复习情态动词

,English,MODEL,VERBS,Welcometo,中考专题复习,情态动词,有一定的词义，但词意不完整,不能单独作谓语，必须和实义动词连用,表说话人对某一动作或状态的态度和看法。情态动词后面跟动词原形，没有人称和数的变化。表示否定时在情态动词后加not(haveto除外),表示疑问时将情态动词提至主语前即可,常见情态动词,cancould的用法：1.Ability(能力),LiuXiangcanrunthe110mhurdleracewithin13seconds.,can/could:,1.can一般表示与生俱来的能力或者一种客观可能性，could表示过去的能力。,LearningEnglish_bedifficult.,can,Mancannotlivewithoutair.,LinglingcouldplaythepianoattheAgeofsix.,2.Can表示请求和允许。CanI.?意思是“我可以吗？”较口语化.,_CanIuseyourbike?Yes,youcan.No,youcantmaynot.,can/could:,2.在疑问句中，用could可表示请求，语气较委婉。肯定回答时,常用原形can或者may,不可再用过去式could。,_IwatchTVnow?Yes,you_./No,you_,Could,Heasksifhe_smokehere.,could,can/may,cant/Imafraidnot,can/could:,3.表示推测(只能用在否定句或疑问句中。),Itssolate.CanTombereading?,Hecantbeintheofficenow,forthelightisoff,1)can和could,表能力,表请求、允许,表推测(否、疑),could,1)Hecouldwritepoemswhenhewasten.2)Shecouldntunderstandmeatthattime3)CouldIaskyouaquestion?,表过去能力,表委婉请求,summary小结,can和beableto表示能力时用法相同。can只有现在和过去时，而beableto则有更多的时态形式。表经过努力,成功地完成某事，通常不用can,而用beableto(相当于manageto/succeedindoingsth)。,Thewoundedman_gettothevillageandwassavedintheend.A.couldB.wasableto,can/could,beableto区别,Attention:,can/beableto区别:,AbigfirebrokeoutinABChotelyesterday.Luckily,everyone_runoutofthebuilding.,wasableto,2.She_speakbothEnglishandFrench.,can,Imsotired!Ihavetodothetrainingforatleast10hoursaday!,must的用法1.表示义务,yethemustworkhardtowinthegoldmedal.,AlthoughLiuXiangissogifted(天赋的）inhurdlerace,Must指说话人认为“主观”上应尽的义务haveto:指根据约定,指说话人认为做某事有“客观”必要,Thetrainleavesat7oclock.I(must/haveto)gonowIdontlikemywatch.I_(must/haveto)buyanewone.,2.must表示肯定的猜测，译为“一定”，不能用于否定句或疑问句。Thismustbeyourpen.Hemustbedoinghishomeworknow.Hemusthavearrivedalready.,must,haveto表客观上的需要,可用于现在时、将来时和过去时。Must表个人意志和主观上的需要，用于现在时和将来时;表规章制度Must为必须,mustnt为禁止,回答must问句,肯定用must,否定用neednt或dont/doesnthaveto表不必;must还表示肯定的推测。,用Must,haveto填空1.IknowI_studyhard.2.Mymotherisill.I_lookafterherathome.,Must,haveto区别,must,haveto,must/haveto,must,例句,用法,1)YoumuststayhereuntilIcomeback.2)MustIhandinmyhomeworkrightnow?No,youneednt./donthaveto.Yes,youmust.,3)Thelightison,sohemustbeathomenow.,表主观看法,肯定句表推测,haveto,1)Itstoolate,Ihavetoleavenow.2)Youwonthavetowaitforme.,表客观需要,Summary小结,ShiDongpengmightwinamedalattheOlympicGames.,Althoughthechanceofwinningamedalissmall,Illtrymybest!,3maymight的用法：表示可能性may常用于肯定句中。might是may的过去式，表可能性小。,Attention:,veryuncertain,almostcertain,might,must,may,could,1.He_beathome.,2.He_beathome,forhejustcalledmefromhishome15secondsago.,A.mayB.mightC.must,A.mayB.mightC.must,(can),can,may/might,must表推测,Can用于否定句和疑问句,用来表示有把握的否定，相当于beimpossible;may/might相当于benotcertain,用于肯定句,might可能性低于may;must相当于becertain,表有把握的揣测。,用can,may/might,must填空1.Pleaseaskthatman.He_knowthat.2.Thelightison,sohe_beathome.3.It_beWeiFang.Sheisatschoolnow.4.AreyoucomingtoJeffsparty?Imnotsure.I_gototheconcertinstead.,may,must,cant,might,Attention:,They_bedoingtheexperimentinthelab.Why？Becausethelightsarestillburning.,A.couldB.canC.mustD.would,2May、minght表示允许或请求,MayIeatKFCifIwinthegoldmedal?,may/might:,1.表示许可。表示请求、允许时，might比may的语气更委婉一些。,Might/MayIuseyourcomputer?Yes,youcan./No,youcant/mustnt.,may/might:,2.用于祈使句中表示祝愿。,3.表示推测、可能（只用于肯定句，疑问句则要用can或could）。,祝你成功！,Mayyousucceed.,Hemaybeverybusynow.,Mayyoubehappyallyourlife.,may与might,may,用法,表请求许可,肯定句表推测,might,1)Heisawayfromschool.Hemightbesick.,表推测可能小,Letssummary小结,Shall的用法1、表示提出建议,Shallwedothetraininginthemorning?,Itstoohottotakeexerciseintheafternoon.,shall:,Shall用于第一称疑问句中，表示说话人征求对方的意见、向对方请示或提供帮助。,1.Shallwebeginourlesson?2.ShallIcarrythisbagforyou?,Should表示提出意见,Youshouldnoteatsomuchbeforerunning.,Howdelicious!,should:,.Should表示劝告、建议。,ShouldIopenthewindow?,我们应当要相互学习。,Weshouldlearnfromeachother.,shall和should,Shall,例句,1)Shallwegooutforawalk?2)Whatshallwedrink?,用法,征求对方意见,should,1)Weshouldprotectourenvironment.2)Youshoulddoitbetternexttime.,劝告建议义务责任,用shallshould填空。1.When_wemeet?2.You_seeadoctor.,shall,should,letssummary,will/would的用法:,1.表示意志、愿望和决心。,Iwillneverdothatagain.,will/would:,Attention:,Iwillgototheparkwithyoutomorrowifyouwilloffermelunch.,Question:Isthissentencecorrect?Why?,情态动词,表示“意愿”,will/would:,2.表示请求、建议等，would比will委婉客气。,sentencepattern,Wouldyouplease,Wouldyoumind,Wouldrather,Wouldyoulike,Wouldyouliketodosth?Yes,Idlike/loveto.Sorry,Ihavetodosth.Icant.,Wouldyoulikesth?Yes,please./Allright./Ok.No,thanks.,Would句型巧回答,日常生活中常用would问句,向对方礼貌地提出建议或邀请,我们尤其要注意口语交际中它的回答。,will/would,will,1)IwillhelpyouifIamfreethisafternoon.,例句,用法,意愿意志打算,would,1)ItoldhimthatIwouldgoalongwithhim.,2)Wouldyoupleasenotsmokehere?,3)WhenIwasachild,Iwouldgoswim-Mingwithotherchildreninsummer.,4)Iwouldhavetwowingsandthenflytothemoon.,主观愿意,征求意见,过去习惯,未来想象,letssummary小结,9.need,1)Need作情态动词时,表“必要”,多用于否定句或疑问句,一般不用于肯定句。回答need问句,肯定用must,否定用neednt。No,youneednt.NeedIstayhereanylonger?Yes,youmust.Weneednthurry.,2)need作实义动词,有人称、数和时态变化,后多接动词不定式。Heneedsanewcoat.,用Need的适当形式填空。1)He_moneynow.2)_she_tobringthebookhere?3)We_workthatday.(not)4)Theboy_anyhelp.(not),needs,Does,need,neednt/didntneedto,doesntneed,10.hadbetter,1)Wehadbettergonow.2)Youhadbetternotgivethebooktohim.,hadbetter,建议(最好做某事),Whenyouaresleeping,youhadbetter_Allyourwindowsclosed.(江苏南通)dontkeepB.notkeepC.NottokeepD.notkeeping,注意:hadbetter有强硬命令的语气,对长辈不宜使用,情态动词被动语态,1)Itmustbedone.2)Sixteen-year-oldsshouldnotbeallowedtogooutwiththeirfriendseveryday.3)ShoulditbedonebyLiMing？,肯定句:主语+情态动词+be+过去分词否定句:主语+情态动词+not+be+过去分词疑问句:情态动词+主语+be+过去分词,让我们现学现用吧！,Itmustbeaball.,Itmay/mightbeabasketballball.,Whatsthis?,情态动词考点揭密,1.-Dad,mustIfinishmyhomeworktoday？-No，you_.youmayfinishittomorrow.A.needntB.mustntC.dontD.wont2.-MayIputmybikehere?-No,you_.Youshouldputitoverthere.A.maynotB.mustntC.neednt,解答锦囊掌握情态动词问句的回答：MayI?Yes,may.No,mustnt/cant.MustI?Yes,must.No,neednt/donthaveto.,表示推测,1.-IsMr.Browndrivinghere？-Imnotsure.He_comebytrain.A.mayB.canC.needD.must2.-Whosthatboyreadinginthegarden?IsitDavid?-It_beDavid.Isawhimintheclassroomjustnow.A.mustB.cantC.mayD.neednt3.Imsurethisbook_LiLeis,becausethereishisnameonit.A.cantbeB.maybeC.mightbeD.mustbe,解答锦囊掌握推测用法:肯定可能性由Mustmaymight逐步递减;Cant则用于否定句、疑问句。,1.-Lisa,_youspeakFrench？-Yes,butonlya