模块5语法复习-情态动词-虚拟语气

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1、模块5语法复习情态动词虚拟语气Modalscancouldmaymightmusthadtoshallshouldwillwouldoughtto----daredaredneed------usedto基本用法amodalverb+doamodalverb+bedoingamodalverb+havedone现在状况现在动作过去动作/状态1.表示能力：can,beableto2.表示推测（可能）理论上的可能：can,肯定句和疑问句中具体事情实际发生的可能：may,might肯定句，否定句表示推测（一定）Must一定是Can’t一定不是可能性由小到

2、大：Can’t---may/mightnot—might-may-could-can—must3.表示请求、允许、允诺Can/couldI….?May/mightI…?ShallI…?Shallhe..征求决策者命令、警告、允诺或威胁P89He/youshall…4．表示必要性Needto/don’tneedtoNeedn’tMustMustn’tShould5.宁愿做某事WouldratherdosthWouldratherdosththandosthWoulddosth.ratherthandosth.Wouldrathersb.didsthPre

3、fertodosth.Prefertodosth.ratherthandosth.Preferdoingtodoingsth.6.情态动词对过去情况的推测Can’t/couldn’thavedone-may/mighthavedonemusthavedoneNeedn’thavedoneshouldhavedoneShouldn’thavedonecanhavedone7.情态动词的其他用法1）can’tbutdo不得不，只好2）Maywell/mayaswelldosth.完全能，很可能3）Mayyousucceed.感叹句4）Should+表示惊讶

4、对某事不理解，感到意外、惊讶等How____agentlelikehimbesounfriendlytoawoman!should8．Need,dare情态动词和实意动词用法他需要马上就走。他不需要马上就走。他不敢马上就走。Heneedstogoatonce.Doesheneedtogoatonce?Hedoesn’tneedtogoatonce.Heneedn’tgoatonce.Hedoesn’tdaretogoatonce.Hedarenotgoatonce.1.Peter____bereallydifficultattimeseventhoug

5、hhe’sanicepersoningeneral.A.shallB.shouldC.canD.mustC2.ItisusuallywarminmyhometowninMarch,butit____berathercoldsometimes.A.mustB.canC.shouldD.wouldB3.Thetrafficisheavythesedays.I____arriveabitlate,socouldyousavemeaplace?A.canB.mustC.needD.mightD4.Somepeoplewhodon’tliketotalkmuch

6、arenotnecessarilyshy;they____justbequietpeople.A.mustB.mayC.shouldD.wouldB5.–How’syourtouraroundtheNorthLake?Isitbeautiful?--It____be,butitisnowheavilypolluted.A.willB.wouldC.shouldD.mustC6.–WhencanIcomeforthecomputer?IneeditnextTuesday.--It____berepairedbynextMon-dayafternoon.A

7、.canB.shouldC.mightD.needB7.Thisprinterisofgoodquality.Ifit____breakdownwithinthefirstyear,wewouldrepairitatourexpense.A.wouldB.shouldC.couldD.mightB8.Youcan’timaginethatawell-behavedgentleman____besorudetoalady.A.mightB.needC.shouldD.wouldC9.—Whatdoesthesignoverthereread?--”Nop

8、erson____smokeorcarryalightedcigarette,cigarorp