情态动词 (2).ppt

第十二讲语法专题五情态动词的用法：,Stepone:PreviewingTest:,1.你知道的情态动词有哪些？2.表请求许可的情态动词有哪些？3.表推测的情态动词有哪些？,SteptwoTeachingaims:,情态动词的用法,StepThreeStudyagainbyleading:,1.can的用法有哪些？表示能力“能，会”eg:HecanspeakalittleJapanese.表示请求或许可“可以”，用于各种人称eg:CanIhelpyou?在肯定句表理论的推测,不涉及某事是否会发生,关键词sometimese.g.ItisusuallywarminmyhometowninMarch,butitcanberathercoldsometimes.,2.may的用法：表示请求或允许“可以”“准许”常用于第一人称eg:MayIgohome，please?,3.must的用法：1）表示义务、必要或命令“必须、应该”eg:Youmustcomeearlytomorrow2）mustnot禁止，不许eg:Youmustnottelllies.3)“非得,偏偏Mustyoumakesuchanoise?,注意：must开头的疑问句，其否定回答通常用_eg:-MustIfinishmyhomeworkfirst?-No,you_.,donthaveto或neednt。而不用mustnt,4.need,1)既可作实义动词，又作情态动词。need作情态动词只用于疑问句，否定句和条件句,2)实义动词:need+n./todosth情态动词：need，只用原形need后加do，否定形式为neednot。你今天下午不必来。eg:Youneedntcomeherethisafternoon.Youdontneedtocomeherethisafternoon.我今天下午需要来吗？NeedIcomeherethisafternoon?DoIneedtocomeherethisafternoon?,3)need的被动含义：need,want,require,后面接doingneeddoing=needtobedone这块手表需要修理Thewatchneedsrepairing.Thewatchneedstoberepaired.,Needyou?Yes,Imust.No,IneedntMustyou?Yes,Imust.No,Ineednt./donthaveto.,5.征求许可或给予许可的句子有哪些?Can/CouldI/you.?”May/MightI?Will/Wouldyou?ShallI/he?“Could/Might/would.?”如何做出回答？,CouldI?-Yes,youcan./-No,youcant.MightI?-Yes,youmay./No,youmustnt/youcantWouldyoudomeafavor?Yes,Iwill.,StepFourTrainingandTesting,David,you_playwiththevaluablebottle,you_breakit.A.wont;cantB.mustnt;mayC.shouldnt;mustD.cant;shouldnt,-WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.-They_bereadyby12:00.A.canB.shouldC.mightD.need,1.Thephotosshouldbereadytomorrowmorning.2.Itshouldbefairlyeasytogethertoagree.3.Thereshouldntbeanydifficultyaboutgettingyouavisa.,Naturally,afterItoldherwhattodo,mydaughter_goanddotheopposite!mayB.canC.mustD.should,-IdontmindtellingyouwhatIknow.-You_.Imnotaskingyouforit.mustntB.maynotC.cantD.neednt,“Theinterest_bedividedintofiveparts,accordingtotheagreementmadebybothsides,”declaredthejudge.A.mayB.shouldC.mustD.shall,Shall可以用在条约、协议、法令等文件中，表示义务或规定，一般用于第三人称，意为“应，必须”。,lookatthetime._youplaythepianoatsuchalatehour?A.MustB.CanC.MayD.Need,TheWorldWideWebissometimesjokinglycalledtheWorldWideWaitbecauseit_beveryslow.A.shouldB.mustC.willD.can,(2009辽宁高考)Thetrafficisheavythesedays.Iarriveabitlate，socouldyousavemeaplace？A.canB.mustC.needD.might,解析：选,D,(2009上海高考)IthavebeenTomthatparkedthecarhere，asheistheonlyonewithacar.A.mayB.canC.mustD.should,解析：选,C,ThatmanmustbeSarahshusband.-No,he_beherhusband.Sheisstillsingle.A.cantB.mustntC.maynotD.oughtto,What_itbe?-It_beamailbox,foritismoving.It_beacar.A.can;cant;mustB.can;can;mustC.can;mustnt;mustD.must;mustnt;canLook,someoneiscoming.Guess_.-Jack.Hesalwaysontime.A.whocanitbeB.whohemay