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情态动词1.Exercisingalonecanbeboring.2.Idon’tknowwheresheis,shemaybeinWuhan.3.Youmightberight.4.Heaskedifhecouldhaveacupofcoffee.1.can和couldManyofuscanusethecomputernow,butwecouldn’ttenyearsago.*(1)表“_____”,指现在和将来用___;指过去用_____.能力cancould•1.Thebabywill____walkinafewmonths.•AcanBcouldCbeableto•2.Thefirespreadveryquickly,butluckilyeveryone______getout.A.hadtoBwouldC.couldD.wasabletocan表示一个人长期的能力,beableto是表示一个较短暂的过程•can和beableto都可以表示能力.can泛指一般的能力,而且只有两种形式,即:can,could．beableto则主要指具体做到了某件事的能力，其形式主要是靠be发生变化，所以形式比can多•2.----__________Iuseyourbicycle?•----Ofcourse,you_______.•----No,you_______口语中can,could表示“许可”,could的语气比can委婉，但答语中不用could而用can.Can/Couldcancan’t•3.---Mr.Brownisontimeforeverything.Howcanhebesolatefortheimportantmeeting?•Can表示“惊讶，怀疑，不相信”的态度（否定句和疑问句）•4.1)_____(可能)thenewsbetrue?•----It______betrue.(不可能)2)He_______________(可能)beonhiswayhomenow.•Can表示猜测的“可能”，用于_____________,“could”用于______,_____,_____(语气_______)CanCan’tcould(may\might)否定句疑问句肯定句否定句疑问句比Can弱注•1.Accidentcanhappenonsuchrainydays.•2.Evenexperiencedteacherscanmakemistakes.3.Childrencanbenaughty.can在肯定句中表示“有时候会”指一种客观的可能性.常用来说明人或事物特征•TheWorldWideWebissometimesjokinglycalledtheWorldWideWaitbecauseit__beveryslow.A.shouldB.mustC.willD.can•We_____gotothecinematonight,butwearenotsure.•A.canBmayCmust•may\might•1)表示许可或征询对方许可•---_________Iuseyourtelephone?•---Yes,you______.•---No,you_______.May\Mightmaymustn’t•2)表推测•1）He____________(可能)cometoday,butI’mnotsure.•2)This__________bedonebyhim.(可能不)•3)Ithoughtyou_____likesomethingtoread,soIboughtsomebooksforyou.•A.mayBmightmay\mightmaynot“可能”，用于肯定句和否定句只有宾语从句中might表过去的可能性•4）--Whyhasn’tJackcomebackyet?____anythinghavehappenedtohim?----Iamnotsure,butIguesssomething________happened.AMay;musthaveBCan;mighthave(3)may+主语+动词原形“祝某人/物…”不用mightMayyousucceedinthecomingexam!Mayourfriendshiplastforever!祝您美梦成真。祝您的生活美满幸福。Mayyouliveahappylife.Mayallyourdreamscometrue.•1.----IsJackondutytoday?----It__behim.It’shisturntomorrow.A.mustn’tB.won’tC.can’tD.needn’t•2.Well,he__havegonefar–hiscoatisstillhere.A.shouldn’tB.mustn’tC.can’tD.wouldn’t•3.Who______itbeatthistimeofday?•AcanBmay•4.Heisverybusy.He______bewatchingTVathome.AmaynotBcan’t•5.Theclimateofthesouth_____berathercoldinwinter.•AwouldBcanCmust6.----____Iuseyourbicycle?----Ofcourse,you____.A.Can;couldBCould;can•7.HesaidthatI_____usethephone.•AmayBmight•8.Themanlooksenergetic,sohe_____beill.AmaynotBcan’tNotice:may/mightnot可能不（语气不肯定）can/couldnot不可能（语气肯定）1.Hemaynotbeill.他可能没病。2.Hecannotbeill.他不可能有病。9.Helen___goonthetripwithus,butsheisn’tquitesureyet.A.ShallB.mustC.mayD.can10.We___haveprovedgreatadventurers,butwehavedonethegreatestmarchevermadeinthepasttenyears.A.needn’tB.maynotC.shouldn’tD.mustn’tmaynothavedone这是情态动词的完成时态，表示“可能没有完成