can特殊用法.ppt

can①possibilityorprobability:②usedforsayingwhatsometimeshappens;③usedforsayingthatsomethingsometimeshappensorissometimespossibleortrue:④usedtoindicatethatsomethingistypicallythecase会(用来表示某物的通常情况)⑤usedtosaywhatsb/sthisoftenlike:⑥,①Antiqueclockscanbeoutofplaceinmodernhomes.②。③Temperaturescanreach40CºFahrenheitinsummer.④Evenminorheadinjuriescanbeserious.⑤Suchthingscananddohappen.⑥Youcangetskindiseasesfrombathingindirtywater.⑦Smokingcancausecancer.⑧Noisecanbequiteannoyingifyou'relivinginaflat.⑨Hecanbereallyannoyingattimes(= Heissometimesveryannoying).⑽Itcanbequitewindythere,[.]usedtoexpressdoubtorsurpriseaboutthepossibilityofsomething'sbeingthecase可能,会(用以表示对某种可能的怀疑或吃惊)①Hecan‘。【doubt】②Wherecanshehavegone?她可能去哪呢?【surprise】③Iwonderifmylonglostneighborcanstillbealive.④Thiscan’tbetherightroad.⑤Itcan’[innegatives]usedtosaythatyoudonotbelievethatsomethingistrue:允芯吨帕饯粱邑杏吁抿娃钮菱塌园鹰帅错记诽蔷靶敏趁聪菱辆暮躁姨幼涟can特殊用法can特殊用法:,特别在春季。镀汝谩雇挞蝗桑圃染讶筒敲骑砸配恰羽京患营蝴浊暴审缚抑廷咙戏罐粹正can特殊用法can特殊用法解:从语境上看,C、D不宜选,在A和B中,许多人想当然地选了A,认为整个句子为现在时态,所以选can,而不选过去式could。但最佳答案却是B而不是A。一般can用于推测表示可能性时,通常只用于否定或疑问句中;但是could用于表推测时,不仅可用于否定和疑问句,也可用于肯定句,且此时could并非can的过去式,与can也没有时间上的差别,只是could比can语气更委婉些。can在以下情况下,可用于肯定句。①抽象的可能性,即从理论上或逻辑上分析是可能的,但实际上未必会发生。如:。②后接“be/get/seem+形容词”,表示“有时会”、“时常会”等。如:。You_________beright,butIdon’tthinkyouare.