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should have done 的用法

should have done 的用法
should have done 的用法

should have done 的用法

1.should用于表示惊奇和欣喜的句子中,表示“竟然”、“居然”等含义

1). Why should the door be locked?为什么居然把门锁起来了?

2). It is wonderful that you should have achieved so much in these years. 这几年中你们竟然取得如此大的成就,真了不起!(注意这里主语从句内出现时间状语in these years,一般要求用现在完成时,而使用should是为了表示惊异、赞叹意味。

2.should have done 表示竟然做了某事,体现说话者一种惊奇、惊讶、不相信的语气:

The painting considered to have been copied should have won the prize.

那副被认为是复制品的画竟然获得了大奖。

3.should have done 还可以表示“本来应该做某事而实际上没有做”

You should have finished your homework earlier, but you didn't。

注意:

should have done只用于谈论过去情况,主要有两个用法:一是用于推测过去已经发生的情况,二是用于指本该发生而实际上未发生的情况。如:

You should have told me so before. 你早就应该告诉我。

He should have arrived by now. 此时他本该到了。

Look at the time! We should have been at the theatre ten minutes ago. 瞧都什么时候了! 十分钟前我们就该到戏院了。

附:有关should的用法:

一、作shall的过去式,多用于间接引语中,表示“提议、探询、许诺、要求、命令、决定、必要”等。

1. She asked me if she should open the window.

2. She said she should buy me a dictionary.

3. Should I type these letters for you?(提议、探询)

二、用于虚拟语气中,作虚拟语气的标志词。

1. We should never have built the bridge without your help.(与过去相反)

2. If it should rain tomorrow, I wouldn’t go out.(与将来相反)

3. She insisted that we (should) stay.

4. His order is that we (should) do that at once.

三、表示“推断”,作“可能、应该、会是”等。

1.Let me know if you should hear some more news?

2. I told Sally to fix him up with his job, but perhaps I should have written it out for her.

3. I felt sure that we should meet again.

4. The effect of tax should be felt in higher prices.

四、表示“应该、应当”,比must预期稍弱,同义词为ought to。

1. Everyone should know some first aid.

2. You shouldn’t move if you are badly hurt.

3. Elder brothers should take care of their younger brothers and sisters.

五、表示客气和委婉的语气。

1. I would be very grateful if you should let me know about it.

2. I should say that you have done much to me.

六、表示“责备”或“后悔”。

1. I was really anxious about you. You shouldn’t have left home without a word.(责备)

2. I shouldn’t have said such a thing.(后悔)

七、表示“吃惊”,作“居然、竟然、不以为然”讲。

1. Why should any object to her enjoying herself?

2. I can’t think why he should have been so angry.

3. When I was going out of the store, who should I meet but my former classmate!

4. How should I know?

八、用于一些固定结构中。

1. I should…如果我是你, 我就会……

2. I should like…我想……(做某事)

3. I should have thought…我还以为……(表示惊奇)

4. I should think…. 我看(想)……

(完整版)wouldshouldcouldhavedone用法和区别

would/could/might/should have done等 用法和区别 一、在虚拟语气中的用法(情态动词都是过去时态!) 1. should have done:原本应该做某事,(否)shouldn't have done :原本不该做某事 2. ought to have done 原本应该做某事,(否) oughtn't to have done :原本不该做某事 注意: ought to do 语气更强,常用于长辈对小辈的用语或某规则上的要求(严格的规则应用must ). should do 可用语平辈朋友间,较为客气与口语化 3. need have done 原有必要做某事 (否) needn't have done 原本没必要做某事 注意:做情态动词,need的过去式仍然是need;做实意动词,need 的过去式是needed. 4.could have done 原本能够做某事 注意: couldn't have done 无虚拟语气的用法,只表推测,相当于 can't have done:过去不可能做了某事 5.might have done 原本可以做某事 注意: might not have done 无虚拟语气的用法,只表推测,相当于 may not have done:过去可能没有做某事

6.would have done原本会做某事 1. I would have told you all about the boy's story, but you didn't ask me. 二、对过去事情表推测的用法(情态动词用原型或过去式都可以,只是在说话者看来,可能性大小稍微有所不同而已) 1. must have done:过去肯定做了某事。不存在 mustn't have done 的形式。其否定或疑问形式须用 can(could)have done:“不可能做过某事”来表示: Since the road is wet, it must have rained last night. 既然路是湿的,那昨天晚上肯定下雨了。 He can't/couldn`t have missed the way. I drew him a map. 他不可能迷路。我(当时)给他画了张图。 “The dictionary has disappeared. Who could/can have taken it?”词典不见了,(过去)谁可能把它拿走了? 2. may / might have done may / might have done:过去可能做了某事,may 比 might 表示可能性稍大些。 may/might not have done过去可能没有做某事: I can't find my keys. I may / might have left them at the school yesterday. 我找不到我的钥匙了。我可能昨天把他们落在学校了。 John may/might not have passed the exam; he looks very sad. 约翰可能没有通过考试。他看起来很忧伤。

should 用法讲与

should 用法讲与练 should 一词在中学英语课本中出现频率很高。它的用法灵活、含义丰富,因而一直是历年中考关注的热点。现将其具体用法分述如下: 一 . should 作为助动词shall 的过去式,可以在间接引语中与第一人称主语搭配,表示过去将来时间。例如: The group leader announced that we should (= would )begin to work soon. 小组长宣布:我们不久就开始工作。 A week ago,I told him that I should (= would)go to Beijing the next day. 一个星期以前,我告诉他我第二天就去北京。 二 . should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和ought to,be supposed to 互换使用。例如: You should (= are supposed to )complete your test in time. 你们应该按时做完你们的实验。 You should (= ought to )tell your mother about it at once. 你应该立即把此事告诉你妈妈。 In sum,theory should be combined with practice. 总之,理论应该与实验相结合。 三 . should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将should 置于从句之首,即将should 放在主语前面,而省略从属连词if .例如: If you should fail to come,ask Mrs Chen to work in your place. (= Should you fail to come,ask Mrs Chen to work in your place. )万一你来不了,就叫陈夫人代替你。 If anyone should come,say I am not at home. (= Should anyone come,say I am not at home. )万一有人来访,就说我不在家。 If it should rain tomorrow,I wouldn't go. (= Should it rain tomorrow,I wouldn't go.) 万一明天天下雨,我就不去了。 四 . should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。

(完整word版)should用法归纳与练习had better

should用法归纳 一、Should 表示义务、责任、常译为“应当”,“应该”,或表示一种 估计的情况,译成“按理应当”,“估计......”。 Why should I pay him? 为什么我该付给他钱? They should be there by now,I think. 我估计,他们现在到那儿了。 二、用于成语中I should like to......“我想(做)......” I should like to ask the teacher a question. 我想问老师一个问题。 三、shouldn’t :不应该(表示责备);应该不,应该没有(表示推测)。如: You shouldn't be so lazy.你不应该这么懒惰。 There shouldn't be any problem with your listening.你的听力应该没有问题了。 用should 或shouldn't 填空。 1. All of us ________study hard and learn English well. 2. As a student, you_______ eat in class. 3. You _______speak to your parents like this ,you must be polite (有礼貌) 4. You __________eat less and take more exercise if want ot be healthier and stronger.

5. My mother is very tired after work, I________ do some housework for her. had better(常简略为'd better)是一固定词组,had better"最好",用于表示对别人的劝告、建议或表示一种愿望。其用法有以下几点: 一、had better后面必须跟动词原形。 had better后跟动词原形(即不带to的不定式),构成had better do sth.句型。 这里的had不能用have来替换。如: You'd better go to hospital at once.你最好立即去医院看病。 Tom, you'd better go there today.汤姆,你最好今天去那儿。 二、主语不论是第几人称,句子不论是什么时态,都要用had better 的形式。如: Now you(he,we) had better listen to the teacher.你(他,我们)现在最好听老师讲。 三、had better的否定式。如: 常用的否定形式是将否定副词not直接放在had better的后面。如:You had better not miss the last bus.你最好不要错过末班公

情态动词表推测用法总结及专项练习

情态动词表推测用法总结及专项练习 1.can / could用于表推测的用法 (1) 从使用句型上看,can 通常只用于否定句或疑问句,一般不用于肯定句,而could 可用于肯定句、否定句和疑问句。两者没有时间上的差别,只是could 比can 更委婉,更不确定。如:It can’t [couldn’t] be true. 那不可能是真的。 What can [could] they be doing? 他们会在干什么呢? We could go there this summer. 今年夏天我们可能要去那儿。 注:can 有时也用于肯定句中表示推测,主要用于表示理论上的可能性(即从理论上看是可能的,但实际未必会发生),或表示“有时”之意。如: Even experienced teachers can make mistakes. 即使是有经验的教师也可能出错。 She can be very unpleasant. 她有时很令人讨厌。 (2) 从时间关系看,对现在或将来情况作推测,后接动词原形;对正在进行的情况作推测,后接be doing 结构;对过去情况作推测,后接动词完成式。如: He could have gone home. 他可能已经回家了。 He can’t [couldn’t] have understood. 他不可能理解了。

Why does he know this? Can [Could] someone have told him about it? 他怎么知道? 会是哪个人告诉他了吗? (3) “could+完成式”除表示对过去的推测外,还有以下重要用法: ①表示过去没有实现的可能性,常译为“本来可以”。如: I could have lent you the money.Why didn’t you ask me? 我本来可以借这笔钱给你的。你为什么不向我提出? ②用来委婉地责备某人过去应该做某事而没有去做,常译为“本来应该”。如: You could have helped him. 你本来应该帮助他的。 ③表示“差点儿就要”。如: I could have died laughing. 我差点儿笑死了。 2. may / might用于表推测的用法 表示推测,两者都可用,只是might 比may 语气更不确定,表示的可能性更小。 (1) 在句型使用方面:两者均可用于肯定句和否定句,但用于疑问句时,may通常不用于句首,但可用于疑问句的句中(如特殊疑问句等),而might尽管可以用于疑问句的句首,但不算普通,通常会改用其他句式(如用could等)。如: He may [might] know the answer. 他可能知道答案。

could have done 用法

could have done 用法 1.表示主观猜测:即对已经发生动作或已经存在的状态作出主观上的猜测,通常可译为“可能(已经)”,有时需根据具体语境来翻译。如: Tom could have taken the money; he was here alone yesterday. 有可能是汤姆把钱拿走了,昨天他单独一个人在这里呆过。 We knew he couldn’t have paid for it, because he had no money. 我们知道不可能是他付了这笔钱,因为他没钱。 该用法也可将could换成can,但这只限于否定句和疑问句,因为can表推测时不用于肯定句(而could 可以用于肯定句)。如: Can he have left already? 他会已经离开了吗? They can’t have gone out because the light’s on. 他们不可能出去了,因为灯还亮着。 2.表示未曾实现的能力:即表示过去本来有能力可以做某事的,但实际上没有那样去做,通常译为“本来可以”“本来能力”等。如: The worst of it is that I could have prevented the accident. 最糟糕的是我本来可以防止这次事故的。 I could have passed my examination easily but I made too many stupid mistakes. 我本可以轻易通过考试,但我犯了太多不该犯的错误。 有时用于反语。如: You’ve broken my pen—thanks for nothing, I could have done that for myself. 你把我的笔给弄坏了—— 你得了吧,就那我自己也会弄。 3.表示未实现的可能性:即表示过去本来可能发生情况,而实际上没有发生,通常译为“本来可以”“本来可能”等。如: She could have been seriously injured. 她本来可能伤得很重的。 It’s difficult enough, but it could have been worse. 这事情够困难的了,本来可能会更糟呢。 有时也可根据语境译为“好在没有”“差点”,尤其是当谈论的是“不好”的情况时。如: She felt miserable. She could have cried. 她感到很痛苦,她差点哭了。 Why did you throw the bottle out of the window? Somebody could have been hurt. 你为什么把瓶子扔出窗外呢?好在没有砸伤人。 4.表示未曾实现的想法:即表示过去本来有做某事的打算或意图,但实际上没有实现,通常译为“本来可以”。如: I could have lent you the money. Why didn’t you ask me? 我本来可以借这笔钱给你的。你为什么不向我提出? I could have given you some hints, but I suppose you thought yourself too grand. 我本可以给你点提示的,但是我认为你太自负了。 5.表示未曾实现的选择:即表示过去本来可以有机会选择做某事,但实际上没有那样做,通常译为“本来可以”。如: You needn’t have typed it twice. You could have used a carbon. 你没必要打两遍的,你当时本可以用复写纸打。 You needn’t have walked up; you could have taken the lift. 你没必要走着上去,你本来可以乘电梯的。 6.表示批评或责备:即表示过去本来有责任或义务应该做某事的,但实际上却没有做成,含有批评和责备的意味,通常译为“本来应该”“本来可以”等。如: You could have started a little earlier. 你本可早点动身的。 You could have helped me—why did you just sit and watch? 你本来可以帮我一把嘛——为什么你只是坐在那儿观望呢? 7.表示可能达到的极限:表示即使人们尽力而为去做某事,但还是未能做成,通常用于否定句。如: I couldn’t have won, so I didn’t go in for the race. 反正我也赢不了,所以我就没有参加赛跑。

情态动词should的用法

情态动词should的用法 情态动词should和can ,may ,must一样,没有人称和数的变化,有词意,但都不能单独作谓语,必须和后面的动词原形一起构成谓语。基本意思是“应当,应该”,常用来表示建议或命令等。如: You should work harder. 你应该更努力地工作。 否定式和疑问式的构成与can ,may ,must一样。如: You shouldn’t play soccer in the street.你们不应该在街上踢足球。 Who should pay the taxi driver? 谁应该付出租车钱? 注意: 常用句型You should /shouldn’t do sth 表示“建议某人(不)做某事”。其他表示“建议”的句型还有:Why not do sth? /Why don’t you do sth? /How about doing sth? /What about doing sth? /It’s a good idea to do sth /You’d better do sth等。 should作为情态动词用,常常表示意外、惊奇、不能理解等,有“竟会”的意思,例如: How should I know? 我怎么知道? Why should you be so late today? 你今天为什么来得这么晚? should有时表示应当做或发生的事,例如: We should help each other.我们应当互相帮助。 我们在使用时要注意以下几点: 1. 用于表示“应该”或“不应该”的概念。此时常指长辈教导或责备晚辈。例如: You should be here with clean hands. 你应该把手洗干净了再来。 2. 用于提出意见劝导别人。例如: You should go to the doctor if you feel ill. 如果你感觉不舒服,你最好去看医生。 3. 用于表示可能性。should的这一用法是考试中常常出现的考点之一。例如: We should arrive by supper time. 我们在晚饭前就能到了。 She should be here any moment. 她随时都可能来。 1. We _________ keep the new traffic law(交通法). A. may B. should C. can D. need 2.I’d like to buy a new shirt , but I don’t know __________ . A. where could buy it B. I should take which C. which I should take D. where can I get it 写出同义表达 Why not have a rest? (1) Why _______ ________ have a rest? (2) You’d _________ _________ a rest. (3) You _______ ________ a rest. (4) ________ _________ having a rest?

should用法归纳与练习hbetter

s h o u l d用法归纳与练习 h b e t t e r 集团企业公司编码:(LL3698-KKI1269-TM2483-LUI12689-ITT289-

should用法归纳 一、Should表示义务、责任、常译为“应当”,“应该”,或表示一种估计的情况,译成“按 理应当”,“估计......”。 WhyshouldIpayhim为什么我该付给他钱 Theyshouldbetherebynow,Ithink.我估计,他们现在到那儿了。 二、用于成语中Ishouldliketo......“我想(做)......” Ishouldliketoasktheteacheraquestion.我想问老师一个问题。 三、shouldn’t:不应该(表示责备);应该不,应该没有(表示推测)。如: Youshouldn'tbesolazy.你不应该这么懒惰。 Thereshouldn'tbeanyproblemwithyourlistening.你的听力应该没有问题了。 用should或shouldn't填空。 1.Allofus________studyhardandlearnEnglishwell. 2.Asastudent,you_______eatinclass. 3.You_______speaktoyourparentslikethis,youmustbepolite(有礼貌) 4.You__________eatlessandtakemoreexerciseifwantotbehealthierandstronger. 5.Mymotherisverytiredafterwork,I________dosomehouseworkforher. hadbetter(常简略为'dbetter)是一固定词组,hadbetter"最好",用于表示对别人的劝告、建议或表示一种愿望。其用法有以下几点: 一、hadbetter后面必须跟动词原形。 hadbetter后跟动词原形(即不带to的不定式),构成hadbetterdosth.句型。 这里的had不能用have来替换。如: You'dbettergotohospitalatonce.你最好立即去医院看病。

最新小升初英语语法零基础 can have done用法小结

小升初英语语法零基础:can have done用法小结 can have done can have done 通常只用于否定句和疑问句。用于否定句时表否定推断,推测肯定没做;用于疑问句时意为“难道真的做了吗”,表示怀疑。例如: Can he have done such a foolish thing? (= Is it possible …?) 他会做这样的傻事吗?(表怀疑) He can't have taken it home. 他不可能把它带回家了。(表不可能) could have done could have done 可用于肯定句、疑问句和否定句。用于肯定句既可以表示过去能够做而实际未做,有惋惜、遗憾或委婉批评之意,也可以表示对过去动作的推测;用于否定句和疑问句的情况与can have done 相同。例如: You could have done better, but you didn't try your best. 你本可以做得更好,但是你没有尽力而为。(表惋惜) This glass is cracked. Someone could have dropped it. 这个玻璃杯破了。可能是谁把它掉在地上了。(表推测过去) Could he have left the work unfinished?

他会丢下工作不干了?(表怀疑) He couldn't have checked out so early. 他不可能这么早就离开了。(表不可能) 注意:can't have done 的语气比 couldn't have done 要强一些。例如:He can't have been to that town. 他根本不可能去过那座城市。(语气略强) The measurement couldn't have been wrong. 测量不可能出错了吧。(语气稍弱)

英语中should的用法归纳

英语中should的用法归纳 一、Should 表示过去将来时,即从过去观点看将来要发生的是,多用于间接引语中。 We thought that we should never see you again. 我们想我们再也看不到你了。 The BBC weather report this morning said that we should have rain.今天早上,BBC电台天气报告说,今天有雨。 二、Should 表示义务、责任、常译为“应当”,“应该”,或表示一种估计的情况,译成“按理应当”,“估计......”。 Why should I pay him?为什么我该付给他钱? They should be there by now,I think. 我估计,他们现在到那儿了。 Should 用于完成时态,表示对过去发生的动作的一种推测,译成“应该已经......”。

You should have washed the wood. (But you haven't.)你应该把伤口清洗了。(然而你没有) 三、Should 用于虚拟语气中。 (1)用于It is necessary (important,strange.。。that.。。)中,在美国英语中should 常省去。 It is important that we (should)learn English well. 我们学好英语很重要。 (2)用于It is ordered (suggested)that.。。中,而在美语中should常省去。 It is decided that we (should)finish our work in a week.决定我们要在一周之内完成我们的工作。 (3)用于表示命令、请求、建议、决定等词后面的宾语从句中,在美国英语中should常省去。 He wrote,suggesting that Mr. Wang (should)come to Beijing. 他信中建议王先生到北京来。 The commander ordered that the city (should)be taken in five days.司令员下令必须在五天之内占领这座城市。 (4)should用于表示命令、请求、建议、决定等词后面的表语从句,同位语从句中,在美国英语中should 常省去。

不定式完成式to have done用法

情态动词+have done用法 1. Something may have happened to her. 她可能发生了什么事情。 She might have had an accident. 她或许遭受了意外. So she must have taken that too. 因此,她肯定把它也带走了。 1) 这三句话都用了“情态动词+不定式的完成时”,表示对发生过的事作某种猜测、推测。 (1) must have done 可用来对某件过去的事情作肯定推测,表示“一定已经,想必已经”做过某事,用于肯定的陈述句中。否定句中用can't have done。 She must have received the parcel, I sent it by registered post. 她一定已经收到包裹了,我是用挂号寄的。 (2) may have done, might have done, could have done “可能做过某事”,就语气而言could have done 所表的可能性更小些。 He may / might / could have left by nine. 他可能于九点前已离去。 (3) should have done / ought to have done表示“本该做某事”但实际未做。 I should / ought to have left London before nine but I didn't. 我本该在九点以前离开伦敦,但是我没有。 (4) shouldn't have done / oughtn't to have done 表示“本不该做事”,但实际上又做了。 He shouldn't / oughtn't to have left London before nine but he did. 他本不该在九点前离开伦敦,但是他离开了。 (5) can't / couldn't have done 表否定推测,“不可能做过某事”。 She can't / couldn't have gone to bed, for the light in her room is still on. 她不可能上床睡觉了,因为她房间的灯还亮着。 (6) could have done 可表示客观上“本来能做某事但实际上没做”。 He could have finished the work in time but he didn't work hard. 他本来可以按时干完活的,但他没有卖力。 (7) needn't have done 表示客观上“本不必做某事但实际上又做了”。 I needn't have gone to the office yesterday (but I went there). 昨天我没必要去办公室(但我却去了)。 (8) might have done 还可表示过去“本可能发生但实际上没有发生的动作”。用于表示说话人对已发生的事提出批评或意见。 He might have given more help, even though he was very busy. 即使他很忙,也可以多帮点忙。 情态动词+ 动词完成式即“情态动词+ 动词完成式即“情态动词+ have + done”,表示对过去行为或动作进行推测、评论或判断。这个结构是近几年高考情态动词的重点和难点。 一、在虚拟语气中的用法 1. should have done 表示“过去本应该做某事却未做。”其否定结构shouldn't have done 表示“过去本不该做某事却做了。” 2. ought to have done 表示“过去本应该做某事却未做。”其否定结构oughtn't to have done 表示“过去本不该做某事却做了。” 3. need have done 表示“过去本有必要做某事却未做。”其否定结构needn't have done 表示

最新shall和should的用法

1. shall在疑问句中的用法。在疑问句中用于征求对方意见,主要用于第一人称(在英国英语中,也用于第三人称),其意为“要不要”、“…好吗”:Shall I get you a chair for you? 要不要我给你拿把椅子来?What shall we do this evening? 我们今天晚上做什么呢?Shall the boy come at once? 要不要这孩子马上来? 2. shall在陈述句中的用法。在陈述句表示说话者的允诺、告诫、威胁、命令、规定、必然性等,主要用于第二、三人称:You shall suffer for this. 你会为此事吃苦头的。(表威胁)That day shall come.那一天一定会来。That day shall come(表必然性)Tell him that he shall have the book tomorrow. 告诉他这本书明天给他。(表允诺)Persons under 18 shall not be employed in night work.不满十八岁的人不得雇佣干夜间工作。(表规定)【注】有时用于第一人称,表示决心:【注】有时用于第一人称I shall return. 我一定回来。(表示决心) 。 3. should表示义务或责任。其意为““”:We should learn from each other. 我们应该互相帮助。We should help the aged. 我们应该帮助老人。You should pay your debts. 你应该还债。You should pay your debts. 4. should 表示建议或劝告。其意为“应该”:You should give up smoking. 你应该戒烟。You should go and ask your teacher. 你应该去问问老师。【注】有时语气较强,含有命令的意味:You should leave at

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S h o u l d与O u g h t t o 的讲解和练习

Should与Ought to I. 复习 1. Some people can live without meat. 2. May I use the phone please, Mr. White? 3. Could you tell me something about the book? 4. You must not smoke here. 5. What flavor would you like, chocolate or strawberry? 6. We should put rubbish in the bin. 7. She shouldn’t discuss it. 8. Should we discuss it now? / Ought we to discuss it now? -- Yes, we should/ ought to. -- No, we shouldn’t/ ought not to. 9. The students ought not to sleep in the class. 10. Tom ought to hand in his homework on time. II. 二者区别: 时态 Should Ought to 肯定句sb. should do sth. sb. ought to do sth. 否定句sb. should not do sth. sb. ought not to do sth. 一般疑问句Should sb. do sth.? Ought sb. to do sth.? 简略回答 Yes, sb. should do sth. No, sb. should not / shouldn’t do sth. Yes, sb. ought to do sth. No, sb. ought not /oughtn’t to do sth.

should用法归纳与练习

s h o u l d用法归纳与练 习 Company Document number:WTUT-WT88Y-W8BBGB-BWYTT-19998

should用法归纳 一、Should 表示过去将来时,即从过去观点看将来要发生的事,多用于间接引语中。 We thought that we should never see you again. 我们想我们再也看不到你了。 The BBC weather report this morning said that we should have rain. 今天早上,BBC电台天气报告说,今天有雨。 二、Should 表示义务、责任、常译为“应当”,“应该”,或表示一种估计的情况,译成“按理应当”,“估计......”。 Why should I pay him 为什么我该付给他钱 They should be there by now, I think. 我估计,他们现在到那儿了。 Should 用于完成时态,表示对过去发生的动作的一种推测,译成“应该已经......”。 You should have washed the wood. (But you haven‘t.) 你应该把伤口清洗了。(然而你没有) 三、在某些从句中,should 表示惊异、意外等情绪,常译为“竟然”。 It seems unfair that this should happen to me.真不公平,这件事竟然发生在我身上。 四、当陈述部分含有ought to ,其反意疑问句部分,美国英语中用should . She ought to stay here, shouldn't her她该留在这儿,是吗 五、用于成语中I should like to......“我想(做)......” I should like to ask the teacher a question. 我想问老师一个问题。 六、"should (not) +have+过去分词(done)" 对已发生的事表示遗憾或责备,表达"本该或不该"之意。如:①He also learns that he should have cared more about his friends.他还明白了他本应该多关心朋友。 ②He shouldn't have let out the secret.他本不该泄露秘密的。(实际情况是"他已泄密"。) 翻译:①If he were here, 如果他(现在)在这里的话,我就会告诉他真相。(事实是,他现在不在这里。)

should用法归纳及练习

s h o u l d用法归纳及练习 一、Should表示过去将来时,即从过去观点看将来要发生的事,多用于间接引语中。 Wethoughtthatweshouldneverseeyouagain.我们想我们再也看不到你了。 TheBBCweatherreportthismorningsaidthatweshouldhaverain. 今天早上,BBC电台天气报告说,今天有雨。 二、Should表示义务、责任、常译为“应当”,“应该”,或表示一种估计的情况,译成“按理应当”,“估计......”。 WhyshouldIpayhim为什么我该付给他钱 Theyshouldbetherebynow,Ithink.我估计,他们现在到那儿了。 Should用于完成时态,表示对过去发生的动作的一种推测,译成“应该已经......”。 Youshouldhavewashedthewood.(Butyouhaven‘t.)你应该把伤口清洗了。(然而你没有) 三、在某些从句中,should表示惊异、意外等情绪,常译为“竟然”。 Itseemsunfairthatthisshouldhappentome.真不公平,这件事竟然发生在我身上。 四、当陈述部分含有oughtto,其反意疑问句部分,美国英语中用should. Sheoughttostayhere,shouldn'ther她该留在这儿,是吗 五、用于成语中Ishouldliketo......“我想(做)......” Ishouldliketoasktheteacheraquestion.我想问老师一个问题。 六、"should(not)+have+过去分词(done)"对已发生的事表示遗憾或责备,表达"本该或不该"之意。 如:①Healsolear nsthatheshouldhavecaredmoreabouthisfriends.他还明白了他本应该多关心朋友。 ②Heshouldn'thaveletoutthesecret.他本不该泄露秘密的。(实际情况是"他已泄密"。) 翻译:①Ifhewerehere,如果他(现在)在这里的话,我就会告诉他真相。(事实是,他现在不在这里。) ②IfIhadbeenhereyesterday,如果昨天我在这里,我就会好好教训他一顿。(事实是:我没教训他,因为我昨天没在这里。teachsb.agoodlesson教训某人) ③如果没有你的帮助,我就赢不了。(事实是我已经获胜。) 1.Iwasreallyanxiousaboutyou.You_______homewithoutaword.(NMET) A.mustn'tleave B.shouldn'thaveleft C.needn'tleave D.couldn'thaveleft 2.I'mnotfeelingwellinthestomach,I_______somuchfriedchickenjustnow.(上海) A.shouldn'teat B.mustn'thaveeaten C.mustn'teat D.shouldn'thaveeaten 3.We_______lastnight,butwewenttotheconcertinstead.(NMET) A.musthavestudied B.mightstudy C.shouldhavestudied D.wouldstudy 4.ItoldSallyhowtogethere,butperhapsI_______itoutforher.(NMET) A.hadtowrite B.musthavewritten C.shouldhavewritten D.oughttowrite 5.Thatyoungmanhasmadesomuchnoisethathe_______nothavebeenallowedtoattendtheconcert.(上海) A.could B.must C.would D.should 6.It'snearlyseveno'clock.Jack_______behereatanymoment.(NMET) A.must B.need C.should D.can 7.-WhencanIcomeforthephotosIneedthemtomorrowafternoon. -They_______bereadyby12:00.(NMET) A.can B.should C.might D.need 8.Mary_______beinParis,forIsawherinthetownafewminutesago.(NMET) A.mustn't B.can't C.shouldn't D.maynot 9.Ididn'tseeherinthemeetingroomthismorning.She_______havespokenatthemeeting.(MET) A.mustn't B.shouldn't C.needn't D.couldn't

“could +have+过去分词”的10种用法

“could +have+过去分词”的10种用法 一、表示主观猜测 即对已经发生动作或已经存在的状态作出主观上的猜测,通常可译为“可能已经…”,有时需根据具体语境来翻译。如: We could not have heard them because of the noise from the river. 由于有河水声我们不能听见他们的话。 Tom could have taken the money; he was here alone yesterday. 有可能是汤姆把钱拿走了,昨天他单独一个人在这里呆过。 We knew he couldn’t have paid for it, because he had no money. 我们知道不可能是他付了这笔钱,因为他没钱。 【说明】该用法也可将could换成can,但这只限于否定句和疑问句,因为can表推测时不用于肯定句,而could可以用于肯定句。如: Can he have left already? 他会已经离开了吗? They can’t have gone out because the light’s on. 他们不可能出去了,因为灯还亮着。 二、表示未曾实现的能力 即表示过去本来有能力可以做某事的,但实际上没有那样去做,通常译为“本来可以、本来能够”等。如: The worst of it is that I could have prevented the accident. 最糟糕的是我本来可以防止这次事故的。 We could have got in for nothing—nobody was collecting tickets. 我们本可以不买票就进去—根本没人收票。 I could have passed my examination easily but I made too many stupid mistakes. 我本可以轻易通过考试,但我犯了太多不该犯的错误。 有时用于反语中。如: You’ve broken my pen—thanks for nothing, I could have done that for myself. 你把我的笔给弄坏了——你得了吧,就那我自己也会弄。 三、表示未曾实现的可能性 即表示过去本来可能发生的情况,而实际上没有发生,通常译为“本来可以、本来可能”

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