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时间:2020-03-22
《英语:Unit1 《Festivals around the World》教学教案(新人教必修3).ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、canandcouldmayandmightwillandwouldshallandshouldmustandcan’t情态动词用法ks5u精品课件HecantakepartintheOlympics.Hemaywinthegoldenmedal.Towinit,hemustrunfaster.ks5u精品课件Hecan…Hemay/might…Hemust……ks5u精品课件CanCouldks5u精品课件Sohecancarryheavybooks.Hecouldn'topenthedoorbyhimself.Couldyouopenthedoor,please?a
2、bilityabilityrequestks5u精品课件1)表示能力(ability),指有能力做某事,意为“能够”。例如:注意:表示现在,将来“能够”可用beableto替换。表示过去“能够”并成功了只能用was/wereableto,不能用could。例如Mygrandmaisovereighty,butshecan/isabletoreadwithoutglasses.Wecan/willbeabletotalkaboutthematterlater.Italkedwithherforalongtime,andatlastIwasabletomakeherbeli
3、eveme.(不能用could)can和could:ks5u精品课件2)表示请求(request)或(permission)。意为“可否”、“可以”。Could比can更有礼貌,在此不是can的过去式。Canyouwaitamomentplease?Liz,canyoudomeafavor?Excuseme,couldyoutellmethewaytothestation?Iwonderifyoucouldhelpme.(request)ks5u精品课件----CouldIuseyourphone?----Yes,ofcourse.Youcan.DoyouthinkIc
4、ouldborrowyourbike?(permission)3)表示可能性(possibility)a.can表示泛指的“可能”,并非说话者主观认为的可能性,即并非说话者的主观猜测。Accidentcanhappentoanydrunkendriver.ks5u精品课件b.表示说话者主观猜测,只能用与否定句或疑问句中。例如:Itcan’tbemyfather.HeisnowinEngland.----Canitraintomorrow?----No,itcan’t.ks5u精品课件maymightks5u精品课件Hemaybeinhisoffice.=(perhap
5、sheisinhisoffice.)Hemightbehavinglunch.=(perhapsheishavinglunch.)ks5u精品课件may和might:1)表示可能性(possibility),用于对现在,过去或将来的推测,暗示不确定。might不是may的过去式,它所表示的可能性比may小,含较多的怀疑。Hemaybeverybusynow.(可能性较大)Hemightbeverybusynow.(可能性较小)ks5u精品课件2)表示许可(permission),表示允许别人做某事,也可征求对方的许可。Hemaygonow.Wemaykeepthebo
6、okfortwoweeks.3)用于祈使句,表示祝愿。Mayyousucceed!Mayyouhaveanicetrip!ks5u精品课件1.They(can/might)___________beawayfortheweekendbutI’mnotsure.2.You(may/might)__________leavenowifyouwish.3.(could/may)__________youopenthewindowabit,please?4.He(can/could)__________befromAmerica,judgingbyhisaccent.5.(ma
7、y/can)___________youswim?6.Listen,please.You(maynot/mightnot)_________________speakduringthisexam.May,might,can,couldmightmaycouldcouldCanmaynot表示猜测表示许可表示请求表示猜测表示能力表示不允许ks5u精品课件7.They(cannot/maynot)_________________stillbeout,thelightisoninthehouse.8.You(couldn’t/mightnot
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