must的用法及练习

1、1.情态动词 must 的用法must 表示必要性,“必须”（肯定句,疑问句常见）You must go to bed now.Must I start at once?2.否定式 mustn't 表示“禁止”You mustn't smoke here.We mustn't be late again. （不许我们再迟到了 ）3.由must引导一般疑问句时，肯定回答用must,否定回答用needn'或 don't have to. Must I stay at home? Yes, you must. / No, you needn't4.当出

2、现反问句式时,如果其陈述部分 must 表示“必须,有必要”时，反问句用neednt，如果其陈述部分mustn'表示“禁止”，反问句用 must.You must go there, needn'tyou? Yes, I must. / No, I needn't/don'thave to.You mustn'tgo there, must you?5.must 表示推测时, 有 3 种形式时, 反问句与 must 后的动词保持致。对现在的动作进行推测You must be hungry now, aren't you?You must have

3、 the wrong number. There is no such person, haven't/don 'you?对正在进行的动作进行推测He must be doing his homework, isrithe? 对过去发生的动作进行推测 You must have read this book, havertyou? It must have sno wed yesterday, didrtyou?6. must用于反语，表示劝诫。Must you make so much noise?你非得吵这么大声吗？）Sorry, I' try not to.（20

4、05全国皿卷）John, Iook at the time, A you play the piano atsuch a later hour? A. must B. can C. may D. need7.与说话人的愿望相反，“偏偏，偏巧”。I don' want to be late, but my car must break down on half way.（2004天津）Who is sta nding over there?-well, if you _Cknow, the girl is Marry.A. may B. can C. must D. shall8.Why

5、 must it rain on Sun day?must not （always） be doing. “不应该，一定不要” .always 力口重不赞成的语气。 You mustn'always be talki ng so much. When you lear n a foreig n Ian guage, you must n'always be tran slat ingeverything into your own.、单选Must 用法专练1.John, look at the time.you play the piano at such a late hou

6、r? (2005)A. Must B. Can C. MayD. Need2. Hehave completed his work; otherwise, he wouldn't be enjoying himself bythe seaside.A. shouldB. mustC. wouldn 'tD. can't3.I was on the highway when this car went past followed by a police car. Theyat least 150 kilometers an hour.A. should have been

7、 doingB. must have been doingC. could have doneD. would have done4. Tom is never late for work. Why is he absent today?Somethingto him.A. must happenB. should have happenedC. could have happenedD. must have happened5. This cake is very sweet. Youa lot of sugar in it.A. shouldB. could have put C. mig

8、ht putD. must have put6. According to the local regulations, anyone who intends to get a driver 'slicensetake an eye test.A. should B. couldC. mayD. mustA. can B. must C. would D. may7. Must he come to sign this paper himself? Yes, heA. need B. must C. may D. will8. May I smoke here? If you, cho

9、ose a seat in the smoking section.take care of your9. In crowded places like airports and railway stations, youluggage.A. can B. may C. must D. willhave passed the exam.10. She looks very happy. She I guess so. It's not difficult after all.A. shouldB. could C. mustD. might11. Guess what! I have

10、got A for my term paper.Great! Youread widely and put a lot of work into it.A. mustB. should C. must have D. should have12. When I was young, I was told that Iplay with matches.A. wouldn 'tB. needn'tC. mustn'tD. daren't13. Wekeep a cool head on overheating development, for ithavenega

11、tive influence upon national economy.A. should; must B. must; would C. might; could D. must; may14. -I book a table for dinner a few days ahead of time?Yes, you. The restaurant is always full, especially during the holidays.A. Must; willB. Must; can C. Shall; shall D. Shall; must15. It 's hard t

12、o believe that Jackhave fought with the policeman.-Yes. If oneask for trouble, it can't be helped.A. would; willB. must; may C. should; must D. need; dare16. I don't want to be late, but my carbreak down on half way.A. must B. canC. mayD. will17. Jonney, youplay with the knife. It is dangerous.A. won'tB. mustn'tC. shouldD. shall1.二、用 must 正确形式填空2.You must go there right now,You must finish the work on time,3.We mustn't be late,4.Parents mustn't show too mu