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1、Unit7AbilitiesGrammar1It____rideabikenow,Butit______rideabikelastyear.Task1.Totalkaboutabilities.Step1.Freetalkcancouldn’tShe______rowaboat.Butshe________rowaboatin2014.cancouldn’trideabikeNowthegirlcan...butshecouldn’t...2yearsago.playbadmintonNow...can......couldnot/couldn’t...inthepast.swim
2、Now...can......couldnot/couldn’t...lastmonth.flyakite/kitesNow...can......couldnot/couldn’t...lastweek.cancould用于一般现在与将来时用于一般过去时Using“can”/“could”totalkaboutability.Step2.ConclusionWeuse“can”totalkaboutpresentability.Weuse“could”totalkaboutabilityinthepast.Step3.MakeadialogueA:Ican(cannot/can’
3、t/cannot)swim.Whataboutyou?B:Ican….ButIcouldn’t…lastyear.Step4.Realtimepractice1.___(can)Simonflyakitebefore?No,he_____.2.Theman___(can)writewithhislefthand.3.MrsSun____(cannot)getoutbecauseshehurtherleg.4.What___Idoforyou?(can)5.Theman___swimacrosstheriverwhenhewasyoung.(can)6.___(can)Ismokeh
4、ere?No,you___.Lookatthesign.1.---CanIborrowyourbike,Millie?---Yes,youcan.Hereyouare.2.---CouldIsmokehere?---Sorry,I’mafraidyoucan’t.3.---MayIuseyourmobilephone?---Ofcourseyoumay.Step5.DiscussandfindoutthedifferenceTask2.Toaskforpermission.Step1.Learnbyyourselves.1.can与couldcan常用于口语中，表示非正式的请求，请
5、求对象一般是家人或朋友。e.g.—CanIborrowyourbike,Simon?西蒙,我可以借一下你的自行车吗？—Ofcourse.当然可以。—CanIhavesomemilk,Mum?妈妈，我可以喝点牛奶吗？—Yes,youcan.好的。could是can的过去式。在口语中，could常用来代替can向对方更委婉地提出请求，用法上比can正式，可以用于向老师或长辈提出请求，这时could不表示过去，回答一般还是用can。e.g.—CouldIuseyourcomputer,please?请问，我可以用一下你的电脑吗？—Yes,youcan.可以。—CouldIhandinou
6、rhomeworklater,MrLin?林老师，我可以稍后交作业吗？—No,youcan’t.不，不行。2.maymay也可以用来征求对方意见，意为“可以”，相当于could，用法也比can更正式，更礼貌，一般用于向陌生人或所尊敬的人请求许可。e.g.—MayIaskyouaquestion?我可以问你一个问题吗？—Yes,please.可以，请问。—MayIcomein,MrWu?吴老师，我可以进来吗？—No,youcan't.不行。Step2.practice1.Dick,_____Iuseyoure-dictionary?--Yes,please._____yougivei
7、ttoMikeafteryouuseit?A.will;WouldB.may;MightC.can;CouldD.shall;ShouldCouldIhavesomebottlesoforange?Yes,you_____.A.doB.couldC.wouldD.can3.MayIgoswimmingalonethisafternoon,Dad?No,you_____.Itisdangerous.A.maynotB.mustn’tC.needn’tD.don’tcDB
