情态动词shall,should, must 用法及练习

Modalverbs1.shall(1)用于疑问句与第一、三人称连用，表示征求意见或请求许可。•1)Shallwegooutforamealtogether?•2)Shallthenewcomerhaveatry?•1.---Theroomissodirty.______wecleanit?•----Ok.•AwillBShall•CWouldDDo(2)用于肯定句与二、三人称连用，表示说话人的允诺，决心，威胁，警告，命令，或法律、文件的规定。•Nothingshallstopmefromgoingthere.•Youshallbesorryforwhatyouhavedone,Itellyou.决心威胁/警告•3.Youshallgetanmp5asyourbirthdaypresentthisyear.•4.Thefineshallbepaidincash.•5.Personsunder18shallnotbeemployed.（允诺）（规定）（规定）“Theinterest(利息)__bedividedintofiveparts,accordingtotheagreement,”declaredthejudge.A.mayB.shouldC.mustD.shall•2.should•1).Childrenshouldbedevotedtotheirparents.•2).Youshouldn’tbesocareless.oughtnotto•2）比较有依据的推测将来某种情况，•“按理说会，估计会”•1)It’s2:30,Theyshouldbeherenow.•2)Theglassesshouldbeenoughforeachguest.•3)Weshouldarrivebeforedark.•4)Theroadsshouldbelesscrowdedtoday.•(3)表示惊讶、遗憾、“竟然，居然”•I’mgladthathissonshouldhavewonthefirstprize.•It’sstrangethatheshouldfailagain.•Youcan’timaginethatawell-behavedgentleman___besorudetoalady.•A.mightB.needC.shouldD.would•There__beanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.(05上海)A.mustn’tB.shan’tC.shouldn’tD.needn’t•---WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.•---They___bereadyby12:00.•A.canB.should•C.mightD.need•It’snearlyseveno’clock.Jack__behereatanymoment.•A.mustB.need•C.shouldD.can•3.must•----MustIdoitatonce?----Yes,you______./----No,you_____.(=No,you___________mustneedn’tdon’thaveto)•Youmustn’twasteanymoretime.•Youmustnotsmokehere.•禁止,不可以,千万别•2)肯定推测，“一定，准是”（只能用于肯定句）•1.Shemustbetiredaftersuchalongwalk.•2.Hemustbesleepingnow.•---Hi,Tom.AnyideawhereJaneis?•---She_____intheclassroom.Isawhertherejustnow.AshallbeBshouldhavebeenCmustbeDmighthavebeen(3)must表示固执,不满,意为“偏偏，偏要,非得”•----MayIsmokehere?----Ifyou__,chooseaseatinthesmokingsection.A.shouldB.couldC.mayD.mustJohn,lookatthetime,__youplaythepianoatsuchalatehour?A.MustB.CanC.MayD.Need•1.Whymustyoualwaysbreakinwhenothersaretalking?•2.Ifyoumustbreakthelaw,ofcourse,youwillbepunished.•1.Treesaregoodforman.Wecan’tplantthem_____many.•AsoBsuch•CtooDenough•2.Inarelyrace,aplayercan’trunfast_____.•AsoBsuch•CtooDenough