情 态 动 词

Can 1. 能力 2. 可能 3. 许可 4. 请求

May 1. 允许或请求允许 2. 可能性

Must 1. 必须 / 应当 2. 表示推测，语气比 may 肯定，只用在肯定句中

1. 二．三：允诺 . 警告 . 命令或法令等2. 一：征求听话人的意见

shall

Should 1. 应当 2. 委婉地陈述自己的意见 3.should have done 4. 表示可能性，尤指合乎理想的事情和结果。

ought to

应当 =should( 强调法律和职责等方面的客观义务时，宜用 ought to)

Will 1. 用于各种人称表示决心和意愿 2. 用于第二人称疑问句，表示请求， 建议和征求听话人的意见 .

Would 1. 用于各种人称，表示过去的“意志” “ 意愿”“决心”等。 2. 表示现在的请求或个人想法， 比用 Will 语气更加委婉。 3. 表示过去习惯性的动作

dare: 敢 1. （否定句，疑问句，条件状 语从句） 2. 实义动词need: 需要 . 1. 情态动词否定句，疑问句， 2. 实义动词

1.---Could/might I use your bike tomorrow morning? ---Yes, you can/may ---No, I’m afraid not

2.cannot~ ~too/enough 无论怎么……也不（过分） 越……越好3.cannot but do sth. 不得不；只好 I cannot but admire your bravery. I could not but choose to go.

1.Johnny, you______ play with the knife, you______ hurt yourself.

A.won’t , can’t B.mustn’t, may

C.shouldn’t ,must

D.can’t, shouldn’t

2. Jack______ yet, otherwise he would have telephoned me.

A.mustn’t have arrived

B.shouldn’t have arrived

C.can’t have arrived

D.need not have arrived

3.----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

will probably 表示可能性 , 尤指合乎理想的事情或结果1.The photos should be ready tomorrow morning.2. It should be fairly easy to get her to agree.3.There shouldn’t be any difficulty about getting you a visa.

4. ----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

5.Sorry I’m late. I______ have turned off the alarm clock and gone back to sleep again.

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

6 ． ----Are you coming to Jeff’s party? ---- I’m not sure. I _____ go to the concert

instead. A. must B. would C. should D. might

7.My sister met him at the Grand Theatre yesterday afternoon, so he_____ your lecture.

A. couldn’t have attended

B. needn’t have attended

C. mustn’t have attended

D. shouldn’t have attended

8. I was really anxious about you. You _______home without a word.

A. mustn’t leave

B. shouldn’t have left

C. couldn’t have left

D. needn’t leave

9.---Is John coming by train? --- He should , but he____ not. He likes driving his car.

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

10.Naturally, after I told her what to do, my daughter ____ go and do the opposite!

A.may

B. can

C. must

D. should

11. I often see lights in that empty house. Do you think I ____ report it to the police?

A.should

B. may

C. will

D. can

12.---I don’t mind telling you what I know. ---You______. I’m not asking you for it.

A.mustn’t

B. may not

C. can’t

D. needn’t

13.---I’ll tell Mary about her new job tomorrow.

----You_____ her last week.

A.ought to tell

B. would have told

C. must tell D. should have told

14. “The interest ______ be divided into five parts, according to the agreement made by both sides, ” declared the judge.

A. may

B. should

C. must

D. shallShall 可以用在条约、协议、法令等文件中，表示义务或规定，一般用于第三人称，意为“应， 必须”。

15.----Isn’t that Ann’s husband over there? ----No, it_____ be him----I’m sure he do

esn’t wear glasses.

A.can’t

B. must not

C. won’t

D. may not

16.Tom, you _______ leave all your clothes on the floor like this!

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

17.John, look at the time._______ you play the piano at such a late hour? A. Must B. Can C. May D. Need

18.There______ be any difficulty about passing the road test since you havepractised a lot in the driving school. A. mustn’t B. shan’t C. shouldn’t D. needn’t

19.----Lucy doesn’t mind lending you her dictionary.

----She_________. I’ve already borrowed one.

A.can’tB.mustn’tC.needn’tD.shouldn’t

20.The World Wide Web is sometimes jokingly called the World Wide Wait because it______ be very slow. A.should B. must C. will D. can

21.He paid for a seat, when he_______ have entered free. A. could B. would C. must D. need

could have done: 过去可以做而实际上未能做某事

22.---Catherine, I have cleaned the room for you. ---Thanks. You______ it, I could manage it myself. A. needn’t do B. neen’t have done C. mustn’t do D. shouldn’t have done

23. He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t

24.I_____have been more than six years old when the accident happened. A. shouldn’t B. couldn’t C. mustn’t D. need’t

Goodbye!