must的用法及練習(xí)

1、情態(tài)動詞must的用法must表示必要性，“必須（肯定句，疑問句常見）You must go to bed now.Must I start at once?2.否定式mustrVt表示禁止You mustnt smoke here.We mustn * t be late again,（不許我們再遲到了）3.由must引導(dǎo)一般疑問句時，肯定回答用must,否定回答用needn*或dont have to.Must I stay at home?Yes, you must, / No, you neednt4.當出現(xiàn)反問句式時，如果其陳述部分must表示“必須，有必要，時,反問句用neednt

2、,如果其陳述部分mustn*表示“禁止,反 問句用must.You must go there, needntyou?Yes, I must. / No, I needn t/don thave to.You mustntgo there, must you?5.must表示推測時，有3種形式時，反問句與must后的動詞保持一致。對現(xiàn)在的動作進行推測You must be hungry now, aren t you? You must have the wrong number. There is no such person, havent/don you?對正在進行的動作進行推測He m

3、ust be doing his homework, isrithe?對過去發(fā)生的動作進行推測 You must have read this book, havettyou? It must have sno wed yesterday, didrtyou?6. must用于反語，表示勸誡。Must you make so much noise?你非得吵這么大聲嗎？）Sorry, I * I try not to.（2005 全國皿卷）John, look at the time, A you play the piano at such a later hour? A, must B, c

4、an C, may D. need7. 與說話人的愿望相反，“偏偏，偏巧 O I dont 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. shall Why must it rain on Sun day?8. must not (always) be doing“不應(yīng)該，一定不要” .always 力口重贊成的語氣。 You mu

5、stnalways be taiki ng so much.(2) When you lear n a foreig n Ian guage, you must n always be tran slatingeveryth!ng into your own.Must用法專練John, Iook at the time, you play the piano at such alate hour? (2005)A. Must B. Can C. MayD. Need2. Hehave completed his work; otherwise, he wouldn t be enjoying

6、himself bythe seaside.A. should B. must C. wouldn t D. can t3.1 was on the highway when this car went past followed by a police car. Theyat least 150 kilometers an hour.A. should have been doing B. must have been doingC. could have doneD. would have done4. -Tom is never late for work. Why is he abse

7、nt today?Somethi ngto him.A. must happenB. should have happened5.C. could have happened D. must have happenedThis cake is very sweet. You a lot of sugar init.A. should B. could have put C. might put D. must have put6, According to the local regulati ons, any one who in tends to get a driver s lice n

8、setake an eye test.A. 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, choose a seat in the smoking section.A. should B. could C. may D. must9. In crowded places like airports and railway stations, youtake care of

9、yourluggage.A. can B. may C. must D. will10. She looks very happy. Shehave passed the exam.I guess so. It* s not difficult after alLA. should B. could C. must D. might11. - Guess what! I have got A for my term paper.-Great! Youread widely and put a lot of work into it.A. must B. should G must have D

10、. should have12. When 丨 was young, I was told that Iplay with matches.A. wouldn * tB. needn t C. mustn tD. daren * tkeep a cool head on overheating development, for it n egative influe nee upon national economy.A. should; must13. Wehave14.Yes, youA. Must; willB. must; would C. might; could D. must;

11、maybook a table for dinner a few days ahead of time? The restaurant is always full, especially during the holidays.B. Must; can C. Shall; shall D. Shall; must15. It s hard to believe that Jackhave fought with the policeman.Yes. If oneask for trouble, it can t be helped.A. would; will B. must; may G

12、should; must D. need; dare16. I don t want to be late, but my carbreak down on half way.C. may17. Jonney, you play with the knife. It is dangerous.A. must B, canD. willA wont B mustnt C. should D. shall二、用must正確形式填空1. You must go there right now, _2. You must finish the work on time,3.We mustnt be late,4.Parents mustn * t show too much co