情态动词总结

一、 have done

（A表示“本....但是....”；B表示推测） A表示语法界有争议

1. should have done (A) 应该

shouldn’t have done (A)

2. ought to have done (A) 应该

ought not to have done (A)

3 need have done (A) 需要

Needn’t have done (A)

（1=2）

4. might have done (A,B) may have done(x) Might/may not have done (B)

5. could have done (A,B) can have done (x) Could/can not have done (B)

6. must have done (B)

Could/can not have done (B) Mustn’t have done(x)

二、 关于推测的种种

1、 一般来说

情态动词+ do 表示对现在的推测 情态动词+have done 表示对过去的推测

2、 强度

Must（必须）→ could（可能）→may/might（可能，也许）

三、 特殊的词shall

1、 我们一般见到这样的句子

He will go swimming.

We shall go swimming.

2、 但有时候，在情态动词领域

Shall用于第二、三人称，表示命令、警告、威胁、允诺、规定等

四、 特殊的词should

1、 我们一般见到这样的句子

He should have studied harder.

2、 但有时候，在情态动词领域的某些领域中

Should可以表示竟然

第二篇：情态动词总结

情态动词专项练习

1. You _____ return the book now. You can keep it till next week if you like.

A. can’t B. mustn’t C. needn’t D. may not

2. The fire spread through the hotel very quickly but everyone _____ get out.

A. had to B. would C. could D. was able to

3. — Is John coming by train?

— He should, but he _____ not. He likes driving his car.

A. must B. can C. need D. may

4. — It must be Mr. Li who did it. — No, it ______ be Mr. Li.

A. mustn’t B. wouldn’t C. can’t D. may

5. ---You needn’t do it right now, need you? ---Yes I am afraid I ______ .

A. need B. needn’t C. must D. mustn’t

6. You ______ finish reading the book as soon as possible.

A. may B. can C. need D. should

7. I am busy now, _______ my brother do it for you ?

A. Will B. Shall C. Must D. May

8. — When can I come for the photos? I need them tomorrow afternoon.

— They _____ be ready by 12:00.

A. can B. should C. might D. need

9. — Will you stay for lunch? — Sorry, _____. My brother is coming to see me.

A. I mustn’t B. I can’t C. I needn’t D. I won’t

10. — Shall I tell John about it? — No, you _____. I’ve told him already.

A. needn’t B. wouldn’t C. mustn’t D. shouldn’t

11. It’s still early, you _____.

A. mustn’t’t hurry B. wouldn’t’t hurry

C. may not hurry D. don’t have to hurry

12. A computer _____ think for itself, it must be told what to do.

A. can’t B. couldn’t C. may not D. might not

13. Everyone _____ do his best for the modernizations of our country.

A. can B. may C. should D. might

13. Please open the window, _____?

A. can’t you B. aren’t you C. do you D. will you

14. If you have something important to do, you ______ waste any time.

A. needn’t B. mustn’t C. may not D. won’t

15. A computer _____ think for itself, it must be told what to do.

A. can’t B. couldn’t C. may not D. might not

16. — Could I borrow your dictionary? — Yes, of course you _____.

A. might B. will C. can D. should

17. Where is my pen? I _____ it.

A. might lose B. would have lost C. should have lost D. must have lost

18. The plant is dead. I _____ it more water.

A. will give B. would have given C. must give D. should have given

19. — I saw Mr. Sun at Tongyu Station this morning.

— You ______. He’s still on holiday in Hawaii.

A. couldn’t have B. mustn’t have C. shouldn’t D. needn’t

20. I didn’t’t see her in the meeting room this morning. She _____ at the meeting.

A. mustn’t’t have spoken B. shouldn’t’t have spoken

C. needn’t’t have spoken D. couldn’t’t have spoken

21. Jane have come to the party, but she A. could; could B. might; could C. should; could D. should; would