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ModalVerbs情态动词情态动词是中学英语学习中的一个重点和难点，也是高考的重点考察内容之一。根据对历年来试题的分析,高考的热点依次是:1.)推测和可能性；2.)情态动词+havedone；3.)虚拟语气；4.)shall,should,can和must表特定语气.1.情态动词主要有:can,could,may,might,must,oughtto,shall,should,will,would,need,dare，hadbetter,etc.Someofuscanusethecomputernow,butwecouldn’tlastyear.Itwillbesunnyinthedaytime,butitcouldrainlateronthisevening.-----CanIgonow?-----Yes,youcan.Couldyouwaitafewdaysforthemoney?Canthisnewsbetrue?Howcanyoubesofoolish?表示“能力”表示“客观可能性”表示“请求和允许”表示“请求”,口语中代替can,使语气更委婉,主要用于疑问句,答语用can.----CouldIuseyourbiketomorrow?Yes,________.No,_______________.表示“惊异,怀疑,不相信的态度(主要用于否定句,疑问句和感叹句中)”youcanI’mafraid1.can和couldYes,wecan.Canwepassourcollegeentranceexamination?Yes,wecan.MayIwatchTVaftersupper?Yes,__________________./No,_______________________.MightIuseyourtelephone?MayIgohomenow?Itmaybetrue.Shemaycometomorrow.Hemighthavesomefever.Mayyousucceed!Mayyouhavemanymoredaysashappyasthisone!youmayYoumustn’t允许,许可禁止,阻止Might比May的语气更委婉表示可能性的推测,译为“大概,可能”用might时显得更加不肯定用于祈使句表示祝愿2.May和Might•Acomputer_______thinkforitself;itmustbetoldwhattodo.•A.can’tB.couldn’t•C.maynotD.mightnotA•may______________can____________表主观“可能”表客观“可能”•Cannot___________maynot__________不可能可能不3.may和canWeshouldbestrictwithourselves.Youshouldkeepyourpromise.Theyshouldhavearrivedbytwoo’clock.Ishouldadviseyounottodothat.Youaremistaken,Ishouldsay.AskTomtoringmeupifyoushouldseehim.ShouldIbefreetomorrow,I’llcome.Ifthingsshouldchangesuddenly,pleaseletmeknow.Whyshouldyoubesolatetoday?表劝告和建议应该表推测,“可能,应该”用于第一人称,表示说话人的一种谦逊,客气,委婉用于If从句中表示可能性很小的事情,译为“万一”“Why/How+should”表示说话人对某事不能理解.4should.•5.shall与should•--Excuseme,butIwanttouseyourcomputertotypeareport.•--You____havemycomputerifyoudon’ttakecareofit.•A.shan’tB.mightnot•C.needn’tD.shouldn’tAShall可表“警告、威胁、许诺、决心”等Whyshouldhethinkthat?Should表“劝告、建议”，译为“应当”；有时也表“预测”、“可能”或表示说话人的惊奇、愤怒、失望等感情。Whatshallwedonext?Shallwebeginourlessons?Shallthedriverwait?Shallhecomein?—Comein,please.Whenshallmyfatherbeabletoleavehospital?YoushallhavethebookwhenIfinishedit.Heshallbepunished.Youshallbepunishedifyouinsistondoingitthisway.用于第一,三人称,表征求对方意见或请示.用于第二,三人称陈述句中表命令,警告,允诺或威胁6.表对过去的推测:情态动词+have+down•对过去肯定推测:•对过去否定推测:•对过去的可能推测:•musthavedone•couldn’thavedone•mighthavedoneHemustbereading,________?Whathesaidcan’tbetrue,____________?Hemusthavegoneoverthearticle,_______?Itmusthaverainedlastnight,___________?7.表猜测语气的反意疑问句的构成isn’theisithasn’thedidn’tit•1).Youmustbetired,__________?•2).Youmustgohomerightnow,___________?•3).Youmusthaveseenthefilm,___________?•4).Hemusthavemetheryesterday,___________?aren’tyouneedn’tyouhaven’tyoudidn’tyou典型错误1.Hemustn’tbeintheclassroom,forIsawhimontheplaygroundjustnow.()can’t2.Youmightleavethebaginthehall.()mighthaveleft3.Youmusthaveseenthefilmlastweek,have’tyou?()didn’tyou4.ObamamusthavebeentoJapan,didn’the?()hasn’the情态动词的虚拟用法could本来可以做might本来也许可以needn’t原本不必做should本应该做shouldn’t本不应该做oughtto本应该做惋惜惋惜惋惜责备责备责备havedonehavedonehavedonehavedonehavedonehavedoneI_________________myexaminationeasilybutImadetoomanystupidmistakes.Ifwehadtakentheotherroad,we____________________________earlier.Youtheflowers,forit’srainingnow.Yousocareless.couldhavepassedmighthavearrivedneedn’thavewateredoughtnottohavebeen实战演练(practice)1.[04]I_____payTracyavisit,butI’mnotsurewhetherIwillhavetimethisSunday.AshouldB.mightC.wouldD.could2.[04]---Idon’tmindtellingyouwhatIknow.---You_____.I’mnotaskyouforit.A.mustn’tB.maynotC.can,tD.needn’t3.[04]---Mum,I’vebeenstudyingEnglishsince8o’clock._____IgooutandplaywithTomforawhile.--No,I’mafraidnot.Besides,it’srainingoutsideNow.A.Can’tB.Wouldn’tC.MaynotD.Won’t4.[04]---whoisthegirlstandingoverthere?----Well,ifyou______know,hernameisMable.A.MayB.canC.MustD.shall5.[04]You_____betired---you’veonlybeenworkingforanhour.AmustnotB.won’tC.can’tD.maynot6.[04]MrWhite______at8:30forthemeeting,buthedidn’tshowup.AshouldhavearrivedB.shouldarrivedC.shouldhavehadarrivedD.shouldbearriving7.[04]Ioftenseelightsinthatemptyhouse.DoyouthinkI____reportittothepolice?A.shouldB.mayC.willD.can8.[05]Ihavelostoneofmygloves.I_____itsomewhere.A.mustdroppedB.musthavedroppedC.mustbedroppingD.musthavebeendropping9.[05]Accordingtothelocalregulations,anyonewhointendstogetadriver’slicence____takeaneyetest.A.canB.mustC.wouldD.may•10.(06江苏21）---IthinkI’llgiveBobaring.•---You_______.Youhaven’tbeenintouchwithhimforages.•A.willB.may•C.havetoD.should•11．（2006北京25.）•---What’sthename?•---Khulaifi._______Ispellthatforyou?•A.ShallB.WouldC.CanD.Might•36．（2006全国卷）•24.There'snolighton-they______beathome.•A.can'tB.mustn't•C.needn'tD.shouldn't最新高考真题链接2010届高考真题再现•（10安徽）•32.Jackdescribedhisfather,who_______abraveboymanyyearsago,asastrong–willedman•A.wouldbeB.wouldhavebeen•C.mustbeD.musthavebeen2010年高考英语试题真题再现——情态动词考点：本题考查情态动词推测用法。解析：句意为“杰克把他的父亲描述为一个意志坚强的人，他的父亲多年前肯定很勇敢。”用musthavebeen表示对过去事情的肯定推测。答案：D.•（10湖南）•23.Youbuyagift,butyoucanifyouwantto.•A.mustB.mustn't•C.havetoD.don'thaveto考点：情态动词解析：don’thaveto意为“没有必要”，符合语境，句意为：“你没有必要买礼物，但如果你想买的话，你也可以买。”答案：D•（10江西）•23Ihavetoldyouthetruth.______Ikeeprepeatingit?•AMustBCanCMayDWill考点：考察情态动词的用法。解析：must必须,一定can可以,能够may也许will意愿,倾向