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until和unless的区别

一、作为从属连词含义不同,引导从句性质不同unless与until均为从属连词,unless表“除非”,强调条件,引导条件状语从句;until表“直到”,强调时间的延续,引导时间状语从句。1. I didn"t know the news until my teacher told it to me.2. I couldn"t know the news unless my teacher told it to me.3.—Was his father very strict with him when he was at school?—Yes. He had never praised him until he became one of the top students in his grade.析:句1动词didn"t know表明该句强调时间的延续,表“我不知道这消息”的状态一直延续到“老师告诉我”,因此应用until引导时间状语从句。句2动词couldn"t know表明该句强调条件,表“我不可能知道这消息,除非老师告诉我”,因此应用unless引导条件状语从句。句3表明“他爸爸从来没有表扬他”的状态一直延续到“他变成年级最好的学生之一”,因此也应用until引导时间状语从句。二、作为从属连词引导的从句常用一般现在时表示将来unless引导的条件状语从句和until引导的时间状语从句常用一般现在时表示将来。例1:除非邀请你否则别进来。误:Don"t come in unless you will be invited to.正:Don"t come in unless you"re invited to.例2:除非他来,我们不可能去。误:Unless he will come, we won"t be able to go.正:Unless he comes, we won"t be able to go.三、作为从属连词引导的状语从句可转换为省略式创新句型unless引导条件状语从句和until引导时间状语从句时,如果主从句主语一致(或主从句主语不一致,但从句主语为it),从句谓语部分含有be,可将从句主语和动词be省略,构成省略式创新句型。例1:I won"t come to see you unless I am asked to. 除非你邀请我,我才会来看你。析:因为主从句主语一致,从句谓语又含有am,所以可将从句主语I和动词am 省略,构成省略式创新句型:I won"t come to see you unless asked to.例2:The soldiers will not cross the river unless they are ordered to. 除非接到命令,战士们不会过河。析:因为主从句主语一致,从句谓语又含有are,所以可将从句主语they和动词are省略,构成省略式创新句型:The soldiers will not cross the river unless ordered to.注意:until也可作为介词。例如:I have remembered her until now. 直到现在我还记得她。

英语问题,如何区别not...unless...,not...until...和not...before...

untilhehascome强调直到....才是一种临界状态直到他回来我才完成作业beforehecame强调再他回来之前我没法完成作业一、作为从属连词含义不同,引导从句性质不同unless与until均为从属连词,unless表“除非”,强调条件,引导条件状语从句;until表“直到”,强调时间的延续,引导时间状语从句。1.Ididn"tknowthenewsuntilmyteachertoldittome.2.Icouldn"tknowthenewsunlessmyteachertoldittome.3.—Washisfatherverystrictwithhimwhenhewasatschool?—Yes.Hehadneverpraisedhimuntilhebecameoneofthetopstudentsinhisgrade.析:句1动词didn"tknow表明该句强调时间的延续,表“我不知道这消息”的状态一直延续到“老师告诉我”,因此应用until引导时间状语从句。句2动词couldn"tknow表明该句强调条件,表“我不可能知道这消息,除非老师告诉我”,因此应用unless引导条件状语从句。句3表明“他爸爸从来没有表扬他”的状态一直延续到“他变成年级最好的学生之一”,因此也应用until引导时间状语从句。二、作为从属连词引导的从句常用一般现在时表示将来unless引导的条件状语从句和until引导的时间状语从句常用一般现在时表示将来。例1:除非邀请你否则别进来。误:Don"tcomeinunlessyouwillbeinvitedto.正:Don"tcomeinunlessyou"reinvitedto.例2:除非他来,我们不可能去。误:Unlesshewillcome,wewon"tbeabletogo.正:Unlesshecomes,wewon"tbeabletogo.三、作为从属连词引导的状语从句可转换为省略式创新句型unless引导条件状语从句和until引导时间状语从句时,如果主从句主语一致(或主从句主语不一致,但从句主语为it),从句谓语部分含有be,可将从句主语和动词be省略,构成省略式创新句型。例1:Iwon"tcometoseeyouunlessIamaskedto.除非你邀请我,我才会来看你。析:因为主从句主语一致,从句谓语又含有am,所以可将从句主语I和动词am省略,构成省略式创新句型:Iwon"tcometoseeyouunlessaskedto.例2:Thesoldierswillnotcrosstheriverunlesstheyareorderedto.除非接到命令,战士们不会过河。析:因为主从句主语一致,从句谓语又含有are,所以可将从句主语they和动词are省略,构成省略式创新句型:Thesoldierswillnotcrosstheriverunlessorderedto.注意:until也可作为介词。例如:Ihaverememberedheruntilnow.直到现在我还记得她。

如何区别not.until与not.unless的用法

until 的意思是 up to the time when(直到……时为止),表示时间。如: (1) The hot weather lasted until September. 炎热的天气一直持续到9月。 (2) I waited until three o"clock, but he didn"t come. 我一直等到3点,但他没来。 (3) The air becomes thinner and thinner until it disappears. 空气越来越稀薄,直到消失。 not…until…的意思是:直到……才……;在……之前不要……。如: (1) They didn"t find her until the next day. 他们直到第二天才找到她。 (2) She won"t go home until after the exam. 她要考完试之后再回家。 (3) I didn"t believe it till I saw it with my own eyes. 我原先不相信,直到亲眼看了才相信。 (4) I didn"t miss the key until I got home and found it wasn"t in my bag. 直到我回家发现钥匙不在口袋里才知道丢了。 unless 的意思是 if…not(如果不……),表示条件。如: (1) You will fail unless you work hard. 你若不努力就会失败。 (2) Come tomorrow unless I phone. 如果我不打电话,你明天就来吧。 (3) I"ll take the job unless the pay is too low. 如果工资不是太低,我会接受这一工作的。 not…unless…的意思是:除非……否则不……。如: (1) Don"t act unless you"re certain. 没有把握就不要做。 (2) I won"t go unless I"m invited. 除非请我,不然我就不去。 (3) She will not work hard unless you push her. 除非有人督促她,不然她不会努力。 (4) The targets would not be achieved unless other departments showed equal commitment. 除非其他部门同样努力,否则这些目标无法达成。 (5) He won"t want to eat it unless he"s really hungry, in which case he"ll eat almost anything. 除非很饿,否则他不会吃东西,一旦饿了,他几乎什么都吃。 但在有些情况下,用 not…until…和 not…unless…都可以,只是说话者的侧重点稍有不同。如: (1) Don"t start work again until you"re completely better. 在病没完全好之前,请不要开始干活。(侧重时间:开始干活的时间是病好之后) (2) Don"t start work again unless you"re completely better. 除非病完全好了,否则就不要开始干活。(侧重条件:开始干活的条件是病好) 典型考题: 下面两道题答案都只能选 until: (1) I didn"t manage to do it ______ you had explained how.(1987年高考题) A. unless  B. until  C. when D. since (2) —Was his father very strict with him when he was at school? —Yes. He had never praised him _______ he became one of the top students in his grade. (2003北京春季高考题) A. after B. unless C. until D. when 这两题要选 unless 除了与句意有关外,还与句子时态有关。在这两个句子中,如果要填 until,就说明说话者强调条件,如果是这样的话(联想大家都熟悉的“主将从现”),主句的时态就可能考虑要用将来时态(比如过去将来时、过去将来完成时等)。比如: (1) I wouldn"t have managed to do it unless you had explained how.(此句只是为了顺应语意而写,其实这句是不对的,因为这样一来,句子就成了虚拟语气,而 unless 通常不用于虚拟语气,正确的写法是:I wouldn"t have managed to do it if you hadn"t explained how.) (2) He would never praise him unless he became one of the top students in his grade.(这句的主句谓语用 would never praise,后面用 unless 来强调条件就对了)

如何区别not.until与not.unless的用法

until 的意思是 up to the time when(直到……时为止),表示时间。如:(1) The hot weather lasted until September. 炎热的天气一直持续到9月。(2) I waited until three o"clock, but he didn"t come. 我一直等到3点,但他没来。(3) The air becomes thinner and thinner until it disappears. 空气越来越稀薄,直到消失。not…until…的意思是:直到……才……;在……之前不要……。如:(1) They didn"t find her until the next day. 他们直到第二天才找到她。(2) She won"t go home until after the exam. 她要考完试之后再回家。(3) I didn"t believe it till I saw it with my own eyes. 我原先不相信,直到亲眼看了才相信。(4) I didn"t miss the key until I got home and found it wasn"t in my bag. 直到我回家发现钥匙不在口袋里才知道丢了。unless 的意思是 if…not(如果不……),表示条件。如:(1) You will fail unless you work hard. 你若不努力就会失败。(2) Come tomorrow unless I phone. 如果我不打电话,你明天就来吧。(3) I"ll take the job unless the pay is too low. 如果工资不是太低,我会接受这一工作的。not…unless…的意思是:除非……否则不……。如:(1) Don"t act unless you"re certain. 没有把握就不要做。(2) I won"t go unless I"m invited. 除非请我,不然我就不去。(3) She will not work hard unless you push her. 除非有人督促她,不然她不会努力。(4) The targets would not be achieved unless other departments showed equal commitment. 除非其他部门同样努力,否则这些目标无法达成。(5) He won"t want to eat it unless he"s really hungry, in which case he"ll eat almost anything. 除非很饿,否则他不会吃东西,一旦饿了,他几乎什么都吃。但在有些情况下,用 not…until…和 not…unless…都可以,只是说话者的侧重点稍有不同。如:(1) Don"t start work again until you"re completely better. 在病没完全好之前,请不要开始干活。(侧重时间:开始干活的时间是病好之后)(2) Don"t start work again unless you"re completely better. 除非病完全好了,否则就不要开始干活。(侧重条件:开始干活的条件是病好)典型考题:下面两道题答案都只能选 until:(1) I didn"t manage to do it ______ you had explained how.(1987年高考题)A. unless  B. until  C. when D. since(2) —Was his father very strict with him when he was at school?—Yes. He had never praised him _______ he became one of the top students in his grade. (2003北京春季高考题)A. after B. unless C. until D. when这两题要选 unless除了与句意有关外,还与句子时态有关。在这两个句子中,如果要填 until,就说明说话者强调条件,如果是这样的话(联想大家都熟悉的“主将从现”),主句的时态就可能考虑要用将来时态(比如过去将来时、过去将来完成时等)。比如:(1) I wouldn"t have managed to do it unless you had explained how.(此句只是为了顺应语意而写,其实这句是不对的,因为这样一来,句子就成了虚拟语气,而 unless 通常不用于虚拟语气,正确的写法是:I wouldn"t have managed to do it if you hadn"t explained how.)(2) He would never praise him unless he became one of the top students in his grade.(这句的主句谓语用 would never praise,后面用 unless 来强调条件就对了)

翻译:unless otherwise notified by the authorities.

工程部和客房部清理现场,除非收到上级的另行通知

unless we spend money to spot

小题1:B 小题2:A 小题3:B 小题4:D 小题5:C 略

unless的用法和例句

unless有低于;在 什么下;在什么之内等意思,这个单词在 作文 中经常会用到,那么你知道unless的用法吗?下面跟着我一起来学习一下unless的用法和例句_unless单词怎么使用,希望对大家的学习有所帮助! unless的用法大全: unless的用法1:unless所引导的条件状语从句常用一般现在时表示将来意义,主句多用一般将来时。unless在表示“除非”时,如其引导的从句谓语是be,而从句的主语跟主句的主语相同时,从句的主语和be就可省略。有时从句中主语为it时,也可省略it或从句中的有关成分。 unless的用法2:在unless引导的肯定形式的条件从句中通常用肯定词,如:already, still, some, too。在unless引导的否定形式的条件从句中通常用否定词。 unless的用法3:unless表示条件时后可接现在分词 短语 。 unless的用法4:unless还可用作介词,意思是“除…以外”。例如:Nothing will come out of it,unless disaster.这件事除了引起灾祸以外不会有什么结果。 unless的用法例句: 1. The targets would not be achieved unless other departments showed equal commitment. 除非其他部门同样努力,否则这些目标无法达成。 2. Training is worthless unless there is proof that it works. 除非能证明训练有效,否则就是白搭。 3. The South African mailboat arrived on Friday mornings unless bad weather intervened. 除非受恶劣天气干扰,南非邮船一般在星期五上午抵达。 4. All bitches should be spayed unless being used for breeding. 除非是用作种犬,所有的母犬都应摘除卵巢。 5. I tend to forget things unless I mark them down. 除非把事情记下来,否则我常常会忘事。 6. No-one could use the computer unless they had a password. 除非知道密码,否则谁也用不了那台计算机。 7. The conservatory will get very hot in summer unless shading is used. 夏天如果不用遮光罩的话,暖房会变得特别热。 8. Unless these questions are solved, the region will remain a powder keg. 除非这些问题得到解决,否则该地区会一直是个火药桶。 9. She refused to testify, unless the murder charge against her was dropped. 除非撤销对她的谋杀指控,否则她拒绝作证。 10. Why did you need a room unless you were up to something? 除非你要搞什么小动作,不然你为什么单要一间房? 11. Such schemes mean little unless they impact on people. 这些计划没什么意义,除非它们对人民产生影响。 12. Such attitudes are valueless unless they reflect inner cognition and certainty. 这种态度如果不能反映内心的认知和把握就毫无价值。 13. I"m not happy unless I ride or drive every day. 只有每天骑车或开车我才会开心。 14. He resolutely refused to speak English unless forced to. 除非迫不得已,否则他坚决不说英语。 15. Unless you respect other people"s religions, horrible mistakes and conflict will occur. 如果不尊重别人的宗教信仰,就会祷下大错,酿成冲突。 unless的用法和例句相关 文章 : ★ 初中高频词unless的用法总结 ★ testify的用法和短语例句 ★ until的用法和例句 ★ tend的用法和短语例句 ★ expand的用法和短语例句 ★ appoint的用法和短语例句是什么意思 ★ remain的用法和短语例句 ★ forget的用法和短语例句 ★ ride的用法和短语例句

unless、except、besides,这几个单词的区别是什么?

unless 是“除非”的意思,接从句e.g My boss can"t fire me unless he can prove me unsuitable for the job.except,expect that,都是“除了”的意思except接名词.e.g everybody is crying, except you.except that接从句 e.g The plan is perfect, except that it exceeds our budget.except for 是“要不是因为……”的意思额.e.g She would have travelled more except for lack of money.besides 有两种用法.1、“除了”.这个时候,besides一定要紧跟在句子设定的范围之后,例如在“expect”的例子中,如果用besides就要说 everybody besides you is crying.而且“except”有比较强的“唯一一个特例”的感觉.2、besides也可以用作连词,标转折,用于句首.

(新概念英语)A puma will not attack a human being unless it feels itself to be ( ).

In a corner处于困境;处于困难中;处境险恶;处于困境中偷偷摸摸地,暗中地,秘密地 在角落里;在角落;表示处于困境、尴尬的境地In a trap 指陷阱,圈套,上当所以选B,望采纳,谢谢

The little boy is very shy,he never speaks unless_____.答案为什么是spoken to?为什么要加to?

这个小男孩很害羞,除非别人跟他讲话否则他从来不说话, unless spoken to是 除非有人跟他讲话,是被动语态所以用过去分词,to是speak这个动词介词,必须加上。 unless spoken to是“unless someone speaks to the boy” 的简洁的被动表达法

if和unless有什么区别? 用法上有什么区别? 举一些例子,

首先从字面意义上就不完全相同.if表如果,可用于从句,或者开头表如果 unless用在句首的话后面用倒装,用在句中是 如果不/除非 表转折 if: 1.(表示条件)如果 He will come if you invite him. 如果你请他,他会来的. 2.(表示虚拟)假如,要是 If I were you,I would never do that. 如果我是你,我决不做那件事. 3.(表示让步)即使 We"ll go even if it rains. 即使下雨我们也要去. 4.是否 I wonder if she is ill. 不知她是否病了. 5.(表示因果关系)每一次...的时候(总是会) If I feel any doubt,I inquire. 我一感到有疑问就随时询问. n. 1.条件;设想[C] There are too many ifs in his offer. 他的提议中条件太多了. unless: conj. 1.如果不,除非 I won"t apologize unless she apologizes first. 除非她先道歉,否则我不道歉. prep. 1.除...外

关于unless和 until的用法

not....until句型啊!翻译过来就是,学生们不能成功的做出这道题,直到老师解释怎么做~unless是除非的意思~

unless,only if和if的区别

unless是除非的意思,常用于引导让步条件状语only是仅仅、只的意思,用于引导限制性条件if假如、如果,引导假设条件 希望能够帮到楼主

请问下:1:“Only if" 的用法。2:它和"unless"的用法的区别是什么啊?致敬ing~~~

这两个完全不同,那需要区别?unless===if notONLY if===only when

only if和unless的区别拜托各位了 3Q

only if用于肯定句,引导条件状语从句,而unless用于否定句。only if的意思是:只有,除非。相当于unless。分别用only if和unless举个例子吧:I will go only if you go with me.除非你跟我一起走,否则我就不走。这个句子如果用unless来翻译的话,就是:I won"t go unless you go with me.(否定句)

only if的用法与unless的用法有什么区别?

only if (用于句首,后接从句主谓倒装)只要;只有conj.只有当(只是在 ...的时候)例句:Only if I get a job will I have enough money to go to school这两个完全不同,那需要区别?unless===if notONLY if===only whenOnly if意为只有当 ......例:Only if you study hard can you get good grades.一般后面的主句用倒装,中间不隔开。unless是除非的意思例:I won"t go to the party unless invited..我只有找到了工作才有足够的钱上学.I can buy the house only if ...

only if和unless的区别

onlyif用于肯定句,引导条件状语从句,而unless用于否定句。onlyif的意思是:只有,除非。相当于unless。分别用onlyif和unless举个例子吧:Iwillgoonlyifyougowithme.除非你跟我一起走,否则我就不走。这个句子如果用unless来翻译的话,就是:Iwon"tgounlessyougowithme.(否定句)

only if,unless用法,区别是什么?

only if (用于句首,后接从句主谓倒装)只要;只有conj.只有当(只是在 ...的时候)例句:Only if I get a job will I have enough money to go to school这两个完全不同,那需要区别?unless===if notONLY if===only whenOnly if意为只有当 ......例:Only if you study hard can you get good grades.一般后面的主句用倒装,中间不隔开。unless是除非的意思例:I won"t go to the party unless invited..我只有找到了工作才有足够的钱上学.I can buy the house only if ...

only if, only when,unless 的用法和区别?

only if:要是。。。就好了,表示虚拟only when:只有当。。。。表示条件unless:除非。。。表示唯一的选择

英语unless用法归纳

unless是从属连词,引导条件状语从句,含有否定意义,相当于if条件状语从句的否定形式。所以unless = if not。注意:unless引导的条件状语从句和if条件状语从句,与其它时间状语从句一样,用一般现在时代替将来时。 扩展资料   Unless something unexpected happens, I"ll see you tomorrow.   如果不出意外,我明天去看你。   They refused to release their hostages unless certain conditions were met.   除非某些条件得到满足,否则他们不会释放人质。   The theatre faces closure unless it gets an urgent cash injection.   剧院面临着倒闭,除非有大笔救急现金投入。   The government does not want to go to war unless all other alternatives have failed.   除非所有其他方法都行不通,否则政府不希望开战。   Unless my eyes deceive me, that"s his wife.   如果我没有看错的话,那是他的妻子。

unless后面的时态是什么

a man can not ride your back unless it is ben

a man can not ride your back unless it is ben一个人不能骑你的背,除非它是本

unless造句简单

1.Do n"t come unless i ring you up .2.He "ll certainly come unless he is ill .3.You will fail unless you bestir yourself .4.I can"t love you unless i give you up .5.Unless absolutely compelled , i shall not go .6.Don"t knock it unless you can do better .7.He "ll never pay up unless you get tough with him .8.He won"t do it unless he is very much worried .

.________ twice, the postman refused to deliver our letters unless we chained our dog. A.Be..

B。 根据句意,句子主语the postman与动词bite之间为被动关系,所以首先可排除选项C;再根据句意(尤其是注意关键词twice)可知,表示正在进行选项A和表示将要发生的选项D均不合题意。全句意为:邮递员被狗咬了两次之后要我们把狗拴起来,不然就不给我们送信了。

____twice,the postman refused to deliver our letters unless we chained our dog.

a.being bitten

英语选择。-------twice ,the postman refused to deliver our letters unless we changed our dog.

选B啊,用过去分词表示被动,C改为Havingbeenbitten就对了,因为被狗咬对postman有影响,分词中havingdone表示强调动作已经发生。

uff08uff09twiceuff0cthe postman refused to deliever our letters unless we chained our dog.

D

____twice,the postman refused to deliver our letters unless we chained our dog.

b,d

高一英语 ____twice ,the postman refused to deliver our letters unless we chained our dog

选B。本句出题点是过去分词的被动式,邮递员是被狗咬,所以C项havingbitten错误,而且是已被咬过,不是正被咬,所以A项beingbitten错误,Dtobebitten即将被咬,也错。本句意思是:因为被咬过两次,所以邮递员拒绝给我们送信除非我们把狗拴上。有用请采纳,谢谢!

- Claudia, are you going to Jeff’s birthday party on Saturday?-Unless I______ . A.will be in.

B 试题分析:句意:克劳迪娅,周六你去参加杰夫的生日聚会吗?——除非我收到邀请。结合语境可知下文省略了主句,当主句描述将来发生的动作时,英语条件状语从句中用一般现在时态表示将来动作。从句主语是动作对象,故用被动语态,选B。

翻译:American educators fear that unless creativity

American educators fear that unless creativity has been acquired early, it may never emerge.美国教育工作者担心,除非创造力得到了很早,它可能永远不会出现。American educators fear that unless creativity has been acquired early, it may never emerge.美国教育工作者担心,除非创造力得到了很早,它可能永远不会出现。

being unless it is cornered

cornered:被逼至绝路的 形容词

unless引导的条件状语从句例句

Unless you leave now, you will be late for school.    除非你早点出发,(否则)你上学会迟到。
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