com/song/8183988

是的

一、你知道before有几种含义吗？ adv. 先前，从前；在前 It"s hurting worse than before. 比先前痛得更厉害了。 conj. 1.在…之前；在…以前 B es before C in the alphabet. B在字母表里排在C之前。 prep. 1.在…之前 The turn is about o kilometres before the roundabout. 拐弯就在环岛前面约2公里处。 2.优于，先于 The development of the economy es before everything else. 发展经济优于一切。 3.当面 He made a statement before the House of Commons. 他在下议院当众发表了一个声明。 二、词义辨析：before一词的同义词还有哪些呢？ before in front of in the front of 这些前置词(短语)均含有“在……前”之意。 before指空间位置或时间的“在……前”。表时间时，反义词为after；指空间位置时，其反义词是behind。 in front of指在某地方之外的前面，即不在其中，多与静态动词连用，通常可与before通用。 in the front of指在某地方之内的前面，即在其中的前部分。 三、含有before的常见短语 before long 1.不久 e before v. 先于，在 ... 之上，交由 ... 处理 accessory before the fact 【法】 事前从犯 equality before the law 【法】 在法律面前平等 四，学会before的用法了吗？来做个测试吧！

正确,before也常用于过去式中,而最重要的一点就是:在before引导的副词子句中,用现在式表示将来.例:Shutthewindowbeforeyouleave.你离开前关上窗.Onlytwodaysremainedbeforetheexamination.考前只剩下两天了.IhavemetMarybefore.我以前见过玛丽.Idon"tthinkwe"vemetbefore.我想我们以前没有见过.

since是时间点之后发生的事，before是时间点之前发生的。

before 可以和过去完成时连接. 下面是具体的内容.你可以从中找到答案. 一. 过去完成时主要有以下几点用法： 1. 表示过去某一时间或动作之前已经发生或完成的动作或存在的状态.句中常用by, before, when, until等词引导的时间状语.它是以过去某一时间为起点,所以过去完成时是一个相对的时态,表示的是“过去的过去”.只有和过去某时间或某动作相比较时才能用到它.例如： Most of the guests had left when he arrived at the party. 当他到达晚会时,他发现大多数客人已经离开了. 2.过去完成时还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或持续下去,常与for, since等词连用.例如： When Jack arrived, he learned Mary had been away for almost an hour. 当杰克到时,他得知玛丽已经离开快一个小时了. 3. 用于并列句：一个并列句用的是过去式,如果另一个并列句表示的动作早于过去式这一动作,这时需用过去完成时.例如： Tom flew home, but his father had already died.汤姆乘飞机回家,他的父亲却已经去世了. 4. 某些动词的过去完成时表示过去未实现的希望、计划或打算.常用的动词有hope, expect, suppose, think, want, wish等.例如： They had hoped to be able to arrive before ten. 他们本来打算能在10点之前到达. 5. 在before, after, as soon as等引导的从句中,由于这些连词本身已经表示出时间先后,所以可以用过去时来代替过去完成时.例如： 二. 一般过去时和过去完成时用法有哪些不同? 1. 在主从复合句中的用法不同 （1） 用在宾语从句中 在主句谓语为一般过去时的宾语从句中,既可用一般过去时,也可用过去完成时.但两种时态的意义明显不同.试比较下列两组句子： She said she was a doctor. 她说她是位医生.（说话时仍为医生） She said she had been a doctor.她说她曾当过医生.（说话时已不是） She said she had been a doctor for twenty years.她说她当过20年的医生.（主要强调说话时已当过20年医生,此状态可能已经结束,也可能还没有） 但是,如果从句中有表示具体时间的状语,则常用一般过去时.例如： He said he was born in 1986. 他说他是 1986年出生的. （2） 用在含有after的主从复合句中 在含有after的主从复合句中,一般在从句中使用过去完成时,主句中使用一般过去时.例如： After he had done his homework, he went out to play football. 因连词after本身能明确表示时间的先后关系,因而多数的主句和从句均使用一般过去时.例如： After he arrived in England, Marx worked hard to improve his English. （3） 用在含有before的主从复合句中 用在含有before的主从复合句中,一般在从句中使用一般过去时,主句中使用过去完成时.例如： Lily had written some letters before she went out shopping. 有时,也可以在从句中用过去完成时,主句中用一般过去时,这样就可使描述更为生动.试比较： We got to the station before the train had left. 火车尚未开动之前,我们就到了车站. We had got to the station before the train left. 火车开出之前,我们就已经到了车站. 像after一样, before本身就能明确地表示时间的先后关系,故多数主从句均使用一般过去时,而无需使用过去完成时.例如： Many people left for home before the film ended.电影尚未放完,许多人就起身回家了. （4） 用在含有when的主从复合句中 由于when本身不能明确表示时间的先后关系,故先发生的动作应用过去完成时,后发生的动作只需用一般过去时.这样用过去完成时的可能是主句,也可能是从句.例如： When all his money had been used up, Peter had to turn to a friend for help. 当他的钱全都用光时,彼得只好转而求助于一个朋友. 有时,主句和从句的谓语动词的先后关系十分明确,两个动作紧接着发生,前一动作导致后一动作,这时两者均用一般过去时即可.例如： When the meeting was over, we left the hall. 散会后,我们就离开了大厅. 2. 叙述几个连续的动作用法不同 在叙述两个或两个以上接连发生的动作用and, but, so或then等连接并按时间发生的先后顺序叙述时,只需用一般过去时.例如： She entered the room, turned on the light and found everything stolen. I lost my pen but soon found it. She lost her pen, so I lent her mine. 但是,如果两个先后发生的动作不是按时间的顺序排列或叙述时,为明确动作发生的先后顺序,先发生的动作就得用过去完成时.例如： The farmers were in high spirits because they had got another good harvest. 农民们兴高采烈,因为他们又获得了一次好收成. 3. 表示与过去还是现在相反的情况不同 一些表示心理活动的动词,如think, know, expect, mean, hope, want, suppose等,用一般过去时可表示存在于过去而非现在的心理活动或事与愿违的情况.例如： I didn"t know you were here. 我不知道你在这儿. 而这些词的过去完成时则表示的是过去未曾实现的愿望、打算、想法或意图等.例如： We had hoped that you would be able to visit us. 我们原本希望你去看我们.

一、before的用法：　　before可用于表示时间。首先，可以表示“先于，在…以前”，其后可以跟表示具体日期、时间等的名词或数词，也可以跟表示时间或动作的名词。其次，可以表示“在做…之前”，后接v-ing。再次，可以表示“紧接在…之前”。　　before用于否定句还可表示“直到…为止”。注before之后只能接表示时间点的名词，而不能接表示时间段的名词。　　before可用于表示动态或静态的位置，意思是“在…之前”，与behind相对。二、after的用法：　　after可用作连词连接一个时间状语从句,从句中一般用现在时表示将来。　　after用作副词时常与soon,ever搭配,通常用于表示时间的名词后。　　after用作副词时不用于比较等级。　　after和in的使用：从某时说到多少时间以后，不用after，而用in。如果指“某个时刻，日期或事件以后”，用after。

before四种常见句型如下：(1) It will be+时间+ before 表示“还有多长时间”.或“要过多久才”。Before 后面的句子用一般现在时。eg: It will be 4 years before he graduates他还有四年时间就毕业了。(2) It was+一段时间+ before 表示“过了多久才”。其否定形式 It wasn"t＋一段时间＋before 表示“不久就…”或“没过多长时间就”。Before 后的句子用一般过去时。It was some time before we realized the truth.过了一段时间，我们才知道真相。It wasn＇t two years before he left the country.还没到两年他们离开了那国家。(3) before sb can/ could.某人还没来得及。Before I could say, he rushed out. 在我还没来得及说话前，他就冲出去了。(4) It took/will take + 时间段+before… 要花费/将要花……(多长时间)才……It will take one year before we meet again.我们要过一年才会再见。

一、 before用作连词 1． before用作连词时，意思是“在……之前；还没来得及 …… 就”。例如： Before she could move, she heard a great noise, which grew to a terrible roar. 她还没来得及动弹，就听见有很响的声音，接着就成了可怕的隆隆轰鸣声。 Before I could say a word, she had stormed out of the room. 不等我说一句话，她就冲出了房间。 Don"t count your chickens before they are hatched. 不要高兴得过早。 2． 用于It + be + 时间段 + before...句型中，意思是“在……之后才……”。例如： It will be five years before I come back. 我五年后才能回来。 It was not long before the enemy was driven out of their country. 不久之后，敌人就被赶走了。 如果主句中用否定式，则表示“不多久……就”。 It won"t be long before they understand each other. 他们不久就会互相了解的。 3． 还有“趁……（还没有）”之意。例如： They are thinking of buying the house before the prices go up. 他们正在考虑趁房价未涨时把房子买下来。 Do it before you forget it. 趁早动手，以免忘了。 二、before用作介词 before用作介词时, 可以指时间“earlier than在……之前”，也可以指位置“in front of在……之前”。例如： There is nothing that has not been bitter before being ripe. 凡事在成熟前，都是有苦味的。 Don"t put the cart before the horse. 不要本末倒置。 He was brought before the judge. 他被带到法官面前。 三、before用作副词 before用作副词时，意思是“at an earlier time / in the past以前”。例如： I"ve seen the film Titanic before. 我以前看过《泰坦尼克》这部电影。 I have never seen such beautiful flowers before. 我以前从未见过如此美丽的鲜花。 四、短语before long与long before的区别 before long是“很快，不久”的意思, 可以用于各种时态。例如： Before long, he went to America. 不久，他就去了美国。 I hope to see you before long. 我希望不久后再见到你。 而 long before是“很久以前”的意思，一般用在过去时或过去完成时的句子里。例如： She said she had read the novel long before. 她说她很久以前就读过这部小说。 That happened long before. 那件事发生在很久以前

before用作副词表示以前，以往，之前；用作介词时表示在...以前，在...前面；用作连词时表示在...以前； before用作副词时,意思是“以前,在前面”,表示从较近的过去至较远的过去。用作时间状语泛指以前、不与具体时间连用时，谓语动词可以用一般过去时。 扩展资料 　　before与具体时间连用时,一般置于其后，谓语动词通常用过去完成时。 　　before也可表示空间或位置的“在前，在前面”，还可表示运动“到前面”。 　　I (have) read the book before. 　　我以前读过这本书。 　　It came across my mind that I had met him somewhere before. 　　我突然意识到我曾在什么地方见过他。 　　before用作连词 　　1.before主要引导时间状语从句，意为“先于”“…之后才”“(不多久)就…”。当主句是将来时时，从句谓语动词须用现在时；当主句是一般过去时或过去完成时时，从句常用过去时。before引导的时间状语从句不能用于否定式。 　　2.before还可用于barely〔scarcely〕...before结构，意为“刚…就…”。 　　3.before还可引导让步状语从句，意思是“宁愿…也不…”。 　　It will be some time before we know the full results. 　　还要过一些时间我们才能知道全部结果。 　　It will be eight years before we meet. 　　八年以后我们才能相见。 　　before用作介词 　　1.before可用于表示时间。首先，可以表示“先于，在…以前”，其后可以跟表示具体日期、时间等的名词或数词，也可以跟表示时间或动作的"名词。其次，可以表示“在做…之前”，后接 v -ing。再次，可以表示“紧接在…之前”。before用于否定句还可表示“直到…为止”。注意before之后只能接表示时间点的名词，而不能接表示时间段的名词。 　　2.before可用于表示动态或静态的位置，意思是“在…之前”，与behind相对。 　　3.before可用于表示顺序或排列上的“在…之前”或“居于…之前”，与after相对。引申可用于表示比较，即在等级、价值、重要性、能力等方面的“在先”“优于”“重于”。再引申则可用于表示对某事物的优先选择，即“宁可”或“与其…宁可”。 　　We must stop and rest before going any farther. 　　我们必须停下来休息一下再向前去。 　　You must pay attention to this problem before every thing. 　　你应该首先注意这个问题。

BEFORE的用法：before表示“在……之前”的意思，强 调时间先后关系；1.主句为否定式终止性谓语动词。常见的动词是open,start,leave,arrive,finish, stop等。例如： (1)The noise of the street didn"t stop before it was midnight. (2)The children won"t come back before it is dark. (3)I didn"t leave the lovely boy before his mother came home. 2.主句为肯定式、延续性谓语词，这类动词用stand,stay,talk,be,wait等。例如： (1)He lived with his parents before he graduated from school. (2)I will wait before he comes to my help. (3)I shall stay heer before you come back.1.主句这肯定式、终止性谓语动词，只用before。例： (1)He fell asleep before I could take off his clothes. (2)We arrived there before it atarted to rain. (3)The holiday came to the end befor I knew it. (4)He almost knocked me down before he saw me. 2.主句谓语动词强调动词的迟缓性，只用before，常伴有时间段状语或时间段暗示。例： (1)It was quite some time before he found the elephant at all. (2)We had walked a long way before we found some water. (3)We had sailed for two days before we saw the land. (4)The fire lasted about four hours before the firefighters could countrol it. (5)It was midnight before my brother came home. (6)It was three months before they met again. 3.如果强调从句谓语动作未发生，就发生主句谓语动作，只用before。常译为“未及”，“不”或“不等……就”。例： (1)We can leave early in the morning before it gets too hot. (2)I must write it down before I forget it. (3)We do want to buy something now before prices go up. 4.表“与其说……倒不如”，“与其……毋宁……”只用before。例： (1)I would give up my job before I"d agree to be dismissed. (2)He will die of hunger before he will steal. 5.在某些特定句型中用before。例如： (1)It was not long before the whole country rose up. (2)It will probably not be long before they understand each other. ————————————————————————OVER————————

应该是过去完成时

before是在。。。之前since 是从。。。时间开始。。。

GRAMMAR 语法In a clause beginning with before that refers to the future, use the present tense or present perfect, not "will" 在以before开头的表示将来的分句中，要用现在式或现在完成式，而不用willu2022I want to get home before it rains (NOT before it will rain). 我想在下雨前赶回家。

1.主句+before +主语+could “未来得及”如 He rushed out of the room before I could stop him.2.it was/wasn"t +一段时间+before +从句 “过了..才/不到...就”如 3.it will /won"t be+一段时间+before从

before作为单个的副词，也就是单独使用时，经常用在现在完成时态中，也可以用在一般过去时态中。 扩展资料 　　Before时态 　　连词before表示主句和从句的动作顺序时，过去完成时可以用于主句，也可以用于从句，意义相同。例如： 　　Before he entered the institute,he had served in the army. 　　如果before从句用一般过去时，则主句用一般过去时或过去完成时均可，意义相同。 　　Theconcert had started before we got to the hall.