高考情态动词用法
“superben”通过精心收集，向本站投稿了9篇高考情态动词用法，这次小编给大家整理后的高考情态动词用法，供大家阅读参考，也相信能帮助到您。
篇1：情态动词用法
情态动词用法归纳
一、引言
情态动词主要用来表示说话人的看法、态度等，它在英语中具有很强的灵活性，是英语动词中最难把握的一类。情态动词有很多，每个用法又分很多含义，要真正区分它们非常困难。本文主要介绍了一些常见情态动词的相关用法，并通过举例和对比来深入地了解它们在句子中所扮演的角色，以帮助大家能够从基本的概念到复杂的时态一步一步深入地了解情态动词。
二、情态动词的概念和特点
(一)什么是情态动词?
情态动词(Model Verbs)又称情态助动词(Model Auxiliaries)。英语中的助动词主要有两类：一是基本助动词，如have, do, be;二是情态助动词，如may, must, need等。情态动词与其他动词连用表示说话人的语气。情态动词可表达建议、要求、可能和意愿等。情态动词没有人称和数的变化。
(二)情态动词的特点
1、一般特点
情态动词无人称和数的变化,它后面跟的动词需用原形,否定式构成是在情态动词后面加 “not”。另外还有个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语态。情态动词属非及物动词，故没有被动语态。例如：
①He could be here soon.
他应该很快就来。
②We can't carry the heavy box.
我们搬不动那箱子。
2、引申特点：
除ought和used以外，其他情态动词后面只能接不带to的不定式。如果我们把ought to和used to看作是固定词组的话，那么，所有情态动词无一例外地只能接不带to的不定式。
例如：
①We used to grow beautiful roses.
我们过去常常种植美丽的玫瑰。
②She ought to pass her test.
她应当能通过考试。
三、情态动词的分类和用法
很多情态动词看似区别不大，但他们往往容易相互混淆。因此，仔细研究还是会发现它们之间微妙的差别。以下将从分类和用法来谈一些常用的情态动词。
(一)情态动词的分类
1、只能做情态动词的：must, can (could), may (might)
例①We must leave early.
我们必须及早动身。
例②These difficulties,we can and must overcome.
这些困难我们能够也必须克服。
2、可做情态动词又可做实义动词：need, dare
例①You need not make two copies.One will do.
你不必写两份，一份就行。
例②How dare you say so?
你怎敢这样说?
3、可做情态动词又可做助动词的：shall (should), will (would) , ought to
例①What time shall I come?
我什么时候来?
例②We shall have finished with this tomorrow.
明天这事就会干完。
4、具有情态动词特征的动词短语：have (had,has) to, used to
例①You have to have a visa to go to another country.
你到别国去得有签证。
例②I used to do business with him.
我过去和他常有业务往来。
5、情态动词表猜测：must, would, ought to, may, might
例①You may only borrow books for two weeks.
书你只能借两个星期。
例②I asked if I might go home half an hour earlier today.
我问我是否可以提早半个小时回家。
篇2：情态动词用法
(二)常见情态动词的用法
1、can, could的用法
(1)表示能力(体力、知识、技能)。例如：
①Can you draw the horses?
你会画马吗?
②I could see her though the windows.
从窗口我可以看见她。
(2)表示请求和允许。例如：
①Could I borrow you dictionary?
我可以借一下你的字典吗?
Yes,of course you can.(表示许可，与could对应)
当然可以。
②Could you show me the way?
你可否告诉我怎样去?
(3)表示客观可能性(客观原因形成的能力)。例如：
①They’ve changed the timetable, so we can go by bus instead.
他们改变了时间，所以我们可以乘公交替代。
②He said he could not come.
他说他不能来。
(4)表示推测(惊讶、怀疑、不相信的态度)，用于疑问句、否定句和感叹句中。例如：
①Can this be true?
这是会是真的吗?
②Could you have been waiting so long?
你竟然等了这么久吗?
2、may, might的用法
(1) 表示请求和允许。might比 may语气更委婉，而不是过去式。否定回答时可用can’t 或mustn’t，表示“不可以，禁止”。例如：
①Visitors may not feed the animals
参观者不可以给动物喂食
②He asked if he might use the phone.
他问是否可以借一下电话。
(2) 用于祈使句，表示祝愿。例如：
①May you succeed!
祝你成功!
②Long may she live to enjoy her good fortune.
祝她长寿好运!
(3) 表示推测、可能性(不用于疑问句)。
在通常情况下，may 表示允许(请求允许或给予允许)时，总是针对“现在”或“将来”而言，若要表示已经给予或已经存在的允许，则通常不用may，而用can，例如：
①Nowadays, children can do what they like.
现在小孩子喜欢干什么就可以干什么
②May I borrow your book?
我可以借你的书吗?
3、must, have to的用法
(1) 表示必须、必要。例如：
①You must come in time.
你必须准时到。
②Must we hand in our exercise books today?
我们必须今天交我们的练习吗?
Yes, you must.
是的。你们必须交。
No, you don’t have to / you needn’t.
不，你们不必今天交。
在回答引出的问句时，如果是否定的，不能用mustn’t(禁止，不准)，而用needn’t, don’t have to(不必)。
(2) must是说话人的主观看法， 而have to则强调客观需要。Must只有一般现在时， have to 有更多的时态形式。例如：
①He play isn’t interesting, I really must go now.
他演奏的并不吸引我，我必须现在就想走。
②I had to work when I was your age.
当我是你这个年龄时我不得不工作。
(3) 表示肯定的推测、可能性(只用于肯定的陈述句)例如：
①He must be ill. He looks so pale.
他肯定是病了。他的脸色那么苍白。
②You must be hungry.Have something to eat.
你一定饿了，吃点东西吧。
四、情态动词时态用法
(一)情态动词+行为动词完成式
情态动词+行为动词完成式即“情态动词+ have + v-ed分词”，表示对过去行为或动作进行推测、评论，主要有以下几种形式：
1.、must have v-ed
must have v-ed 表示推测过去某事“一定”发生了。其否定形式为：can’t / couldn’t have v-ed, 表示过去不可能发生某事。例如：
①Since the ditch is full of water, it must have rained last night.
当小沟里都是满满的水，那昨晚一定是下雨了。
②He could not have passed the exam.
他不可能通过了考试。
2、could have v-ed
could have v-ed 表示推测过去某动作“很可能”发生了。例如：
篇3：情态动词用法
①The dictionary has disappeared. Who could have taken it?
这个字典不见了，谁可能拿走了?
②She could not have been more than six then.
那时她不可能超过六岁。
3、may / might have v-ed
may / might have v-ed 表示推测过去某事“也许”发生了.may 比 might 表示的可能性在说话人看来稍大些。例如：
①I can’t find my keys. I may / might have left them at the school yesterday.
我找不到我的钥匙了，也许我昨天把它们丢在学校了。
②She might have gone home.
她或许回家了。
4、ought to / should have v-ed 和 ought not to / shouldn’t have v-ed
ought to / should have v-ed 和 ought not to / shouldn’t have v-ed 用于对已发生的情况表示“责备”、“不满”，分别表示“本应该…”和“本不应该…”。例如：
①With all the work finished, I should have gone to the party last night.
当所有工作完成时，我昨晚本应该去参加派对的。
②He ought not to have kept us waiting so long.
他当时不应该让我们等那么久。
5、needn’t have v-ed
needn’t have v-ed 表示过去做了某事，但没有做的必要， 意为“本没必要…”。例如：
①You needn’t have waken me up I don’t have to go to work today.
你不必喊我起床了，我今天不上班。
②They need not send me a receipt.
他们不必寄给我收条。
(二)情态动词+行为动词进行式
情态动词+行为动词进行式(即情态动词+ be + v-ing形式)，表示推测或评论某动作现在是否正在进行。例如：
①He must be playing basketball.
他现在应该在打篮球。
②You should be reading a textbook.
此刻你应当在看课本。
(三)情态动词+行为动词完成进行式
情态动词+行为动词完成进行式(即情态动词+ have been + v-ing 形式)，表示推测或评论过去某动作是否正在进行或一直在进行。例如：
①They should have been meeting to discuss the problem.
他们应该一直在见面讨论这个问题。
②You must have been thinking of something.
你准是一直在想什么心事。
五、总结
本文举例说明了can和could、may和might以及must和have to等情态动词的概念、特点和用法，并且对其容易混淆的情态动词进行了比较和分析。文章还特别提到了情态动词的时态的用法。情态动词是英语语法中较为重要的语法点，是我们必须要了掌握的知识。
篇4：高考情态动词用法
一．shall和will的用法
1、shall 用在第一、三人称，will 用于第二人称表示“征求意见”。
Shall I go now?
Shall we invite her, too?
Will you help me with the work?
Shall the reporters wait outside or what?
2、shall表示依据规定有义务去做。
Passengers shall not talk with the driver while the bus is moving.
3、shall 用于所有人称，表示说话人的许诺、威胁、警告、命令等。
You shall have an answer by tomorrow.
If he’s good, he shall have a new watch for Christmas.
If you children don’t do as I tell you, you shan’t go to the party.
4、would 可以表示过去的习惯（would 可表示反复发生的动作或某种倾向。used to表示过去的习惯动作或状态，强调现在已不存在）
He would come to see me on Sunday when he was here.
The dog would lie there in the sun all afternoon.
When we were children, we would go skating every winter.
5、will可以表示“愿意”，而非将来:
I will pay you for it. 我会付给你钱买下它的。
Go where you will. 到你愿意去的地方。
We’re going on a climbing trip. Come if you will.
6、will可以表示倾向、习惯（总是会，老是等意思）
Sometimes the cat will lie there all morning.
Oil and water will not mix.
This machine won’t work.
二、can/could 的用法
1、表示具备某种能力。
The nine-year old boy can swim across the river.
Can you swim across the river?
We couldn’t get the truck to start.
2、表示“征询对方意见”和“允许”（could 语气委婉）。回答不用 could.
Can /could I smoke here? Yes, you can. No, you cannot.
Could you tell me where John is?
3、表示“可能性”。（否定句疑问句常见,肯定句也可以）
Can/Could it be true? 那会/可能是真的。
That can’t/couldn’t be true. 那不可能是真的。
Will you answer the phone? It could be your mother.
三．may/might 的用法
1、表示“征询对方意见”和“允许”。
May I turn on the TV?
Yes, of course. Yes, you can/may.
No, you can’t/may not /mustn’t /I’m afraid not.
You may go home now.
2、表示可能性，“也许”。常用于肯定句。
You may/might have some fever. 你也许发烧了。
He said that the news might be true. 他说这消息可能是真的。
They may/might be having a bath. 他们也许正在洗澡。
四．must的用法
1、表示“必须”。
Patients must use medicine according to the doctor’s orders.
2、表示推测，只用于肯定句。在否定句或疑问句中，用can/could：
There must be a mistake.
Can/Could there be a mistake
There can’t/couldn’t be a mistake.
He must be over sixty now.
They must be watching the news now.
They can’t/couldn’t be watching the news now.
3、注意must 的回答：
Must the ladies wear dresses?
yes, they must. No, they don’t have to. / they needn’t.
Can/May I come in? No, you can’t / mustn’t.
4．表示禁止。
Children mustn’t go across the street alone.
五．表示“推测”的表达法总结
（1）表示对现在和将来状况的推测：must 一定，may 可能，might 也许，can’t 不可能。
（2）对已经过去的情况的推测，用“情态动词＋have+ done”结构：
① must have done 过去一定已经…（只用于肯定句中）
② can’t / couldn’t have done 过去不可能--- （表示否定）
③ may/might have done 可能已经----
④ needn’t have done 本来不必做---
⑤ could have done那时本来可以…（在肯定句中，不可用can)
⑥ should have done 本来应该做---（实际未做）
⑦ shouldn’t / oughtn’t to have done 本不应该做-----（实际做了）
例如：
He must have been drinking beer. 他肯定一直喝啤酒来着。
The money can’t have been lost there. 钱不可能是在那儿丢的。
He may have gone to bed. 他可能已经上床睡觉了。
She might not have settled the problem. 她可能尚未解决那个问题。
We could have solved the problem in a more reasonable fashion.
You should have come here ten minutes earlier.
She should / ought to have gone there alone.
六、need的用法
1、作为情态动词，need一般只用于否定句和疑问句中。
You needn’t try to explain. Need we stay here this evening?
2、Need 作为实意动词可用在所有句型中。
She needs to come tomorrow.
You don’t need any help from others. Do they need this?
七、dare的用法
1．做情态动词，通常用于疑问句，否定句和条件状语从句中。
Dare he swim across the river?
He dare not come to see me.
How dare you be so rude! 你竟敢如此无礼！
2．做实意动词：
Do you dare to ask her? 你敢问她吗？
He didn’t dare to go. 他不敢去。
八．should/ought to的用法
两者大多数情况下可以互换。
1、表示道义上的责任，义务或要求，有时表示劝告。如：
You ought to /should pay more attention to what your lawyer says.
This word is spelt wrongly. There should be another “s”.
2. 表示推测和可能性，是“应该”之意。
This pen ought to /should be yours. 这支笔应该是你的。
If the train is up to time, John should/ought to be here any minute now. 如果火车晚点的话，John现在马上就应该到了。
3、表示讲话人惊奇，失望，愤怒等感情：
What’s happened to that money? How should I know? 那些钱怎么了？－我怎么知道？
It’s strange that he should have lost his temper for such trivial things as that. 真奇怪，他竟然为这么小的事情发脾气。
Why should I believe you? 我为什么要相信你？
九．实战演练 （- 05 - 04全国高考真题）
1. We have proved great adventurers, but we have done the greatest march ever made in the past ten years.（06津）
A. needn’t B. may not C. shouldn’tD. mustn’t
2. --- I think I’ll give Bob a ring.
--- You _______. You haven’t been in touch with him for ages.（06苏）
A. will B. may C. have to D. should
3. --- What’s the name?
--- Khulaifi. _______ I spell that for you? （06京）
A. Shall B. Would C. Can D. Might
4.If it were not for the fact that she_______sing, I would invite ber to the party.（06闽）
A.couldn’t B.shouldn’t C.can’t D.might not
5. -- Must he come to sign this paper himself?
-- Yes, he .（06粤）
A. need B. must C. may D. will
6. ______ fired, your health care and other benefits will not be immediately cut off.（06鄂）
A. Would you be B. Should you be C. Could you be D. Might you be
7.Some aspeets of a pilot’s job____ be boring,and prilots often_____ work at inconvenient hours.（06湘）
A.can;have to B.may;can C.have to;may D.ought to;must
8.－These books are too heavy for me to carry.
－.（06辽）
A.You may ask for help B.I’will give you a hand
C.I’will do you a favor D.I’d come to help
9. –May I smoke here ?
-- If you ____, choose a seat in the smoking section.（06鲁）
A. should B.could C. may D. must
10.As you worked late yesterday,you_____ have come this morning.（06陕）
A.mayn’t B.can’t C.mustn’t D.needn’t
11. --- Could I have a word with you, mum?
--- Oh dear, if you ________.（06浙）
A. can B. must C. may D. should
12. We hope that as many people as-possible _______ join us for the picnic tomorrow.（全国一）
A. need B. must C. should D. can
13. There's no light on - they______ be at home.(全国三)
A. can't B. mustn't C. needn't D. shouldn't
14. He __________ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. (05北京卷)
A. should B. must C. wouldn’t D. can’t
15. He paid for a seat, when he ______ have entered free. （05山东卷）
A. could B. would C. must D. need
16. --- I've taken someone else's green sweater by mistake.
--- It ______ Harry's. He always wears green. (05广东卷)
A. has to beB. will be C. mustn't be D. could be
17. - Do you know where David is? I couldn’t find him anywhere.
- Well. He have gone far-his coat’s still here. （05湖北卷）
A．shouldn’t B．mustn’t C．can’t D．wouldn’t
18. If I plan to do anything I wanted to, I’d like to go to Tibet and travel through as much of it as possible. （05湖北卷）
A．would B．could C．had to D．ought to
19. --- Lucy doesn’t mind lending you her dictionary.
--- She ______ . I've already borrowed one. （05湖南卷）
A. can't B. mustn't C. needn't D. shouldn't
20. The more I think about him, the more reasons I find for loving him ___ I did.
（05湖南卷）
A. as much as B. as long as C. as soon as D. as far as
21. - Tom is never late for work. Why is he absent today?
- Something ________ to him. (05江西卷)
A．must happen B．should have happened
C．could have happened D．must have happened
22. John, look at the time. _____ you play the piano at such a late hour? （05全国卷3）
A．Must B．Can C．May D．Need
23. Tom, you leave all your clothes on the floor like this! （05全国卷1）
A．wouldn’t B．mustn’t C．needn’t D．may not
24. There _____ be any difficulty about passing the road test since you have practiced a lot in the driving school. （05上海卷）
A. mustn’t B. shan’t C. shouldn’t D. needn’t
25. The World Wide Web is sometimes jokingly called the World Wide Wait because it _________be very slow. （05浙江卷）
A．should B．must C．will D．can
26. I was on the highway when this car went past followed by a police car. They ____ at least 150 kilometers an hour. （05重庆卷）
A. should have been doing B. must have been doing
C. could have doneD. would have done
27. I _______have been more than six years old when the accident happened. （05天津卷）
A. shouldn't B. couldn't C. mustn't D. needn't
28. Helen ______ go on the trip with us, but she isn’t quite sure yet. （05安徽卷）
A. shall B. must C. may D. can
29. This cake is very sweet. You __________ a lot of sugar in it. （05辽宁卷）
A．should put B．could have put C．might put D．must have put
30. --- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
--- Oh, dear! She _______ a lot of difficulties! (05江苏卷)
A. may go through B. might go through
C. ought to have gone through D. must have gone through
31. I have lost one of my gloves. I ________ it somewhere. （05北京春季）
A. must drop B. must have dropped
C. must be dropping D.must have been dropped
32. --- Who is the girl standing over there?
--- Well, if you______ know, her name is Mabel. （04天津）
A may B can C must D shall
33. “The interestbe divided into five parts, according to the agreement made by both sides,” declared the judge. （04重庆）
A. may B. should C. must D. shall
34. --- I don't mind telling you what I know.
--- You . I'm not asking you for it. （04江苏）
A. mustn't B. may not C. can't D. needn’t
35. I ____ pay Tracy a visit, but I am not sure whether I will have time this Sunday. （04浙江）
A. should B. might C. would D. could
36. --- I’ll tell Mary about her new job tomorrow.
--- You________ her last week. （04福建）
A．ought to tell B．would have told C．must tell D．should have told
37. I often see lights in that empty house. Do you think I _____ report it to the police? （04广西）
A. should B. mayC. will D. can
38. Mr. White _____ at 8:30 for the meeting, but he didn’t’ show up. （04广西）
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving
39. --- Excuse me, but I want to use your computer to type a report.
--- You ______ have my computer if you don't take care of it. （04湖南）
A. shan't B. might not C. needn't D. shouldn't
40. - Excuse me. Is this the right way to the Summer Palace?
- Sorry, I am not sure. But it be. （04湖北）
A．might B．will C．must D．can
41. --- Mum, I’ve been studying English since 8 o’clock.. I go out and play with Tom for a while?
--- No, I’m afraid not. Besides, it’s raining outside now. （04辽宁）
A．Can’t B．Wouldn’t C．May not D．Won’t
42. Children under 12 years of age in that country ________ be under adult supervision when is a public library. （04上海）
A. mustB. may C. can D. need
43. --- Isn’t that Ann’s husband over there?
--- No, it______ be him---I’m sure he doesn’t wear glasses. （04全国I）
A can’t B must not C won’t D may not
44. You ______ be tired---you’ve only been working for an hour. （04全国II）
A must not B won’t be C can’t D may not
45. --- Tom graduated from college at a very young age.
--- Oh, he______ have been a very smart boy then. （04全国IV）
A could B should C might D must
46. You might just as well tell the manufacturer that male customers _______ not like the design of the furniture. （04上海春季）
A. must B. shall C. may D. need
Key : BDACB BABDD BDABA DCBCA DABCD BBCDD BCDDA DAAAA AAACD C
篇5：情态动词的用法
情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。 情态动词无人称和数的变化;不能单独使用，必须与其后的动词原形构成谓语。
一、can, could
1) 表示请求和允许。
-----Can I go now?
----- Yes, you can. / No, you can’t.
此时可与may互换。在疑问句中还可用could,might代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。
---- Could I come to see you tomorrow?
---- Yes, you can. ( No, I’m afraid not. )
2) 表示能力(体力、知识、技能)。
Can you lift this heavy box?(体力)
Mary can speak three languages.(知识)
Can you skate?(技能)
此时可用be able to代替。Can只有一般现在时和一般过去式;而be able to则有更多的时态。
I’ll not be able to come this afternoon.
当表示“经过努力才得以做成功某事”时应用be able to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.
3) 表示客观可能性(客观原因形成的能力)。
They’ve changed the timetable, so we can go by bus instead.
This hall can hold 500 people at least.
4) 表示推测(惊讶、怀疑、不相信的态度)，用于疑问句、否定句和感叹句中。
Can this be true?
This can’t be done by him.
How can this be true?
二、may, might
1) 表示请求和允许。might比 may语气更委婉，而不是过去式。否定回答时可用can’t或mustn’t，表示“不可以，禁止”。
----Might/ May I smoke in this room?
---- No, you mustn’t.
---- May/Might I take this book out of the room?
---- Yes, you can. (No, you can’t / mustn’t. )
用May I...?征徇对方许可时比较正式和客气，而用Can I...?在口语中更常见。
2)用于祈使句，表示祝愿。
May you succeed!
3) 表示推测、可能性(不用于疑问句)。
might不是过去式，它所表示的可能性比may小。
1.He may /might be very busy now.
2.Your mother may /might not know the truth.
三、must, have to
1) 表示必须、必要。
You must come in time.
在回答引出的问句时，如果是否定的，不能用mustn’t(禁止，不准)，而用needn’t, don’t have to(不必).
---- Must we hand in our exercise books today?
---- Yes, you must.
---- No, you don’t have to / you needn’t.
2) must是说话人的主观看法， 而have to则强调客观需要。Must只有一般现在时， have to 有更多的时态形式。
1. he play isn’t interesting, I really must go now.
2. I had to work when I was your age.
3) 表示推测、可能性(只用于肯定的陈述句)
1. You’re Tom’s good friend, so you must know what he likes best.
2. Your mother must be waiting for you now.
四、dare, need
1) dare作情态动词用时, 常用于疑问句、否定句和条件从句中, 过去式形式为dared。
1. How dare you say I’m unfair?
2. He daren’t speak English before such a crowd, dare he?
3. If we dared not go there that day， we couldn’t get the beautiful flowers.
2) need 作情态动词用时, 常用于疑问句、否定句。在肯定句中一般用must, have to, ought to, should代替。
1.You needn’t come so early.
2. ---- Need I finish the work today?
---- Yes, you must. / No, you needn’t.
3) dare和 need作实义动词用时， 有人称、时态和数的变化。在肯定句中，dare后面常接带to的不定式。在疑问句和否定句中，dare后面可接带to或不带to的不定式。而need后面只能接带to的不定式。
1. I dare to swim across this river.
2. He doesn’t dare (to) answer.
3. He needs to finish his homework today.
篇6：英语情态动词用法
1. can 的用法：
(1).表示能力、许可、可能性。 表示能力时一般译为“能、会”， 即有种能力，尤其是生来具备的能力，此时may 和must均不可代替它。如：She can swim fast, but I can’t . 她能游得很快，但我不能。I can see with my eyes. 我用眼睛看。
(2).表示许可，常在口语中。如：You can use my dictionary. 你可以用我的字典。
(3).表示推测，意为“可能”， 常用于否定句和疑问句中， 此时can’t 译为“ 不可能”。 如：Can the news be true? 这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。
【例题】—I think Miss Gao must be in the library. She said she would go there. —No. She __be there, I have just been there. A.can’t B.mustn’t C.needn’t D.wouldn’t
【解析】根据下文“我刚去过那儿”可知，应为“ 不可能”， can’t 表示推测[答案] A
2. could的用法：
(1).can的过去式，意为“ 能、会”，表示过去的能力。如：He could write poems when he was 10. 他十岁时就会写诗。
(2). could在疑问句中，表示委婉的语气，此时 could 没有过去式的意思。如:Could you do me a favour? 你能帮我个忙吗?—Could I use your pen? 我能用一下你的钢笔吗? —Yes, you can.可以。(注意回答)
3. may的用法：
(1).表示请求、许可，比can 正式，如：May I borrow your bike? 我可以借你的自行车吗?You may go home now. 现在你可以回家了。
【例题】—_______ I borrow your MP3? —Sure . Here you are. A. May B.Should C.Must D. Would
【解析】 在此处表示请求，意为“ 做……可以吗”。 答案：A
(2) .表示推测，谈论可能性，意为“ 可能， 或许”，一般用于肯定句中。 如：It may rain tomorrow . 明天可能会下雨。She may be at home. 她可能在家呢.
(3) .may的过去式为might ，表示推测时。可能性低于may。 如：He is away from school. He might be sick.
他离开学校了，可能是他生病了。
(4) . 表示希望、祈求、祝愿，常可译为“祝愿”。通常是用may +主+V 例如：May you have a good time. 祝你过得愉快。May you be happy! 祝你幸福! May you succeed!祝你成功!
4. must的用法：
(1).must 表示主观看法，意为“必须、一定”。 如：You must stay here until I come back.在我回来之前你必须呆在这儿。Must I hand in my homework right now? 我必须现在交作业吗?
(2) 其否定形式mustn’t表示“ 一定不要 ” “千万别” “禁止, 不许”. 如：You mustn’t play with fire. 你不许玩火。You mustn’t be late. 你一定不要迟到。
(3)对must引导的疑问句，肯定回答为must，否定回答为needn’t 或 don’t have to .如：—Must I finish my homework?我现在必须完成作业吗?—No, you needn’t.不，你不必。
(4)must表示有把握的推测，用于肯定句。如: The light is on, so he must be at home now.灯亮着，他现在肯定在家。
注意其反意问句的构成形式：
当must表示肯定的判断、推测时，其反意疑问句要用实际问句的助动词来构成。如：She must have seen the film before，hasn’t she?(注意反意疑问句的后半部分)You must have met uncle Wang in the shop yesterday，didn’t you? (注意反意疑问句的后半部分)
5. need的用法：
(1).need 表示需要、必须，主要用于否定句和疑问句中，其否定形式为needn’t，意为“没有必要，不必”。 用need 提问时，肯定回答为 must，否定回答为 needn’t或don’t have to。 如：—Need I stay here any longer? 我还有必要留在这儿吗?—Yes, you must .是的。—No. you needn’t /don’t have to. 不， 你不必。
(2).need 还可以作实义动词，此时有人称、数和时态的变化，如果是人作主语后边多接动词不定式。如：I need to do it right now. 我需要马上做这件事。He needs to learn more about the girl.他需要多了解那个女孩。
如果是物作主语，一般用need doing 与 need to be done这种情况下应注意两点：
①.主动形式的动名词doing具有被动的含义;②.该动名词可以改为其动词不定式的被动形式而句子的意义不变。例如：. The door needs painting. = The door needs to be painted. 那扇门需要油漆一下。Your car needs mending. = Your car needs to be repaired. 你的车需要维修了。
6. dare 的用法：dare意为“敢、敢于”, 用法近似于need，有两种词性：
(1)dare 作为情态动词，多用于否定句、疑问句或条件句中，无第三人称单数形式，只有一般现在时和一般过去时。如：Dare he tell them what he knows? 他敢告诉他们所知道的情况吗?I daren’t ask her – will you do it for me? 我可不敢问她，你能帮我问问吗?
(2)dare 作为实义动词，此时有人称、数及时态的变化。如：He doesn’t dare to break his promise.他不敢食言。
注意：在口语中，dare 的各种形式常与不带to 的不定式连用。如：Do you dare tell her what I said?
你敢告诉她我说的话吗?I didn’t dare look at him.我不敢看他。
篇7：英语情态动词用法
一、can, could
1) 表示能力(体力、知识、技能)。
Can you lift this heavy box?(体力)
Mary can speak three languages.(知识)
Can you skate?(技能)
此时可用be able to代替。Can只有一般现在时和一般过去式;而be able to则有更多的时态。
I’ll not be able to come this afternoon.
当表示“经过努力才得以做成功某事”时应用be able to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.
2) 表示请求和允许。
-----Can I go now?
----- Yes, you can. / No, you can’t.
此时可与may互换。在疑问句中还可用could,
might代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。
---- Could I come to see you tomorrow?
---- Yes, you can. ( No, I’m afraid not. )
3) 表示客观可能性(客观原因形成的能力)。
They’ve changed the timetable, so we can go by bus instead.
This hall can hold 500 people at least.
4) 表示推测(惊讶、怀疑、不相信的态度)，用于疑问句、否定句和感叹句中。
Can this be true?
This can’t be done by him.
How can this be true?
二、may, might
1) 表示请求和允许。might比 may语气更委婉，而不是过去式。否定回答时可用can’t
或mustn’t，表示“不可以，禁止”。
----Might/ May I smoke in this room?
---- No, you mustn’t.
---- May/Might I take this book out of the room?
---- Yes, you can. (No, you can’t / mustn’t. )
用May I...?征徇对方许可时比较正式和客气，而用Can I...?在口语中更常见。
2)用于祈使句，表示祝愿。
May you succeed!
3) 表示推测、可能性(不用于疑问句)。
might不是过去式，它所表示的可能性比may小。
1.He may /might be very busy now.
2.Your mother may /might not know the truth.
三、must, have to
1) 表示必须、必要。
You must come in time.
在回答引出的问句时，如果是否定的，不能用mustn’t(禁止，不准)，而用needn’t, don’t have to(不必).
---- Must we hand in our exercise books today?
---- Yes, you must.
---- No, you don’t have to / you needn’t.
2) must是说话人的主观看法， 而have to则强调客观需要。Must只有一般现在时， have to 有更多的时态形式。
1. he play isn’t interesting, I really must go now.
2. I had to work when I was your age.
3) 表示推测、可能性(只用于肯定的陈述句)
1. You’re Tom’s good friend, so you must know what he likes best.
2. Your mother must be waiting for you now.
四、dare, need
1) dare作情态动词用时, 常用于疑问句、否定句和条件从句中, 过去式形式为dared。
1. How dare you say I’m unfair?
2. He daren’t speak English before such a crowd, dare he?
3. If we dared not go there that day， we couldn’t get the beautiful flowers.
2) need 作情态动词用时, 常用于疑问句、否定句。在肯定句中一般用must, have to, ought to, should代替。
1.You needn’t come so early.
2. ---- Need I finish the work today?
---- Yes, you must. / No, you needn’t.
3) dare和 need作实义动词用时， 有人称、时态和数的变化。在肯定句中，dare后面常接带to的不定式。在疑问句和否定句中，dare后面可接带to或不带to的不定式。而need后面只能接带to的不定式。
1. I dare to swim across this river.
2. He doesn’t dare (to) answer.
3. He needs to finish his homework today.
篇8：英语情态动词用法
一、九大情态动词的时态关系：
1. 现在式 can -- 过去式 could
2. 现在式 may -- 过去式 might
3. 现在式 shall -- 过去式 should
4. 现在式 will -- 过去式 would
5. 现在式 must -- 过去式 must (常用had to来代替)
二、情态动词表示“可能”或“预测”
(can, could, will, would, shall, should, must, ought to)
(1)can 和 could 用于表示“可能”或“预测”：
1. He can't be at home. 他不可能在家。(否定句)
2. Can the news be true? 这消息可能是真的吗? (将情态动词 can 置于主语 the news 前就成疑问句)
3. Anybody can make mistake. 任何人都可能犯错误。(只表示理论上的可能性)
(2)may 和 might 用于表示“事实上的可能性”或“预测”：
1. It may rain tomorrow. (表示可能会发生) 明天可能会下雨。
2. It may snow later this afternoon. (表示预测) 今天下午可能会下雪。
3. You might be right. (表示有可能) 你可能是对的。
(3)will 和 would 用于表示“预测”或“习惯性”：
1. I think he will be all right now. 我想他现在一定好了。 (will be 表示一定会)
2. That would be his mother. 那肯定是他母亲。(would be 表示肯定是)
3. He will sit there hour after hour looking at the river.
他经常一连几个小时坐在那儿看着河水。(will 表示经常的)
(4)shall 和 should 用于表示“必定”：
1. I shall be rich one day. (shall be ) 总有一天我会发达的。
2. That should be Sam and his mother. (should be)那准是Sam和他的母亲。
(5)must 用于表示“必定”，“必会”：
1. This must be good for you.(must be 肯定) 这肯定对你是有益的。
2. All mankind must die.(表示必然会发生的事) 所有的人一定会死的。
3. Mustn't there be a mistake? (mustn't 多用于疑问句) 那肯定会有错误吗?
三、情态动词表示“许可”、“请求”
(can, could, will, would, shall, should, may, might, must)
(1)can 和 could 用于表示“许可”、“请求”：
1. Can I go with you? (请求)我能跟你一起走吗?
2. Father said I could go to cinema. (表示过去的许可) 爸爸说我可以去看电影。
3. Could I ask you something? (请求,用 could 比 can 更婉转)我可以问你一件事吗?
(2)will 和 would 用于表示“请求”
1. Will you kindly tell me the way to the post office? 请问到邮局怎么走?(表示客气请求)
2. Would you give me your address? 请你告诉我你的地址，好吗?(用would比will表示更客气)
(3)shall 和 should 用于第一人称，表示征求对方的意见
1. Shall we talk? 我们谈谈好吗?
2. What should we do next? (用should 比 shall 表示更客气) 下一步我们该怎么做?
3. Shall he come to see you? (用于第三人称疑问句) 要不要他来看你?
(4)may 和 might 用于表示“许可”(口语中多用can)
1. You may take a walk. (表示给予许可) 你可以散散步。
2. You might read the story for me. (比may更婉转) 是否请给我读一读这故事。
3. May I make a suggestion? 我可以提个建议吗?
4. Might I take a look of your work? 我看看您的大作行吗?
5. Students may not make noise in the library. (may not 表示不许可或禁止)
学生不得在图书馆里吵闹。
6. If I may say so, you are not right. (用于条件句，表示请求)
你是不对的，如果我可以这么说的话。
(5)must 用于表示“禁止”，“不准”：
1. Cars must not be parked here. (must not表示不许可) 此地不准停车。
2. All of you mustn't fishing in the pool. (must not 语气方面比 may not 更强)
你们不准在池里钓鱼。
篇9：情态动词的用法
情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。 情态动词无人称和数的变化;不能单独使用，必须与其后的动词原形构成谓语。
一、can, could
1) 表示能力(体力、知识、技能)。
Can you lift this heavy box?(体力)
Mary can speak three languages.(知识)
Can you skate?(技能)
此时可用be able to代替。Can只有一般现在时和一般过去式;而be able to则有更多的时态。
I’ll not be able to come this afternoon.
当表示“经过努力才得以做成功某事”时应用be able to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.
2) 表示请求和允许。
-----Can I go now?
----- Yes, you can. / No, you can’t.
此时可与may互换。在疑问句中还可用could,might代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。
---- Could I come to see you tomorrow?
---- Yes, you can. ( No, I’m afraid not. )
3) 表示客观可能性(客观原因形成的能力)。
They’ve changed the timetable, so we can go by bus instead.
This hall can hold 500 people at least.
4) 表示推测(惊讶、怀疑、不相信的态度)，用于疑问句、否定句和感叹句中。
Can this be true?
This can’t be done by him.
How can this be true?
二、may, might
1) 表示请求和允许。might比 may语气更委婉，而不是过去式。否定回答时可用can’t或mustn’t，表示“不可以，禁止”。
----Might/ May I smoke in this room?
---- No, you mustn’t.
---- May/Might I take this book out of the room?
---- Yes, you can. (No, you can’t / mustn’t. )
用May I...?征徇对方许可时比较正式和客气，而用Can I...?在口语中更常见。
2)用于祈使句，表示祝愿。
May you succeed!
3) 表示推测、可能性(不用于疑问句)。
might不是过去式，它所表示的可能性比may小。
1.He may /might be very busy now.
2.Your mother may /might not know the truth.
三、must, have to
1) 表示必须、必要。
You must come in time.
在回答引出的问句时，如果是否定的，不能用mustn’t(禁止，不准)，而用needn’t, don’t have to(不必).
---- Must we hand in our exercise books today?
---- Yes, you must.
---- No, you don’t have to / you needn’t.
【高考情态动词用法】相关文章：
9.be动词的用法
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