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at or in on 的用法区别

2023-07-24 11:42:48
TAG: in
共2条回复
nicehost

这个问题我会,虽然本人英语口语不是很好,但是对英语四六级词汇还是很熟悉的~下面给大家从三个方面具体解释一下:


【含义】

in是通常用于表示在.....里;在.....地方;在.....期间,也经常表示一种“在”的含义。

on通常表示.....向;.....对;.....上,是一种计划进行时的语态。

at最经常用的就是“.....在”。

or用在选择疑问句中,意为“或者,还是”。

【用法】

一、at:u2002u2002

(1)时间的一点、时刻等。

(2)较短暂的一段时间。可指某个节日或被认为是一年中标志大事的日子。

(3)用于指较小的地方。

(4)用于门牌号码前。

1、表示“某一具体时刻(即几点几分时)”,须用介词at。

2、用在特定的时候(时节、时机)时,须用介词at。

3、表示“在中午、在夜晚、在周末”时,须用介词at。

4、表示“在……岁”时,须用介词at。

二、in:

(1)在某个较长的时间(如世纪、朝代、年、月、季节以及泛指的上午、下午或傍晚等)内。

(2)在一段时间之后。一般情况下,用于将来时,谓语动词为瞬间动词,意为“在……以后”。

(3)用于指较大的地方。

(4)虽然是很小的地方,如果说话人住在那里,也可用in。商店、学校、机关等,若看作一个地点(point)用at,若看作一个场所(place)用in。

1、表示“在某年/月/季节”这个含义时,须用介词in。

2、表示“从现在起一段时间以后”时,须用介词in。

3、表示“在某世纪”时,须用介词in。

4、表示“在某年代或特定世纪某年代”时,须用介词in。

三、on:u2002

(1)具体的时日和一个特定的时间,如某日、某节日、星期几等。

(2)在某个特定的早晨、下午或晚上。

(3)准时,按时。

(4)一般指与面或线接触,意为“在……上;在……旁”。

1、表示“在具体的某一天”或“(在具体的某一天的)早上、中午、晚上”等,须用介词on。

2、表示“在星期几”或“在星期几的早上、中午、晚上”等,须用介词on。

3、表示“在某一节日”时,须用介词on。

四、or:

(1)并列结构中or通常用于否定句表示“和,与”之意。

(2)or用在选择疑问句中,意为“或者,还是”。例如:Is he a doctor or a teacher?翻译为“他是医生还是教师?”这里只能用or 。

(3)固定搭配不同:or在句型“祈使句+or+陈述句”中,表示在以祈使句为条件下的相反假设,or意为“否则,要不然”。either…or意思为"或者……或者……"。注意谓语动词的主谓一致采用就近原则。

另外,or的短语有:or so表示“大约”的意思;or else用以表示威胁;or rather译为“说得更确切些或加以更正”,主要是or的特殊用法。

【例句】

It often rains here in summer.

夏天这里常常下雨。

They left on a rainy morning.

他们是在一个雨天的早上离开的。

He gets up at six o""""clock every day .

他每天六点起床。

do you need pepper or salt?

盐或者胡椒,你需要哪个?

wio

at适用于时间, 如at 4:00和方位,at the beginning。 or很明显是或者的意思。in用于地方、方位或时间,如in September;in the house; in the hole;in the afternoon。 on则是用于方位, 如 on the table, 或是日前...

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2023-07-24 09:51:313

orso的解释orso的解释是什么

orso的意思是:大约,左右。orso的意思是:大约,左右。orso的例句是Theworkwilltaketendaysmoreorless.这项工作大约要花十天时间。orso【近义词】around到处。一、英英释义点此查看orso的详细内容Adverb:(ofquantities)imprecisebutfairlyclosetocorrect;"lastedapproximatelyanhour""injustaboutaminute""he"sabout30yearsold""I"vehadaboutallIcanstand""wemeetaboutonceamonth""somefortypeoplecame""weighsaroundahundredpounds""roughly$3,000""holds3gallons,moreorless""20orsopeoplewereattheparty"二、网络解释1.orso是什么意思1.大约,左右:everso非常,极其|orso大约,左右|sothat以便,为使;所以,因此2.大约:orrather更精确地说,倒不如说|orso大约|otherfrom不同于3.大约,差不多:orrather毋宁说;更确切地说|orso大约,差不多|otherthan除...之外;不同于;非4.4.左右:24.losepopularitywith...在......中失去流行度或受欢迎度|1.orso左右|2.makesense有意义三、例句Theworkwilltaketendaysmoreorless.这项工作大约要花十天时间。I"llseeyouat9a.m.orthereabouts.我在九点或大约九点时见你。orso的相关近义词around、roughly、closeto、justabout、moreorless、about、some、approximatelyorso的相关临近词Orme、or、ormolufurniture、OrioleBlackbird、Oryzomysminutus、Ormosiaolivacea、OR-parallelism、orlginalspecies、ornithosisvirus、orousNiTialloy、Orungaorbivirus点此查看更多关于orso的详细信息
2023-07-24 09:51:391

rather后接比较级对吗?

rather好象不能修饰比较级吧
2023-07-24 09:52:033

orso的意思orso的意思是什么

orso的意思是:大约,左右。orso的意思是:大约,左右。orso的例句是Theworkwilltaketendaysmoreorless.这项工作大约要花十天时间。orso【近义词】around到处。一、英英释义点此查看orso的详细内容Adverb:(ofquantities)imprecisebutfairlyclosetocorrect;"lastedapproximatelyanhour""injustaboutaminute""he"sabout30yearsold""I"vehadaboutallIcanstand""wemeetaboutonceamonth""somefortypeoplecame""weighsaroundahundredpounds""roughly$3,000""holds3gallons,moreorless""20orsopeoplewereattheparty"二、网络解释1.orso是什么意思1.大约,左右:everso非常,极其|orso大约,左右|sothat以便,为使;所以,因此2.大约:orrather更精确地说,倒不如说|orso大约|otherfrom不同于3.大约,差不多:orrather毋宁说;更确切地说|orso大约,差不多|otherthan除...之外;不同于;非4.4.左右:24.losepopularitywith...在......中失去流行度或受欢迎度|1.orso左右|2.makesense有意义三、例句Theworkwilltaketendaysmoreorless.这项工作大约要花十天时间。I"llseeyouat9a.m.orthereabouts.我在九点或大约九点时见你。orso的相关近义词around、roughly、closeto、justabout、moreorless、about、some、approximatelyorso的相关临近词Orme、or、ormolufurniture、OrioleBlackbird、Oryzomysminutus、Ormosiaolivacea、OR-parallelism、orlginalspecies、ornithosisvirus、orousNiTialloy、Orungaorbivirus点此查看更多关于orso的详细信息
2023-07-24 09:52:101

The school has made it a rule that no student shall take an illegal vehicleaschool bus.

【答案】:A考查短语辨析。other than“除了,除了……之外”,常用于否定结构中;rather than“而不是”,连接两个同等成分,肯定前者,否定后者;or rather“更确切地说”;or else“否则,要不然”。句意为“学校规定学生不能乘坐除校车以外的其他非法机动车辆”。根据语境可知A项最符合句意。
2023-07-24 09:52:171

哪些词可以用作插入语?

1、形容词(短语)做插入语;2、副词(短语)做插入语;3、介词(短语)做插入语;4、V-ing(短语)做插入语;5、不定式(短语)做插入语;6、句子(陈述句和一般疑问句)做插入语。形容词(短语)做插入语能用作插入语的形容词(短语)常见的有:true,wonderful,excellent,strange to say,most important of all, sure enough等。 如: True,it would be too bad. 真的,太糟了。 Wonderful,we have won again. 太好了,我们又赢了。 Strange to say,he hasn"t got my letter up to now. 说来也奇怪,他到现在还没有收到我的信。 Most important of all,we must learn all the skills. 最重要的是,我们必须掌握所有的技巧。副词(短语)做插入语能用作插入语的副词(短语)有:indeed,surely,still,otherwise,certainly,however,generally, personally,honestly,fortunately,luckily,though,besides,exactly,perhaps,maybe,probably,frankly,or rather等。 如: When he got there,he found,however,that the weather was too bad. 可是到了那儿之后他发现,那儿的天气太坏了。 Otherwise,he would still be at home. 不然的话,他还会在家的。介词(短语)做插入语能用作插入语的介词短语有:in fact,in one"s opinion,in general,in a word,in other words,in a few words,of course,by the way,as a result,for example,on the contrary,on the other hand,to one"s surprise,in short,as a matter of fact,in conclusion,in brief等。 如: You can"t wait anymore-in other words,you should start at once. 你不能再等了--换言之,你得立即出发。 On the contrary,we should strengthen our cooperation with them. 相反,我们应该加强和他们的合作。V-ing(短语)做插入语能用作插入语的V-ing(短语)常见的有:generally speaking,strictly speaking,judging from by,talking of, considering等。 如: Generally speaking,the weather there is neither too cold in winter nor too hot in summer. 一般来说,那儿的气候冬天不太冷,夏天不太热。 Judging by his clothes,he may be an artist. 从衣着来判断,他可能是个艺术家。不定式(短语)做插入语能用作插入语的不定式短语有:to be frank,to be honest,to be sure,to tell you the truth,to make matters worse,to sum up,to start with,to begin with等。 如: To be frank,I don"t quite agree with you. 坦率地说,我不太同意你的意见。 To tell you the truth,I"m not so interested in the matter. 跟你说实话,我对这件事情的兴趣不大。 To sum up,success results from hard work. 总而言之,成功是艰苦努力的结果。句子(陈述句和一般疑问句)做插入语能用作插入语的句子有:I am sure,I believe,I think,I know,I suppose,I hope,I"m afraid,you see, what"s more,that is to say,as we know,as I see,believe it or not等。 如: Some animals only half-hibernate,that is to say,their sleep is not such a deep one. 有些动物只是半冬眠,就是说,它们的睡眠并不是深度睡眠。 I believe,China will catch up with the developed countries sooner or later. 我确信,中国迟早会赶上发达国家。 He can"t pass the exam,because he doesn"t study hard. What"s more,he isn"t so clever. 他不能通过这次考试,因为他学习不认真,更何况他又不太聪明。
2023-07-24 09:52:271

单词里or发哪些音?

or是五个-r音节字母组合之一。如果是重读音节,除了在w后发[u0259:]外,都发[u0254:]音;如果是非重读音节,一般读作短元音[u0259]。含or的单词很多,举例如下:[u0259:]word,work,worth,world,worse,worm[u0254:]for,lord,short,cord,corner,forth[u0259]actor,doctor,investor,competitor,instructor
2023-07-24 09:52:351

求初中所有关于rarher 的短语和相关用法??谢谢

用法: 一、rather作副词,意为"宁愿;宁可"。作此意解的rather常和would / had连用,构成固定短语。would / had rather…than译为"宁愿……而不愿" ,应该特别注意此短语的否定构成及其后接的动词形式。如:   He would rather have the small one than the large one. 他宁愿要一个小的,而不要大的。   I"d rather take the slowest train than go there by air. 我宁愿坐最慢的火车,也不乘飞机去那里。   I would rather not tell you the secret right now. 我现在不愿把那个秘密告诉你。   would / had rather 后接从句时,从句中的谓语动词用虚拟语气。如:   I would / had rather you posted the letter right away, 我倒希望你把这封信立即发出。   I would / had rather that she had stayed at home. 她那时要是留在家里就好了。   二、rather作副词用时,意为"更确切地"。 此用法的rather常用在or rather这一短语中,表示想要纠正已经说过的话,或欲使已说过的话更确切。如:   He worked till late last night, or rather, early in the morning. 他一直工作到深夜,或者更确切地说,到今天凌晨。   The building is like a palace, or rather a temple. 这幢建筑物像一座宫殿,或者更确切地说像一座寺庙。   三、rather作副词用时, 还可作"相当;颇;有点儿"解。如:   You"ve done rather well.你做得相当好。   The way he is living is rather strange to me. 他的生活方式我觉得很怪。   rather, fairly, quite, pretty的区别:   1. 从程度上说, fairly是最轻的一个;quite比fairly 语气稍强;rather 在程度上比quite更重一些;pretty 和rather 差不多,但大多数情况下用于非正式文体。如:   They were getting along fairly well with each other. 他们相处还不错。   He was quite polite, but he wasn"t ready to help me. 他相当有礼貌,但他并不愿意帮助我。   There"s something rather strange about the way he talks to you. 他跟你说话的样子真有点怪。   Twenty-five is pretty old to take up ballet dancing.二十五岁才学跳芭蕾,年纪就太大了。   2. rather 和quite可放在不定冠词前,也可放在不定冠词之后,还可以和动词连用,而fairly 和pretty没有这些用法。如:   That is quite / rather a surprising result. =That is a quite / rather surprising result. 那是一个相当惊人的结果。   I rather / quite like to go for a walk after supper. 我颇喜欢在晚饭后出去散步。   3. 只有rather可以修饰比较级,还可和too连用。如:   This computer is rather more expensive than that one.这部电脑比那部昂贵一些。   This book is rather too difficult for the beginners.这部书对初学者来说太难了。   四、rather than 的用法。   rather 不仅是一个表示程度的副词,还能用来表示选择,意为"而非;(与其……)倒不如"。rather than 经常用在"平行结构"里,即连接两个对等成分。   I"d prefer to go in August rather than July. 我愿八月去,不愿七月去。   I"d call her hair chestnut rather than brown. 我宁愿说她的头发是栗色,而不是棕色。   We ought to invest in new machines rather than buildings. 我们应该在新的机器上而不是在房屋上投资。   I decided to write rather than telephone. 我决定写信而不打电话。   Rather than get money in such a dishonest way, he would beg in the streets. 他宁愿在街上乞讨,也不愿以这种不正当的手段挣钱。   I always prefer starting early, rather than leaving everything to the last minute. 我总是愿意早开始而不愿意把所有事情都留到最后。rather 词组rather good相当不错would rather表示"宁愿"would rather do 宁愿…would rather… than… 宁愿……而不愿had rather 宁肯,宁愿 would rather not 宁可不(不愿)...the rather because 正因为 ... 所以才..but rather 而宁可说是, 反而...rather…than not 不是别的sooner rather than later 尽早
2023-07-24 09:52:531

高中英语

sound and sleep睡了个好觉make it成功做到manage it设法完成be well worth doing 很值得做be well worthy of being done 很值得做that=so 如此 如:so good a book=that good a book暂时想到的就这些了,望采纳,以后想到了在追加
2023-07-24 09:53:154

英语but rather怎么翻译?

but rather的中文翻译意思是:反而
2023-07-24 09:53:248

在英语中!or和and的用法怎么区分?

1.andconj.[连接并列的名词、代词或数词]同,和,与,如:FatherandIwenttoXinhuabookstoreyesterday.父亲和我昨天到新华书店去过。[连接并列的形容词、副词]又,而且Readslowlyandloudly.读得既要慢些又要大点声音。[口][连接并列的动词,表示目的]Tryandshootthebird.开枪打那只鸟试试。[连接两个并列句]而,而且Ididnotanswer,andhe,too,keptsilent.我没有回答,(而)他也不作声。[连接两个句子,后者表示结果]只要...就会;那么Goatonceandyouwillseeher.马上去,那么你就会见到她了。[连接两个相同的词]反复,一再Wetalkedandtalked.我们说呀,说呀,说个没完。[表示转折]但,却Heissorichandliveslikeabeggar.他非常有钱可是生活得象个乞丐。[表示加重语气]而且Shedidtheworkandshediditwell.她做了这件工作而且做得很好。[用于句子开头以表示连续性或者表示惊异]Andasforus,wearefortunate.可对我们来说,我们是幸运的。Andareyoureallygoingwithhim?嘿!你真要和他一起走吗?[表示同时]Weateanddranktoourfullcontent.我们尽情地连吃带喝饱餐了一顿。[用在数词中,连接十位和百位数等,美国人有时省略不用]onemillion,twohundredandforty-fivethousand,threehundredandthirty-three(=1,245,333)2.orconj.[表示选择][主语的人称、数不一致时,动词随着接近的主语而变化]或,或者;还是JohnoryouareinClassTwo.约翰或者你在二班。[表示不明确,(汉语不译出)]大约,或许twoorthreemiles两三里(距离)[引导同义词或说明语]或者说,即latelastnightorratherearlythismorning昨晚深夜,或者更确切地说,今天一早[常和else连用]否则,要不然Makehaste,or(else)you"llbelate.快点,要不然就来不及了。[在否定结构中否定前后二者]也不...也不Hecannotreadorwrite.他既不会读也不会写。[古][用于句首表示转折]可是,再说Orwhatmanofyou,ifhissonaskshimforaloaf,willgivehimastone?再说,你们中间谁的儿子要个面包,能给他一块石头吗?[表示让步]不管...还是;...也好...也好Rainorshine,I"llgo.不管下雨还是晴天,我都要去其实我们中国人现在的英语教育现状是应试教育,外国人讲话有些东西已经不讲究,中国人还要死抓着不放,在这句中and和or其实都可以用,不过在否定句及疑问句中连接并列成分时我们常用or,如果考试考到,当然还是选or.
2023-07-24 09:53:502

英语作文中的连接词用法?

(1)表示增加的过渡词:also,and,and then,too,in addition,furthermore,moreover again,on top of that/this,another,first---second---third(或者firstly, secondly, thirdly or last but not the least)等。例如:It"s a pretty cat, also friendly. 这是只漂亮的猫,而且很友好(2)表示时间顺序的过渡词:now,then,before,after,afterwards,earlier,later,immediately,soon,next,in a few (more) days,gradually,suddenly,finally等。 Now that spring is here, we can expect milder weather.现在春天来了,我们可以期望较温和的天气(3)表示空间顺序的过渡词:near(to),far(from),in front of,behind,beside,beyond,above,below,to the right / left,around,outside等。 Christmas is drawing near. 圣诞节即将来临。(4)表示对比的过渡词:有两种对比,一种突出比较的双方,另一种是通过对比突出其中一方,取消另一方。 One the one / other hand; and, or rather; yes, but;instead. Everybody knows about his bad temper. On the other hand, they also know of his shrewd judgment. 大家都知道他的脾气很坏。当另一方面,他们也知道他精明的判断力。(5)表示对照的过渡词:but,still,yet,however,on the contrary,in spite of,even though等。 例如:the plan caused not prosperity but ruin. 这个计划带来的不是繁荣而是毁灭(6)表示结 果 和 原 因 的 过 渡 词:because,since,so,as a result,therefore,hence,thus,otherwise,accordingly, at all events, as it turned out, in any event, in consequence/as a consequence, it would be just as well, just as well, that is/was that, but for, consequently, in that event, somehow, thanks to等。 John didn"t attend the meeting because he was ill. 约翰没有出席会议, 因为他病了。
2023-07-24 09:53:591

此题何解(英语)

选A 他昨晚很晚才回家,确切的说是在今天凌晨回的家.
2023-07-24 09:54:062

日语。这个词组是什么意思?

这个词是日语工作这个动词的命令型就是快干活之类的意思吧
2023-07-24 09:54:142

rather可以修饰比较级吗

rather副词 adv.1.在一定程度上; 颇,相当 This book is rather too easy for this boy.这本书对于这个孩子来说太简单。I reckon that he is rather too old to marry again.我认为他的年龄太大, 不太适于再婚。2.或多或少; 有几分; 相当 This restaurant is rather more expensive than that one.这家餐厅的收费比那家贵得多。3.(与动词连用以减弱语气)有点儿,稍微 4.(纠正所说的话或提供更确切的信息)更确切地讲,更准确地说5.(提出不同或相反的观点)相反,反而,而是 1.Admittedly, it is rather expensive but you don"t need to use much. 它的确很贵,但不需要用得很多。 2. a rather bland diet of soup, fish and bread 一个淡而无味的汤、鱼加面包的食谱 3. His answer rather disconcerted her.他的回答使她颇感难堪。 4. I was rather dubious about the whole idea. 我对这整个想法持怀疑态度。 5. We tend to be traditional rather than fashion-forward in our designs. 我们的设计往往流于传统而没有超前意识。
2023-07-24 09:54:326

or 和and的用法是什么

or 是或,and是和
2023-07-24 09:55:094

《傲慢与偏见》的英文版读后感(带翻译,1500词左右)

“Any library is a good library that does not contain a volume by Jane Austen”, when this words about Jane Austen given by Mark Twin first came upon to me, I was, just in your expectation, a little bit surprised. Gradually, however, when I know more about the characteristics of her works, I think the judgement of Mark Twin makes sense in some degree. Especially after I have finished her work Pride and Prejudice and compared it with the contemporary production The Red and the Black written by Stendhal. Less reflection and exposure on social conflicts among different classes is a big pity for Austen"s works, as well as for the readers. Still, however, Austen"s unique interpretation towards marriage is the distinguished feature of her literary accomplishment. And I want to give some reflection on the different kinds of relationships and marriages in Pride and Prejudice.Five different types of relationships or marriages, as far as I am concerned, are presented in this book.The first type, undoubtedly, is the relationship between Jane and Mr. Bingley. They met at a party and almost fell in love with each other just after their first encounter. Bingley"s wealth and courtesy, Jane"s beauty and tenderness, and the similarities in their personality are all the factors that contribute to the relationship. So, though I believe, actually, there is some kind of love between the young lady and the gentleman, it is not the pure and true love, their combination is not for no intention but for some certain desire. So I would like to call their relationship as “Secular Love”.Contrasting to the relationship between Jane and Mr. Bingley, the marriage between Charlotte and Mr.Collins is much less romantic, or no romance at all. One is the Cinderella in reality equipped with no prince, the other is a priest, old and ugly. Their marriage, of course, has no love but compromise. Even Elizabeth thinks “Charlotte the wife of Mr. Collins, was a most humiliating picture!” But what could she do? Just as she said, she is not romantic and she asks only a comfortable home, and this is within Mr. Collins ability. Comparing with being a 27-year-old burden to her family,at least for her, marrying Mr. Collins is the best choice. So as for them, I call “Rational Love” or rather------ “Rational Combination”.Another couple is Mrs. Bennet and Mr. Bennet. Just in the first chapter, I wondered why two people with such different characteristics could live together for 23 years. The wonder disappeared when the explanation was offered by Austen in Chapter 42 about Mr. Bennet"s attitude towards his wife. Captivated by youth and beauty, he married her and very early in their marriage, after knowing the disposition of her, ended his affection and used her ignorance to contribute his amusement, having impropriety of his behavior as a husband. Neither for Mr. Bennet nor for Mrs. Bennet this marriage is quite fair or contented, but both of them should pay, and had already paid the bill of their “Hasty Love”.Lydia"s relationship with Wickham, to some extent, is similar with her parents". Mr. Bennet was captivated by the beauty of his wife and Lydia was fascinated by the handsome appearance of Wickham. Compared with her parents" marriage, however, Lydia"s relationship with Wickham would only turn out a much more unpleasant one, for their marriage is based on the fulfillment of vanity and the desire of property. So I consider their relationship as “Orectic Incorporation”And finally here comes the relationship between Elizabeth and Mr. Darcy. When I first finished the movie of Pride and Prejudice, I still wondered why there is a love flame between them. One is so proud and the other full of prejudice, but when I read more details about this work, the answer has emerged. “Love”, a word we are so familiar with, but what is love? In Austen"s work, I gradually know that love is not just as abstract as we often regard. Take Elizabeth, for example, her love for Daisy is based on two things: respect and gratitude. She respects his valuable qualities: nobility and kindness, and even Wickham had done something so bad to him and his sister, he still didn"t blame him before others or let him lose all dignity in public. Also, she is grateful to Mr. Darcy, for his love, for his forgiveness about her bad manners when she rejected him, for his help to her sister"s marriage and her family"s fame. And finally, these turned out her attachment, affection and love for him. As for Darcy, his attention to Elizabeth was first on her eyes, full of liveliness, thoughts and pursuits and unlike any other ladies, she is such a unique girl that she didn"t flatter him at all, so for him she is so extraordinary and attractive. And Elizabeth got his respect and love because of her own independence, liveliness and uniqueness. And I regard their relationship as “Spirit Love”.Austen"s attitude towards marriage, love, status and property can still be used as a reference. Nowadays, fast food culture derives fast-food-style love, although we are in the era of fast changes, it"s better for us to love rationally and independently. Hope everyone has his real, unique love.
2023-07-24 09:55:182

a rather 和 rather a 的区别。

rather的用法可从以下几点掌握:   一、rather作副词,意为"宁愿;宁可"。作此意解的rather常和would / had连用,构成固定短语。would / had rather…than译为"宁愿……而不愿" ,应该特别注意此短语的否定构成及其后接的动词形式。如:   He would rather have the small one than the large one. 他宁愿要一个小的,而不要大的。   I"d rather take the slowest train than go there by air. 我宁愿坐最慢的火车,也不乘飞机去那里。   I would rather not tell you the secret right now. 我现在不愿把那个秘密告诉你。   would / had rather 后接从句时,从句中的谓语动词用虚拟语气。如:   I would / had rather you posted the letter right away, 我倒希望你把这封信立即发出。   I would / had rather that she had stayed at home. 她那时要是留在家里就好了。   二、rather作副词用时,意为"更确切地"。 此用法的rather常用在or rather这一短语中,表示想要纠正已经说过的话,或欲使已说过的话更确切。如:   He worked till late last night, or rather, early in the morning. 他一直工作到深夜,或者更确切地说,到今天凌晨。   The building is like a palace, or rather a temple. 这幢建筑物像一座宫殿,或者更确切地说像一座寺庙。   三、rather作副词用时, 还可作"相当;颇;有点儿"解。如:   You"ve done rather well.你做得相当好。   The way he is living is rather strange to me. 他的生活方式我觉得很怪。   rather, fairly, quite, pretty的区别:   1. 从程度上说, fairly是最轻的一个;quite比fairly 语气稍强;rather 在程度上比quite更重一些;pretty 和rather 差不多,但大多数情况下用于非正式文体。如:   They were getting along fairly well with each other. 他们相处还不错。   He was quite polite, but he wasn"t ready to help me. 他相当有礼貌,但他并不愿意帮助我。   There"s something rather strange about the way he talks to you. 他跟你说话的样子真有点怪。   Twenty-five is pretty old to take up ballet dancing.二十五岁才学跳芭蕾,年纪就太大了。   2. rather 和quite可放在不定冠词前,也可放在不定冠词之后,还可以和动词连用,而fairly 和pretty没有这些用法。如:   That is quite / rather a surprising result. =That is a quite / rather surprising result. 那是一个相当惊人的结果。   I rather / quite like to go for a walk after supper. 我颇喜欢在晚饭后出去散步。   3. 只有rather可以修饰比较级,还可和too连用。如:   This computer is rather more expensive than that one.这部电脑比那部昂贵一些。   This book is rather too difficult for the beginners.这部书对初学者来说太难了。   四、rather than 的用法。   rather 不仅是一个表示程度的副词,还能用来表示选择,意为"而非;(与其……)倒不如"。rather than 经常用在"平行结构"里,即连接两个对等成分。   I"d prefer to go in August rather than July. 我愿八月去,不愿七月去。   I"d call her hair chestnut rather than brown. 我宁愿说她的头发是栗色,而不是棕色。   We ought to invest in new machines rather than buildings. 我们应该在新的机器上而不是在房屋上投资。   I decided to write rather than telephone. 我决定写信而不打电话。   Rather than get money in such a dishonest way, he would beg in the streets. 他宁愿在街上乞讨,也不愿以这种不正当的手段挣钱。   I always prefer starting early, rather than leaving everything to the last minute. 我总是愿意早开始而不愿意把所有事情都留到最后。
2023-07-24 09:55:271

or有几种意思?都是什么意思,有“和”的意思吗?如果有,那“我没有兄弟和姐妹”可以用or么?为什么

有 ,可以,因为是否定句
2023-07-24 09:55:373

丽水学院少数民族班汉族可以报吗

不可以。丽水学院少数民族班的招生条件是考生为少数民族,分数达到各专业的报考分数。汉族学生是不被允许报名参加民族班的,因为民族班的设立初衷是为了促进少数民族的发展和保护他们的权益。丽水学院位于浙江省丽水市,由丽水市人民政府组织,是丽水市最高院校和唯一的本科院校,是浙江省公立全日制本科院校。宁波大学、浙江农林大学、杭州师范大学等由浙江理工大学牵头,共同参与,帮助丽水学院。2019年1月,浙江省教育厅确定为第二批省级应用型建设试点示范学校。
2023-07-24 09:55:041

在cad中当图形使用erase命令删除后使用什么命令可以恢复

图形删除后什么操作都没有,可以ctrl+z撤销上一步命令,如果删除后重新绘制图形了但是还没有保存可以用命令oops,可以恢复之前删除的图形
2023-07-24 09:55:051

竞技联盟德州sohoo通行证怎么升级快

可以通过完成游戏任务提升通行证等级。lolTOC2通行证等级提高方法:TOC2任务-召唤师可以通过完成游戏任务提升通行证等级,满级150级:每升1级需要10个积分,召唤师也可付费直接购买等级。
2023-07-24 09:55:071

980TBF是什么钢材

TBF钢(TRIP Aided Bainitic Ferrite steels),中文译名为相变诱导塑性铁贝氏体素体钢。也称为Carbide-free bainitic steels(无碳化物贝氏体钢),TRIP with bainitic matrix(贝氏体基相变诱导塑性钢)或super-bainitic TRIP(超级贝氏体基相变诱导塑性钢)。980是指抗拉强度大于980MPa供参考
2023-07-24 09:55:081

my english study为题写一篇作文

2023-07-24 09:54:593

如何提高GSM网络的频率利用率

【摘要】本文首先对GSM网络的无线利用率指标展开论述,包括其定义、性能指标的取值分析,并针对该项指标中的不利因素提出整改思路。作为无线网络优化的一个重要指标,无线利用率在基站的频率规划和容量设计中起到很重要的作用,是首要考虑的因素。系统无线利用率受多方面因素的影响,这些因素的共同作用,也给无线利用率的分析带来更大的复杂性。为此我们对无线利用率问题展开详细讨论。在此基础上,本文最后提出了拆闲补忙的优化思路。【关键词】无线利用率,拥塞率、业务突发性、拆闲补忙、小区优化1、 前言在GSM现网运行中,随着2G数据业务持续快速增长,语音资源收到挤压,2G网络受数据业务增长带来的容量和质量问题依然比较突出,在此背景下,深入分析GSM无线网络的各项指标对资源配置的影响,提出有针对性的网络资源配置优化策略和具体措施,是必要的也是及时的。2、GSM现网无线利用率指标及其整改思路2.1 指标定义无线利用率=(忙时语音话务量+忙时数据等效话务量)/(总业务信道数×K)×100%。2.2 无线利用率的影响因素系统无线利用率受多方面因素的影响,如小区载频配置、拥塞率、业务发生不均衡性、业务突发性等,这些因素的共同作用,也给无线利用率的分析带来更大的复杂性。2.2.1 载频配置小区载频配置不同,其无线利用率也各异,小区的话务承载能力也由此受到影响。下图展示的是不同载频配置下的小区每线话务量,由图可见,小区每线话务容量随着载频配置递增。但随着载频的增加,小区每线话务容量的递增速度减慢,逐渐趋于平稳。从这里分析可知,3载频以下的小区,对每线话务量的影响更明显,这些小区相比其他载频配置的小区,其对无线利用率的影响最突出。图1 不同载频配置下的小区每线话务量2.2.2 拥塞率有大量的文献表明,无线利用率与小区拥塞率之间的相关性表现指数分布曲线。不同的载频配置、不同的站址及用户位置、具体用户行为等,都对这种分布曲线有直接或间接的影响,从而导致分布曲线的具体形状各异。2.2.3 业务发生不均衡性GSM无线网各小区的业务承载峰值并不总是在同一时段出现的,它与各小区的实际所在地区、以及当地的用户习惯等因素有关。正是这些复杂的因素,导致各小区的业务发生存在着不均衡性。而这样的不均衡性,使得忙时无线利用率的统计值与各小区简单累加得到理论利用率的结果存在着较大差异。由于这个差异的存在,无线利用率评估标准需向下进行一些调整,具体调整幅度,与上述差异的大小有关。2.2.4 业务突发性小区的业务发生,在各小区具体因素的作用下,具有随机性。这些因素主要有两大类:一是空间因素,体现在站址所在地区、当地用户习惯、用户行为等;二是时间因素,体现在一天内的不同时间段、一周内的工作日或休息日、重要节假日、旅游淡旺季、突发事件等。为保证足够容量以应对话务高峰需求,小区配置按高峰话务需求进行设计,并预留一定的冗余。正因为冗余的存在,相比话务高峰时段,平时的无线利用率显著降低。3、无线利用率的影响分析从无线利用率的定义可以看出,对于一个满配容量已确定的系统,其无线利用率主要由该系统忙时话务量决定。作为无线网络优化的一个重要指标,无线利用率在基站的频率规划和容量设计中起到很重要的作用,是首要考虑的因素。从前章的分析知,系统无线利用率受多方面因素的共同影响,但同时也影响着其他指标,在这里我们进一步展开论述。3.1 无线利用率对其他指标的影响3.1.1对高质差小区的影响下表是浙江移动GSM网2013年11月某周全网高质差高干扰小区占比与无线利用率之间关系的统计分析。由统计数据可知,无线利用率的逐步上升,语音高质差小区比例并未随着利用率提高而呈现恶化趋势。高干扰小区占比在利用率在超过80%后数量增多,最高占比达到3%左右,大于140%后由于超高利用率小区样本数量较少而下降。表1 无线利用率对高质差小区的影响3.1.2对数据业务类性能指标的影响下表是浙江移动GSM网2013年11月某周全网TBF建立成功率、掉线率、拥塞率、GPRS接入失败率、PS全程成功率等项指标与无线利用率之间关系的统计分析。由统计数据可见,当无线利用率在20%-100%区域中变化时,TBF建立成功率,TBF掉话率、PS全程接通率等指标平稳波动,并未随着网络利用率上升而呈现恶化趋势。当无线利用率在大于100%后,各项指标均有不同程度的劣化,尤其TBF拥塞率增幅明显,趋近0.45%,但远低于网络安全门限。表2 无线利用率对数据业务类性能指标的影响3.1.3对数据业务用户感知的影响下表是浙江移动GSM网2013年11月某周全网PDCH下行复用度、每用户下行带宽、用户平均速率与无线利用率之间关系的统计分析。由数据可见,无线利用率逐渐提高时,下行用户平均速率没有明显的变化,PDCH复用度随着利用率的提高不断增大。无线利用率逐渐提高时,每用户下行平均带宽呈下降趋势,但降幅不大,最低约为11.71kbps。表3 无线利用率对数据业务用户感知的影响3.2 无线利用率对数据业务、语音业务质量影响由于语音业务优先占用的原因,语音业务受利用率的影响相对较小,当利用率小于80%时语音接通率、呼建成功率、掉话率、TCH拥塞率、半速率比例等均无明显变化。当无线利用率大于80%时, TCH和SDCCH拥塞率、高干扰小区开始出现,当利用率大于100%以后,随着利用率升高劣化趋势加快。对于数据业务:当无线利用率小于100%时,数据业务各项相关指标无明显的变化。当无线利用率大于100%时,数据业务各项相关指标PS全程成功率、GRPS接入失败率、TBF建立成功率、TBF拥塞率、上行TBF掉线率劣化趋势明显。 4、拆闲补忙,提升资源效率4.1 基本原则按照语音优先原则,减容业务量时段选取周语音最忙时对应的语音话务量和数据等效话务量。扩容取全天语音话务最忙1个小时的一周平均。根据扩容无线利用率计算结果,以不同的负荷门限设定“提示”(无线利用率≥70%)、“一般”(无线利用率≥80%)、“紧急”(无线利用率≥90%)三个预警级别,对紧急预警高负荷小区进行重点监控和优化调整,对“一般”和“提示”预警小区可优化空间大(周边小区业务分担,双频均衡,扩容等)的区域也可以优先分析调整。4.2 拆闲补忙流程容量优化调整时优先考虑共址小区均衡,均衡后无线利用率仍然超限小区安排扩容,扩容后避免小区高配。减容前应提前完成参数调整,实现减容前的话务分担和均衡,避免因减容导致网络出现严重的话务拥塞。下图是基于无线利用率的拆闲补忙实施流程。图2 基于无线利用率的拆闲补忙实施流程4.3 高利用率小区优化针对高利用率小区,结合具体情况分步骤进行优化调整,确实存在容量不足的予以考虑通过扩容、规划新站增加容量的方式解决。具体解决措施,可参考以下优先级:优先级一:采取话务均衡措施。主要针对区域内小区间负荷不均衡,尤其是共址双频网负荷不均衡的情形;优先级二:适当限制PDCH最大占比,提高PDCH复用度。主要针对语音数据不均衡、数据业务占比过高,但PDCH复用度小的情形;优先级三:进行小区扩容。主要针对容量不足但配置小的情形;优先级四:采用小区分裂或规划方式解决。主要针对容量不足且配置大的情形。针对区域容量不均衡,可依据高利用率小区所在1000米栅格整体利用率情况进行综合分析。对其所在栅格整体利用率低于80%的高利用率小区,建议优先进行业务均衡。对双高(高利用率小区且所在栅格利用率高)的小区,优先考虑扩容、规划新站,通过增加区域容量方式解决。以下为浙江某地区的站点小区和栅格利用率实例,该例中的绿色栅格涉及3个定向三小区站点site1、site2、site3。下表针对site1的第一小区、site2的第1一小区、site3的第二小区的利用率进行栅格分析。下为高无线利用率小区Site2_1和所在栅格同时段无线利用率示意图。图3 站点小区和栅格利用率实例5、结语对GSM网络新增站点的规划建设,以及对现网的扩容、优化等,必须利用科学手段,精确预测需求,从而在保证GSM网络品质和优势的前提下进一步确保投资的长期性和有效性。在需求预测上,为了更好地进行资源优化与控制,我们要有章可循地配置小区,提升资源效率,节省成本,确保网络可靠性。在对现网的优化过程中,合理运动影响无线利用率的因素,使无线利用率向着有利于资源配置的方向发展。同时尽量避免利用率对高质差小区、用户感知度、业务质量等项指标上带来的消极影响,在不同时段、不同地点合理分配网络资源,做好拆闲补忙、提升网络资源效率。
2023-07-24 09:54:591

翻译以下按键中文意思1、play/stop 2、rec/pause 3、erase 4、vol 5、mode 6、search

1 播放/停止 2 录制/暂停3 擦除4 音量5 模式6 搜索
2023-07-24 09:54:584