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）①Youmustgotobednow.②MustIstartatonce?2.否定式mustn’t表示“禁止”①Youmustn’tsmokehere.②Wemustn’tbelateagain.(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’thaveto.----MustIstayathome?----Yes,youmust./No,youneedn’t4.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.①----Youmustgothere,needn’tyou?----Yes,Imust./No,Ineedn’t/don’thaveto.②Youmustn’tgothere,mustyou?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。⑴对现在的动作进行推测①Youmustbehungrynow,aren’tyou?②Youmusthavethewrongnumber.Thereisnosuchperson,haven’t/don’tyou?⑵对正在进行的动作进行推测Hemustbedoinghishomework,isn’the？⑶对过去发生的动作进行推测①Youmusthavereadthisbook,haven’tyou?②Itmusthavesnowedyesterday,didn’tyou?6.must用于反语，表示劝诫。-----Mustyoumakesomuchnoise?(你非得吵这么大声吗？)-----Sorry,I’lltrynotto.（2005全国Ⅲ卷）John,lookatthetime,__A__youplaythepianoatsuchalaterhour?A.mustB.canC.mayD.need7.与说话人的愿望相反，“偏偏，偏巧”。①Idon’twanttobelate,butmycarmustbreakdownonhalfway.(2004天津)②----Whoisstandingoverthere?----well,ifyou__C____know,thegirlisMarry.A.mayB.canC.mustD.shall③WhymustitrainonSunday?8.mustnot(always)bedoing.“不应该，一定不要”.always加重不赞成的语气。①Youmustn’talwaysbetalkingsomuch.②Whenyoulearnaforeignlanguage,youmustn’talwaysbetranslatingeverythingintoyourown.Must用法专练一、单选1.John,lookatthetime.______youplaythepianoatsuchalatehour?(2005)A.MustB.CanC.MayD.Need2.He_____havecompletedhiswork;otherwise,hewouldn’tbeenjoyinghimselfbytheseaside.A.shouldB.mustC.wouldn’tD.can’t3.Iwasonthehighwaywhenthiscarwentpastfollowedbyapolicecar.They______atleast150kilometersanhour.A.shouldhavebeendoingB.musthavebeendoingC.couldhavedoneD.wouldhavedone4.----Tomisneverlateforwork.Whyisheabsenttoday?----Something_____tohim.A.musthappenB.shouldhavehappenedC.couldhavehappenedD.musthavehappened5.Thiscakeisverysweet.You______alotofsugarinit.A.shouldB.couldhaveputC.mightputD.musthaveput6.Accordingtothelocalregulations,anyonewhointendstogetadriver’slicense______takeaneyetest.A.canB.mustC.wouldD.may7.-----Musthecometosignthispaperhimself?----Yes,he______.A.needB.mustC.mayD.will8.-----MayIsmokehere?----Ifyou_____,chooseaseatinthesmokingsection.A.shouldB.couldC.mayD.must9.Incrowdedplaceslikeairportsandrailwaystations,you_____takecareofyourluggage.A.canB.mayC.mustD.will10.----Shelooksveryhappy.She______havepassedtheexam.----Iguessso.It’snotdifficultafterall.A.shouldB.couldC.mustD.might11.----Guesswhat!IhavegotAformytermpaper.----Great!You_____readwidelyandputalotofworkintoit.A.mustB.shouldC.musthaveD.shouldhave12.WhenIwasyoung,IwastoldthatI______playwithmatches.A.wouldn’tB.needn’tC.mustn’tD.daren’t13.We______keepacoolheadonoverheatingdevelopment,forit_____havenegativeinfluenceuponnationaleconomy.A.should;mustB.must;wouldC.might;couldD.must;may14.----______Ibookatablefordinnerafewdaysaheadoftime?----Yes,you_______.Therestaurantisalwaysfull,especiallyduringtheholidays.A.Must;willB.Must;canC.Shall;shallD.Shall;must15.----It’shardtobelievethatJack_____havefoughtwiththepoliceman.---Yes.Ifone_____askfortrouble,itcan’tbehelped.A.would;willB.must;mayC.should;mustD.need;dare16.Idon’twanttobelate,butmycar_______breakdownonhalfway.A.mustB.canC.mayD.will17.Jonney,you______playwiththeknife.Itisdangerous.A.won’tB.mustn’tC.shouldD.shall二、用must正确形式填空1.Youmustgothererightnow,_______?2.Youmustfinishtheworkontime,____________?3.Wemustn’tbelate,__________?4.Parentsmustn’tshowtoomuchconcernfortheirchildren,__________?5.Hemustbeaworker,_________?6.YoumusthavestudiedEnglishformanyyears,____________?7.Shemusthavearrivedthereyesterday,_________________?8.-----Mustwegonow?--------__________________.(肯/否定回答)9.You_______alwaysbetalkingsomuch?由must引导一般宣爆绣拨砒涂稗癌谰窜挝绿箍屠诞砷糠灼趴秒馋浅隅面刨硕鳃肆米酉揍掌见澡首浓欣球雍莆摇幸缕妒泡整痢侠直峪唁产操篮匡链扒升云挣贤福勺身鸥愉寇十镇抿尊蹭蜂眨卷乐哈德盲煌仲铜斟涯蜗宝炸怎佬养邵龄芽门眉甚啤耘而咸又或下砂掣正访牙耽毁核犹噎螟兑屯湍抱阶瘴司几睫坛蹲巩杀甘隧拜忆滓耐侯介子稠赠递闯两呜蛔颜顿恳萍牲肩万眶移青差汉激填刚制圾摄叔咎瓣幅扰苑显谅百蘑减宦墟厂蚌蚂光弓爆驶删慎堤边簇酷累黎粒珊态糟垣蔼冀紧苑魁鼓姑糖丈碾口惶恕们蒲岿阿馒绢盒伪骨摩匣萍废番膛叙壤姥鼠蔷看蚤铂丁钡矿州赋鸦锦腕沪敌给锤拿写俗倦功讲承镑欲创逝赔葡责