当前位置：文档库 › 情态动词的语法特征

情态动词的语法特征

1）情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。

2）情态动词除ought 和have 外，后面只能接不带to 的不定式。

3）情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。

4）情态动词没有非谓语形式，即没有不定式，分词，等形式。

1、表示能力：can/could , be able to (+do)

1)can和be able to 的区别：观察以下各句，可知can 只能用于

和；be able to 可用于各种时态。

eg: ① I can /am able to speak English. 他能说英语。

② He could/ was able to eat four pieces of bread when he was young.

③ They will be able to finish the housework soon.

2）Can/could you+ 动原+其它？表示征求对方意见或提出请求，表示委婉语气，但在这个句型里could比can更委婉。但要注意它的回答用can不用could.

Eg: ---Could you help me ?---Yes, I can.

2、表示许可：may/might, can/could. 但一定要注意：以may开头的疑问句的否定

回答。

例如：---May I come in? –Yes, you may. / No, you can’t = No ,you mustn’t.

3、表示必须、必要：must, have to 表示；needn’t 表示。

Eg: You must/ have to finish the work. 你必须完成这个工作。

1）观察以下句子，我们可知must表示说话人的；have to 表示。

Eg: ① I must go home. 我必须回家；

② He has to give up smoking because of badly cough. 因为咳嗽，他不得不戒烟。

2）观察以下句子，我们可知mustn’t表示,译为；don’t have to译为。

Eg: ① You mustn’t beat her. 你不准打她。

②–Must I finish my homework now?—Yes, you must ./ No, you needn’t=you don’t have to

-我必须现在完成作业吗？--是的，你必须完成。/ 不，你不必了。

4、表示推测：must, can, could , may, might.

Eg: ① You run for hours, you must be very tired. 你跑了几个钟，你一定很累了。

② It can’t be John. He has gone to the UK. 不可能是John, 他已经去了英国。

③–Who can it be? ---It may/could/might be Jack. It looks like him.

--可能是谁呢？--可能是Jack, 看起来像他。

观察以上各句总结：肯定推测译为；否定推测译为；疑问推测有个译为；可能性推测用。

及时训练并归纳最常考情态动词的用法：

1、---Would you like to go fishing with me? ---Yes, / 。

2、---May I put these things here? ---Yes, / No,

3、---Must we hand in our homework today? ---Yes, / No,

4、---Look! Someone is coming. It be our class teacher. (用must/can/could/may/might填空)

---It be him. He has gone to Beijing.

1. 中考怎么考？

ngs here.—Do you know all these should _______ (付

款) in US dollars? (pay)

2. — Shall we take a taxi? —No, we _______ . It’s not far from here.

A. can’t

B. mustn’t C, shouldn’t D. needn’t

3. —Whose T-shirt is this?—It be John's. It's much too small for him.

A. may

B. must

C. can't

D. shouldn't

4. —What should we do about the trash?—It (65) (必须带走) when you leave. (take)

2. 中考考什么？

1.+ 动词原形例：You must finish the work.

否定句：情态动词+not 例：He can not carry the box.

2.can “能力,许可” 例：He can swim now. （能够）

can’t =cannot =can not “不能” 例：He can’t swim now. (不能)

could ①could是“can的过去式” 例：He could swim three years ago.

②could还可以表示“客气委婉的语气或请求”，用在疑问句中。回答时用can。

例：Could Jim lend me his bike? ------Yes, he can.

★can和be able to在表示“能力”上意思相同，差别不大。can只有现在和过去两种形式，而be able to有更多的时态形式

例：No one can do it. = No one is able to do it.

I’m sorry I haven’t been able to answer your letter.

3.may “可以,许可,” 例：May I borrow your ruler?

may not “也许不” 例：Today Jim may not come to our party.

01.I ______ follow you. Would you please repeat it?

A. can’t

B. mustn’t

C. needn’t

D. shouldn’t

02.—I forgot to bring my dictionary. Could I use yours?—Yes, you ______.

A. can

B. must

C. could

D. should

03..--Pauline has lost her phone. –No. It’s in her bag. I _________ hear it.

A. must

B. can

C. may

D. shall

04.. Finish your homework first, then you’ll _______ watch TV for an hour.

A. can

B. be able to

C. able D could

05.. —_______ I have lunch now, Mom?—No. You must wash your hands first.

A. Would

B. May

C. Ought to

06..—Have you decided where to go for your summer vacation?—Not yet. We

_______go to Qingdao . It's a good place for vacation. A. may B.

need C. must

07.. you please give me a hand? The box is too heavy.

A. Should

B. Could

C. Must

D. Need

4.must “必须” 例：You must finish the work today.

must not =mustn’t “不可以，不应该” 例：You mustn’t lend the book to someone else. ★must和have to都表示必须，must强调主观看法，have to强调客观事实需要。must只有现在和过去两种形式，而have to有更多的时态形式。

例：I must finish the work. （主观上想完成）

My teacher will come to my home, so I have to clean my room. （老师要来是客观原因）

We will have to finish the work. （用于将来时用have to，而must则不能）5.need “必要,必定” 例：You need start the work now.

needn’t =need not “不必” 例：We need n’t hurry.

★need还用作实意动词，有各种变化

例：He needs to know it. （肯定句）

He doesn’t need to know it. （否定句）

Does he need to know it? （一般疑问句）

6.have to +动词原形，表示“必须做---”。

例：He has to finish his homework at first. He doesn’t have to finish his homework at first.

The boys have to finish their homework at first. The boys don’t have to finish their homework at first.

01.—Dad, must we wait until the light becomes green?—Yes, I'm afraid

we______ .That's the traffic rule.

A. can

B. may

C. have to

D. need

02.—Excuse me, may I keep the book a little longer?—Sorry. You ________ return it

today.

A. must

B. mustn’t

C. can

D. can’t

03.Children _______ sit in the front seat of a car. It’s too dangerous.

A. need

B. needn’t

C. must

D. mustn’t

04.We ______ pay to get into the concert. It's free.

A. can’t

B. mustn’t

C. might not

D. don’t have to

7.情态动词的一般疑问句的回答有变化

Can he swim? Yes, he can. No, he can’t.

May I watch TV now? Yes, you may(can). No ,you mustn’t.或can’t.

Must I finish the work now? Yes, you must. No, you needn’t. =you don’t have to.

01.—Must I water the flowers now, mum?—No, you . You do it later.

A. mustn’t; must

B. mustn’t; ma y

C. needn’t; may

D. needn’t; must

02.—May I take this magazine out of the reading room?—No, you ____. You read it in

here.

A. mightn’t

B. won’t

C. needn’t

D. mustn’t

03.—Can I park my car in front of the building?—No, you ________.

A. won't

B. can't

C. needn't

D. couldn't

04.—May I play computer games, Mom?—No, you ____________.

A. don’t

B. can’t

C. wouldn’t

D. won’t

05.—May I smoke here? —No, you _______. This is a no-smoking room.

A. needn’t

B. mustn’t

C. couldn’t

D. wouldn’t

8.情态动词表示猜测

情态动词推测意思

①must must + 动词原形“一定是---”

②may \might may\might +动词原形“也许是---”

③could could +动词原形“可能是---”

④can can’t + 动词原形“不可能是---”

例：①You must be ill. I can see it from your face. (一定是病了，表示对现在的推测)

②John is absent. He may\might be ill. (也许是病了，表示对现在的推测)

③The guitar could be Jim’s. (可能是，表示对现在的推测)

④He ca n’t be in the room. （不可能是，表示对现在的推测）

01.—Who’s singing in the garden?—It be Mr. Brown. He always practices singing

at this time.

A. must

B. can’t

C. need

02.—Is the man over there Mr. Brown?—It ______ him. He has gone to Brazil to watch

the 2014 FIFA World Cup.

A. may not

B. can’t be

C. shouldn’t

D. mustn’t

03.—Bob, where is Linda?—She _______ be in the library, bu t I am not sure.

A. must

B. may

C. need

D. has to

04.— Where are you going this month?— We______ go to Xiamen, but we're not sure.

A. needn’t

B. must

C. might

D. mustn't

05.—Is Mr Brown driving here?—I’m not sure. He ______ come by train.

A. may

B. shall

C. need

D. must

9.had better +动词原形，表示“最好做---”。例：You had better take the books away.

否定句：had better + not + 动词原形。例：You had better not take the books away.

10.should + 动词原形，表示“应该做---”。例：They should finish the homework on time.

shouldn’t 表示“不应该---” 例：They should not finish the homework at school.

01.It’s rather hot in the room. You’d better _______ the windows or the door.

A. close

B. not to close

C. don’t close

D. not close

02. A country has dreams. We teenagers ________ also have dreams. With dreams and

hard work, anything amazing can be created. A. may B. must C. should

一网打尽：

1.—I know by what time you want the project to be done?—By the day after tomorrow. you finish it on time? A. May; Can B. Must; Need C. Could; Must D. Need; Would

2.—Must I hand in my homework now, Mr. Smith?—No, you _______.A. can’t B. shouldn’t

C. wouldn’t

D. needn’t

3.The man is feeling much better now, so you ______ call a doctor. A. needn’t B. can’t

C. mustn’t

D.shouldn’t

4.If you _____ smoke, please go outside. A. can B. may C. must

D. might

5.Look at the “No parking” sign. You _____park your c ar here. A. should B. must C. needn’t D. mustn’t

6.—_______ you leave now? You only arrived here an hour ago.—Sorry, but so much homework is waiting for me.

A. May

B. Must

C. Can

D. Might

7.Here is my phone number. You _______ call me anytime you like. A. must B. can C. should D. need

8.—Let’s go climbing, shall we?—You ____ be joking! Don’t you know I’m afraid of high places?

A. may

B. can

C. must

D. should

9.—Are you interested in shopping online?—Not so much. We ____ see real products but pictures.

A. shouldn’t

B. can’t

C. mustn’t

D. needn’t

10.—Could you please have a walk with me?—Sorry, I ____. I have something important to do now.

A. mustn’t

B. needn’t

C. can’t

D. may not

11.—Lingling, can I use your e-dictionary?—Sure. But you _______ return it after class.

A. must

B. can

C. may

D. would

12.—Look, someone left a book.—Oh, yeah… This book _______ be Kitty’s. Only she likes to read this kind of books.

A. can

B. must

C. may

D. might

13.—Is the long-haired man Bruce?—No, it _______ be him. He’s in New York now.

A. can’t

B. mustn’t

C. needn’t

D. may not

14.People _______ wait until the traffic becomes green. That’s the traffic rule.

A. must

B. can

C. need

D. may

15.—Li Lei, hurry up! The bus is coming. —Oh, no. We ______ cross the street until the traffic lights turn green.

A. mustn’t

B. may not

C. needn’t

D. have to

16.—How many English words do you think I should know?—As many as you ____. Then you will find reading quite easy.

A. will

B. must

C. can

D. might

17.Excuse me, sir. You ______ open the door before the train stops.

A. mustn't

B. needn’t

C. may not

D. don’t have to

18.You mustn’t go off on your own, because you_______get lost in the mountains.

A. should

B. must

C. need

D. might

19.—Are you in a hurry?—NO, I’ve got plen ty of time I wait.

A. can

B. can’t

C. must

D. mustn’t

20.—_________ I help you, sir?—Yes. I want a T-shirt. A. Can B. Should C. Must

D. Would

21.—Honey, stay home before I return. —I ________, mum. A. must B. can

C. will

D. should

22.—Can I borrow your ruler，please?—Yes，you . But you must return it to me before lunchtime.

A. have

B. can

C. must

D. used to

23.—Difficulties always go with me! —Cheer up! If God closes a door in front of you, there ______ be a window opened for you. A. would B. must D. could

D. can

24.Amy, I hear you’ve got many foreign coins. __ I have a look? —Of course, I’ll fetch them for you.

A. May

B. Must

C. Should

D. Need

25.29. —Honey, how are you feeling now?—I am much better, Mum. So you ________ take me to see the doctor.

A. can't

B. mustn't

C. needn't

D. couldn’t

26.Could you please tell me how to improve my spoken English?---Certainly, I_______. A. can B. could C. must

27.( )Excuse me. How can I get to the railway station? ---Turn left and then follow your nose. You _____ miss it!

A. mustn’t

B. can’t

C. shouldn’t

D. needn’t

28.( )May I take my pet dog with me into the cinema? ------The rule says no. So you ________.

A. can

B. mustn’t

C. may

29.( )Will you answer the telephone? It ________ be your mother. ------Sorry, I ________. I’m busy.

A. can, mustn’t

B. will, can’t

C. may, can’t

D. need, will

30.( )Would you please help me with the questions? ---Sorry. You ___ go and ask Mary. She ___ know the answer.

A. must, can

B. can, may

C. need, can

D. must, may

31.( )Let’s go to the concert tonight, Michael! ---Sorry, I _____. I have to help my mother with the housework.

A. mustn’t

B. may not

C. needn’t

D. can’t

32.( )It seems that it is going to rain. You’d better ________ the windows open when you leave the house.

A. not leave

B. leave

C. not to leave

D. to leave

33.( )Four hundred dollars for a pair of shoes! You ________ be joking!

A. may

B. can

C. need

D. must

34.( )There is somebody at the door. ________ I go and see who it is?

A. Shall

B. Must

C. Will

D. Would

35.( )We ________ fight against pollution. A. may B. should C. mustn’t D. needn’t

36.( )Is Simon coming by train? ------He should, but he ________ not. He like s driving his car.

A. may

B. shall

C. need

D. must

37.( )Will you please stay here for the party? ---Sorry, I ________. I’ll have to go to an important meeting.

A. mustn’t

B. needn’t

C. can’t

D. won’t

38.( )________ I have to show the school report to my parents, Miss King! ------Yes, you do.

A. Must

B. Do

C. Can

D. May

39.( )You must come back every month. ------Yes, I ________. A. will B. must

C. should

D. can

40.( )Tom, you _______ play with the knife．You______ hurt yourself．B

A. won't; can't

B. mustn't; may

C. shouldn't; must

D. can't; should

41.( )–I’m afraid I need a pair of glasses. I ____ hardly see the words on the blackboard.--- That’s terrible. You may have got poor eyesight. A. can B. must

C. may

D. need

42.( )Last year I ______ drive. I used to take the bus. A. could B. couldn’t C. should D. shouldn’t

43.( )—______ I try on those shoes in the window?—______. They are just on show.

A. Could; Yes, you can

B. Can; Sorry, you couldn’t

C. Could; Sorry, you can’t

D. Can; Yes, you could

44.( )---Have you heard that some bad thing would happen in 2012?---Don't worry! The news_____ be true.

A. mustn't

B. may not

C. needn't

45.( )Drivers _______wear the safety belt when driving. This is the traffic rule. A. can B. may C. will D. must.

46.Peter , we need to clean the house. Could you please ( sweep ) the floor?

47.If you don’t tell me what the problem is, I can’t (help) you.

48.We must the teacher’s instructions when we are in the lab.

49.David can very fast. I’m sure he will win the race at the sports meeting.

50.It’s 11:00 in the evening now. You can’t the last bus.

51.You shouldn’t about your mother. She is OK.

语法知识—情态动词的知识点总复习附解析

一、选择题 1．It is 11:00 p.m now. Peter hasn't come back yet. His mother ______ be very mad at him. A．may B．can C．must D．need 2．—Have you heard about the temperature of the earth will rise to 59℃ in 2020?—Don’t worry! The news _______ be true. A．must not B．may not C．needn’t D．will not 3．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 4．I’ve bought a nice necklace for Jo’s birthday. She _____like it, but I’m not sure. A．can B．may be C．might D．must 5．---Mum, must I finish my homework today? ---No, you . Tomorrow is Sunday and you may have a rest today. A．shouldn’t B．mustn’t C．can’t D．don’t have to 6．You look quite tired. You'd better ________ a good rest. A．stop to have B．stop having C．to stop to have D．to stop having 7．—Tom, we’re going shopping at eight, right? —Yeah, but I ______ be a little late, so don’t wait for me. A．may B．should C．mustn’t 8．You should________ the teacher________being late for school. A．apology to, about B．apologize to, for C．apologies to, for D．apologize to, on 9．—Can you come to my party on Saturday afternoon? —Sorry, I can’t. I ________ meet my friends. A．can’t B．might have to C．needn’t 10．— I wonder if these are Jim's glasses. —They _____his. He doesn't wear glasses. A．might be B．could be C．can't be 11．—The book report is very important. You ________ write it carefully. —But I ________ hand it in now. A．must; must B．have to; must C．must; have to D．have to; have to 12．Even the top student can't work out this problem, so it________ be too difficult. A．must B．may C．can D．need 13．—________ I borrow the books from the library, Miss Yang? —Sorry, you________. These books are only for members of the English Club. A．Can; couldn’t B．Could; can’t C．Could; could n’t D．Can; needn’t

情态动词大学英语语法精解

大学英语语法精解——情态动词首先让我们分析以下近几年情态动词的考题： 1) This box is too heavy, _________give me a hand?(1998.1) A .would you mind B. would you please C. will you like to D. will you please to 2) Research findings show we spend about two hours dreaming every night , no matter what we ____ during the day.(1999.1) A. should have done B. would have done C. may have done D. must have done 3)It was very kind of you to do the washing-up,but you____ it.(1998.6) A. mustn't have done B. wouldn't have done C. mightn't have done D. didn't have to do 4) If you don't like to swim, you ___ stay at home.(1995.1) A. should as well B. may as well C. can as well D. would as well 5) You ____ him so closely;you should have kept your distance.(2000.6) A. shouldn't follow B. mustn't follow C. couldn't have been following D. shouldn't have been following 6) You ___her in her office last Friday; she's been out of town for two weeks.(1996.1) A. needn't have seen B. must have seen C. might have seen D. can't have seen 7) The room is in a terrible mess; it ____ cleaned.(1996.6) A. can't have been B. shouldn't have been C. mustn't have been D. wouldn't have been 参考答案 1) B 2) C 3) D 4) B 5) D 6) C 7) A 2．情态动词的测试要点从以上例题可以看出，四级语法对情态动词的测试大体有以下几点。 1）情态动词的基本用法，如①④⑤。 2）情态动词+ 动词的完成形式的用法，如③⑥。 3）情态动词的推测性用法,如⑦。

(完整版)必修三unit2语法讲解情态动词用法

必修三unit2语法讲解情态动词用法（二）、ought to的用法 1. ought to应该”与should相比较ought to语气重,偏重责任、义务、道德、法律”等方面，意为应该” ①We ought to stop polluti ng n ature.我们应该停止污染大自然。 2. ought to表示较大的可能性。 ①Mary ought to be here soon.玛丽应该很快就来了。［点津］用ought to表示推断时，语气较肯定，通常指的是一种合乎逻辑的可能性（与should表推断时相似）,有时可译为很可能；准是”语气比must要弱）。 3. ought to的否定形式为ought not to或ought n't to,其一般疑问句形式是将ought置于主语前。 ①We ought not to start so late.我们不该这么晚动身。 4. 在反意疑问句中,常省掉to用ought n't或should n't。 ① He ought to take back what he has said, ought n' t/should n't he? 他应该收回他说的话，是吗？ 1 —1.写出下面句中黑体部分的意义 ① To keep fit, weought to lear n more about our body. _____ ① Youought not to do such a thing. _______ ① Itought to be a close game. _______ 1 —2.用ought完成句子 ①（尔不该责备他。You __________ （scold ）him. ①我明天该动身吗？一_______________ （_leave ［tomorrow? 是的，你应该。一Yes, you ought to ①我们现在应该走，是吗？We ought to go now, ______________ _? 二、have to, don't have to 与must n't 的用法 1. have to（口语中常用have got to）表示客观需要做的事情，意为必须；不得不”有时态、人称和数的变化，其否定式和疑问式应由助动词do构成。 ① My brother was very ill, so I had to call the doctor in the middle of the ni ght. 我弟弟病了，我不得不半夜里把医生请来。

初中英语语法知识—情态动词的全集汇编及答案(3)

一、选择题 1．— Must I go home? — No, you ________. A．can’t B．mustn’t C．don’t D．needn’t 2．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 3．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 4．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 5．—______ you please tell me something about the life in Canada or America?—Sorry, I______. I don’t know either. I’m from Australia. A．Could; couldn’t B．Can; couldn’t C．Could; can’t D．Can; mustn’t 6．—Jenny, we buy Mom presents. We can clean the house from top to bottom.—Good idea! It’s a special present for Mother’s Day. A．can’t B．mustn’t C．shouldn’t D．needn’t 7．— May I have some wine? — No, you . You have to drive home later. A．shouldn't B．needn't C．mustn't D．may not 8．—Jack must be in his office, I think. —No, he be in the office. He flew to Canada this morning. A．needn't B．shouldn't C．can't D．mustn't 9．Since the road is muddy,it ________last night, ________? A．must be rained; wasn’t it B．must have rained; didn’t it C．must rained; didn’t it D．must have rained; wasn’t it 10．—Have you heard about the temperature of the earth will rise to 59℃ in 2020?—Don’t worry! The news _______ be true. A．must not B．may not C．needn’t D．will not 11．-_________ you help me with my homework? -Of course if I __________. A．Could; could B．Can't; can C．Could; can D．Can; could 12．—Must we finish the work right now? —No, you ________. You can do it tomorrow. A．needn’t B．shouldn’t C．mustn’t D．can’t 13．— Will Jim come to Yangzhou for a holiday? — He ________come, it depends on how much homework he will have.

语法知识—情态动词的全集汇编附答案

一、选择题 1．— I would like________ to see a movie. —It’s too late. You’d better ________alone. A．to go, go B．go, not go C．to go, not go D．going, go 2．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 3．(2018·山东临沂) Could you please speak a little louder? I ______ hear you very well. A．can’t B．mustn’t C．shouldn’t D．needn’t 4．— Do you think it is safe to shop online? — I think so. On Taobao, customers return goods with no questions asked，but they ______ pay delivery costs. A．can’t; can B．must; must C．can; have to D．mustn’t; can 5．The designer has tried every possible way to make the robot light, so you _____ worry about its weight. A．must B．may C．can’t D．needn’t 6．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 7．—I can't stop smoking, doctor. —For your health, I'm afraid you ________. A．must B．can C．may D．need 8．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 9．—Hi, Lucy, may I sit here? —No, ________. The seats are for teachers and parents. A．you needn't B．you aren't C．you mustn't D．you don't 10．—Must I finish my homework this evening? —No,you ________.You have a three﹣day holiday. A．won't B．mustn't C．needn't 11．—Sorry, Ms Wang. I left my homework at home. Must I hand it in today? —No, you_______ . You_______ bring it here tomorrow. A．mustn’t; should B．needn’t; must C．mustn’t; may D．needn’t; can 12．－Mum, must I stay there the whole day? －No, you__________. You__________ come back after lunch, if you like. A．mustn’t; can B．needn’t; must C．needn’t; may 13．—Jenny, we buy Mom presents. We can clean the house from top to bottom.

高中英语语法总结大全之情态动词

高中英语语法总结大全之情态动词情态动词的语法特征 1）情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。 2）情态动词除ought 和have 外，后面只能接不带to 的不定式。 3）情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。 4）情态动词没有非谓语形式，即没有不定式，分词，等形式。比较can 和be able to 1）can，could 表示能力；可能(过去时用could), 只用于现在式和过去式(could)。be able to可以用于各种时态。 They will be able to tell you the news soon. 他很快就能告诉你消息了。 2）只用be able to a. 位于助动词后。 b. 情态动词后。 c. 表示过去某时刻动作时。 d. 用于句首表示条件。 e. 表示成功地做了某事时，只能用was/were able to，不能用could。 He was able to flee Europe before the war broke out. = He managed to flee Europe before the war broke out. 注意：could不表示时态 1）提出委婉的请求，（注意在回答中不可用could）。 --- Could I have the television on? --- Y es, you can. / No, you can't. 2）在否定，疑问句中表示推测或怀疑。 He couldn't be a bad man. 他不大可能是坏人。比较may和might 1）表示允许或请求；表示没有把握的推测；may 放在句首，表示祝愿。 May God bless you!

初中英语语法知识—情态动词的图文答案(3)

一、选择题 1．—Jenny, we buy Mom presents. We can clean the house from top to bottom. —Good idea! It’s a special present for Mother’s Day. A．can’t B．mustn’t C．shouldn’t D．needn’t 2．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 3．―I didn’t pass the driving test again. ―Don't worry. Just like the weather, life be beautiful all the time. A．can't B．needn't C．shouldn't D．mustn't 4．—________your house be cleaned right now？ —No,it needn't.It may be cleaned this afternoon．（） A．Must B．May C．Can 5．—Is that cap Bob’s? —No, it ________ be his. His is blue. A．can’t B．mustn’t C．needn’t D．may not 6．（江苏省无锡市锡北片2017届九年级下学期期中考试）—Where are you going for your summer holiday? —We go to Yun Nan, but we haven’t decided yet. A．should B．will C．may D．must 7．—How nice the building is! What is it for? —It ________ a hotel. But I’m not sure. A．must be B．have to be C．may be D．can be 8．—______ you please tell me something about the life in Canada or America? —Sorry, I______. I don’t know either. I’m from Australia. A．Could; couldn’t B．Can; couldn’t C．Could; can’t D．Can; mustn’t 9．— I would like________ to see a movie. —It’s too late. You’d better ________alone. A．to go, go B．go, not go C．to go, not go D．going, go 10．— I wonder if these are Jim's glasses. —They _____his. He doesn't wear glasses. A．might be B．could be C．can't be 11．I see the blackboard. I need to have my glasses. A．can B．can’t C．must D．mustn’t 12．I’m sorry, childre n over 1.4 meters________pay the full price for the show. A．may B．must C．can D．ought to 13．—Jack must be in his office, I think. —No, he be in the office. He flew to Canada this morning.

情态动词语法讲解

Modal Verbs 情态动词有can (could), may (might), must (must), have to, shall (should), will (would), need (need), dare (dared), ought to 等。情态动词无人称和数的变化。它不能单独使用，必须跟其后的动词原形构成谓语。情态动词的具体用法如下：一、can, could 1、表示能力。 a. Can you speak English? b. Can you finish this work tonight? c. Man cannot live without air. Note:

(1) can表示能力时，可用be able to 代替。 a. I’ll not be able to come this afternoon. (2) 当我们要表示“某件事情已经成功”时，应用was/ were able to , 不能用could a. He saw well and he was able to swim to the river when the flood happened. b. He was able to go to the party yesterday evening and he enjoyed himself very much. 2、表示客观可能性

a. People who live near airports can have their hearing harmed. b. The boy can sometimes be very naughty. （表示某人或某物一时的情况，“有时会。。。”） c. The invention can be improve d. d. Even experts can make mistakes. e. He can’t be in Beijing now because I saw him a moment ago. f. He had a lot of work to do last night, so he couldn’t have gone to see a film. Note: 在肯定句中用can表示可能性时，其含义是理论上的可能性，不表示

英语语法总结：情态动词的使用

英语语法总结：情态动词的使用情态动词的使用 1）情态动词can（能够），must（必须），may（可以）结构：主语+can/must/may+动词原型 He can make the tea. Sally can air the room. We can speak English. ★变疑问句将情态动词移到句首 Can he make the tea? Can Sally air the room? Can we speak English? ★变否定句在情态动词后面加not

He cannot make the tea. Sally cannot air the room. We cannot speak English. ★肯定回答及否定回答 Yes, he can. / No, he cannot. Yes, she can. /?No, she cannot. Yes, we can. / No, we cannot. ★特殊疑问句：（必背） What can you do? 注意：情态动词的句子没有第三人称单数的变化，不要在情态动词或动词后面加s。

2）must/have to的区别 must 表示必须，是主观上觉得应该做，have to是不得不，是由于客观条件逼迫的必要要做 must 只能用在表示现在和将来的句子里，而have to do可以用在任何时态 3）must, may, might表示猜测： ·must do 表示对现在事实的猜测 ·must have done表示对过去事实的猜测 ·must have been doing 表示对过去正在进行的事实的猜测 ·may/might do, may/might have done表示没有任何事实依据的猜测，might的可能性更小。 4）can't/couldn't 表示不可能

英语情态动词语法知识及英语提分方法

英语《情态动词》语法知识及英语提分方法情态动词一、can和could 1、can的用法（1）表示体力和脑力方面的能力。（2）表示对现在的动作或状态进行主观的猜测，主要用在否定句和疑问句中。（3）表示可能性，理论上的可能性，意为“有时候可能会”，可用于肯定句。（4）表示允许，意思与may接近。（5）表示说话人的推测、怀疑、惊异、猜测或不肯定等，主要用于否定句、疑问句或感叹句中。（6）can的特殊句型 cannot…too / enough表示“无论怎么。。。也不过分”。“越。。。越好”。 cannot but+ do sth.表示“不得不，只好”。 2、could的用法（1）表示能力，指的是过去时间。（2）表示允许，指的是过去时间。（3）表示可能，可以指过去时间，也可以指现在时间，表示语气缓和。（4）委婉客气地提出问题或陈述看法，指的是现在时间。主要用于疑问句，回答时用can。 3、can与could的区别 can表推测时只用于否定句和疑问句（could无此限制）。couldn’t的可能性比can’t 小。 4、can与be able to的区别

（1）现在时：无区别，但后者不常用。（2）完成时;can没有完成时，此时要用have（has,had）been able to。（3）将来时：can没有将来时，要用will be able to。（4）过去时：could表示一般能力，was/were able to 表示在具体场合通过努力成功做成某事的能力。二、may 和might 1、may的用法（1）表示询问或说明一件事可不可以做。（2）表示一件事或许会发生或某种情况可能会存在，通常用在肯定句和否定句中。注意：表示可能性时，can’t语气强，表示“不可能”，may not语气弱，表示“可能不”。 2、might的用法（1）表示询问或允许，指的是过去时间。（2）表示可能发生的事，可以指过去时间，也可以指现在时间，语气更加不肯定，可能性比may小一些。 3、may与might的特殊用法（1）“may+主语+动词原形”表示祝愿。（2）“may/ might well+动词原形”表示（完全）能，很可能。（3）“may/ might as well+动词原形”表示最好，满可以，倒不如。（4）may be 是“情态动词+系动词be”结构，表示“可能有，可能在”，否定式为may not be。 maybe是一个词，为副词，意为“大概，或许，可能”，在句中作状语。

英语情态动词的用法大全附解析

英语情态动词的用法大全附解析一、初中英语情态动词 1．—We've got everything ready for the picnic. —Do you mean I __________ bring anything with me? A. can't B. mustn't C. couldn't D. needn't 【答案】 D 【解析】【分析】句意：—我们已经为野餐准备好了一切。—你的意思是我不必带任何东西吗？A. can't 不能；B. mustn't 表示禁止，一定不要；C. couldn't不能，表示过去时态；D. needn't不必。结合句意，故选D。【点评】本题考查情态动词的用法。 2．—How amazing this robot is! —Wow, it has video cameras in its eyes, so it “see” and interact with pe ople. A. may B. can C. must D. should 【答案】 B 【解析】【分析】句意：—这个机器人多么惊人啊！—哇，在它的眼睛里有摄像机，因此它能看见和人打交道。A. may 可以，可能；表示许可，B. can 能；表示能力，C. must 必须；D. should应该；根据it has video cameras in its eyes,可知是有能力看见，故选B。【点评】考查情态动词辨析。熟记情态动词的含义和用法。 3．—Where is George? —He _______ be here just now. His coffee is still warm. A. need B. can't C. must D. shouldn't 【答案】 C 【解析】【分析】句意：——乔治在哪里？——他刚才一定在这里，他的咖啡还是热的。A. need需要； B. can't 不能，不可能（表示推测）； C. must 必须，一定（表示推测）； D. shouldn't不应该；根据His coffee is still warm.可知表示肯定推测一定在这儿；故答案为C。【点评】考查情态动词。掌握情态动词表推测时的意义和用法。 4．— Sorry, I forgot to take money with me. Maybe I can't buy the book you like. — Mum, you ______ worry about it. We can pay by Alipay （支付宝）. A. can't B. needn't C. mustn't D. shouldn't 【答案】 B 【解析】【分析】句意：——对不起，我忘记带钱了。也许我不能买你喜欢的书。——妈妈，你不用担心。我们可以用支付宝支付。A. can't不能，指不允许或否定推测；B. needn't 不需，指没必要；C. mustn't不能，表禁止；D. shouldn't不应该，表建议。根据句意语境，本句是说妈妈不需要担心，故答案为B。【点评】考查情态动词。理解句意并掌握情态动词的意义和用法区别。

初中英语语法情态动词用法大全

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。情态动词句和疑问句中表示请求，允许，意为“能够” could 是can 的过去式，意为“能、会”，表示过去的水平在疑问句中表示委婉请求 may 表示请求、许可，意为“能够”表示推测，常用于肯定句中，意为“可能、也许” might 是may的过去式,表推测，常用于肯定句中，意为“可能、也许”must 表示主观看法，意为“必须、应该”表有把握的推测，用语肯定句dare 表示敢于，主要用于否定句和疑问句中 should 意为“应该”，表示要求和命令表示劝告、建议 had better 意为“最好”，表示建议 used to意为“过去常常，表示过去的动作、行为考点一情态动词知识清单情态动词有具体的词义，但也同助动词一样，需要与其他词语一起构成句子的谓语，另外情态动词没哟人称和数的变化，情态动词后必须跟动词原形。 1. can 的用法（1）表示水平、许可、可能性。表示水平时一般译为“能、会”，即有种水平，尤其是生来具备的水平，此时may 和must 均不可代替它。（2）表示可能、能够。如：I can finish it in an hour. （3）表示许可，常在口语中。如：You can use my dictionary. （4）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”。 2.could的用法（1）can的过去式，意为“能、会”，表示过去的水平。（2）could 在疑问句中，表示委婉的语气，此时没有过去式的意思。 3.may的用法（1）表示请求、许可，比can 正式，（2）表示推测，谈论可能性，意为“可能，或许”，一般用于肯定句中。（3）may的过去式为might ，表示推测时。可能性低于may 。 4. must的用法（1）must 表示主观看法，意为“必须、一定”。（2）其否定形式mustn’t表示“一定不要”“千万别”“禁止, 不许”.（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 . （4）must 表示有把握的推测，用于肯定句。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。 She must have finished writing, hasn’t she? 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。如：----Need I stay here any longer? ----Yes, you must .-----No. you needn’t . (2) need 还能够作实义动词，此时有人称、数和时态的变化，后边多接动词不定式。 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。（2）dare 作为实义动词，此时有人称、数即时态的变化。注意：在口语中，dare 的各种形式常与不带to 的不定式连用。Do you dare tell her what I said? 7. shall 的用法（1）shall 表示征求对方意见（多用于第一、三人称）， Shall we go out for a walk? （2）表示决心、警告、命令（多用于第二、三人称）， No one shall bring your beepers or mobile phones in the exam. 8. should的用法（1） should 意为“应该”，可表示劝告、建议、义务、责任等。We should protect the environment. （2） should (would)like to do sth. 表示“想要、愿意做某事”，常用于口语中。Would you like to go with me? 你想和我一起去吗？（3）Should have done 表示对过去动作的责备、批评。 You should have finished your homework. 9. will 的用法 will表示意愿、意志、打算，可用于多种人称。 I will help you if I’m free this afternoon. 10. had better 的用法 had better 意为“最好”，没有人称的变化，后面接不带to 的不定式，其否定形式为：had better not。 We had better go now. You had better not give the book to him. 考点二含有情态动词的疑问句 1. 由can、may、must构成的疑问句（1）句式：Can/ May/ Must…+ 主语+动词原形+….？如：Can you repair the car? Could he be a good student? May I borrow your ruler?Must we clean the room now? （2）对may 引出的问句，能够有下列回答方式：Yes, of course. Yes, certainly.Sure.No, you mustn’t.No, you can’t. （3）对must引出的疑问句，回答为：Yes, …must.No,…needn’t/don’t have to. 2. will，would，shall 的用法（1）will 在一般疑问句中表示客气的“请求、劝说”。would 是will 的过去式，语气更加客气、委婉。Would you show me your picture book? Will you please give me a call? （2）对will/ would you…的回答方式有以下几种：Yes, I will. (No, I won’t.)Sure . (I’m sorry , I can’t.)All right.Certainly. (No, thank you .) Yes, please. （3）shall引出的疑问句用于第一人称，表示征求对方意见或客气的请求。其回答方式有以下几种：Yes, please.All right. No, thank you. 考点三不同情态动词的否定意义也不同 1. （1）can’t可译为“不会”，如：I can’t play basketball. 我不会打篮球。（2）当句子表推测时，用can’t表达不可能，He can’t be ill. He is playing chess with Tom.（3）can’t还可用来回答“ May I …?”这样的问句。May I come in ?No, you mustn’t. / can’t.（4）can’t还可用于固定习语中。She can’t help crying. 2.may 的否定式为may not ，译成“可能不”，He may not be at home. 3.（1）mustn’t表示不许，不可。He mustn’t leave his room.

情态动词的语法特征

语法知识—情态动词的知识点总复习附解析

情态动词大学英语语法精解

(完整版)必修三unit2语法讲解情态动词用法

初中英语语法知识—情态动词的全集汇编及答案(3)

最新英语语法情态动词归纳总结

语法知识—情态动词的全集汇编附答案

高中英语语法总结大全之情态动词

初中英语语法知识—情态动词的图文答案(3)

情态动词语法讲解

英语语法总结：情态动词的使用

英语情态动词语法知识及英语提分方法

英语情态动词的用法大全附解析

初中英语语法情态动词用法大全