must的用法及练习

情态动词 must 的用法 1 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 t 或 don t have to Must I stay at home Yes you must No you needn t 4 当出现反问句式时 如果其陈述部分 must 表示 必须 有必要 时 反问句用 needn t 如果其陈述部分 mustn t 表示 禁止 反问句用 must You must go there needn t you Yes I must No I needn t don t have to You mustn t go 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 持一致 对现在的动作进行推测 You must be hungry now aren t you You must have the wrong number There is no such person haven t don t you 对正在进行的动作进行推测 He must be doing his homework isn t he 对过去发生的动作进行推测 You must have read this book haven t you It must have snowed yesterday didn t you 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 ll try not to 2005 全国 卷 John look at the time A you play the piano at such a later hour A must B can C may D need 7 与说话人的愿望相反 偏偏 偏巧 I don t want to be late but my car must break down on half way 2004 天津 Who is standing over there well if you C know the girl is Marry A may B can C must D shall Why must it rain on Sunday 8 must not always be doing 不应该 一定不要 always 加重不 赞成的语气 You mustn t always be talking so much When you learn a foreign language you mustn t always be translating everything into your own Must 用法专练用法专练 一 单选 1 John look at the time you play the piano at such a late hour 2005 A Must B Can C May D Need 2 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 3 I was on the highway when this car went past followed by a police car They at least 150 kilometers an hour A should have been doing B must have been doing C could have done D would have done 4 Tom is never late for work Why is he absent today Something to him A must happen B should have happened C could have happened D must have happened 5 This cake is very sweet You a lot of sugar in it A should B could have put C might put D must have put 6 According to the local regulations anyone who intends to get a driver s license take an eye test A can B must C would D may 7 Must he come to sign this paper himself Yes he A need B must C may D will 8 May I smoke here If you choose a seat in the smoking section A should B could C may D must 9 In crowded places like airports and railway stations you take care of your luggage A can B may C must D will 10 She looks very happy She have passed the exam I guess so It s not difficult after all A should B could C must D might 11 Guess what I have got A for my term paper Great You read widely and put a lot of work into it A must B should C must have D should have 12 When I was young I was told that I play with matches A wouldn t B needn t C mustn t D daren t 13 We keep a cool head on overheating development for it have negative influence upon national economy A should must B must would C might could D must may 14 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 will B Must can C Shall shall D Shall must 15 It s hard to believe that Jack have fought with the policeman Yes If one ask for trouble it can t be helped A would will B must may C should must D need dare 16 I don t want to be late but my car break down on half way A must B can C may D will 17 Jonney you play with the knife It is dangerous A won t B mustn t C should D shall 二 用 must 正确形式填空 1 You must go there right now 2 You must finish the work on time 3 We mustn t be late 4 Parents mustn t show too much conc