微课（情态动词can）(精品).ppt

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1、Modal verbsModal verbscan and cannot We use can and cannot(cant)to say we are able or unable to do something.用法用法 be able to 能，能力能，能力 e.g.我可以唱一首英语歌曲。我可以唱一首英语歌曲。I can/am able to sing an English song.过去式：过去式：could e.g.我十年前就能做到那样。我十年前就能做到那样。I could do that 10 years ago.否定式：否定式：cannot=cant 情态动词情态动词can+V

2、.原原结构结构肯定肯定Sb+can+V.原原+其它其它.eg:Peter can speak English.否定否定Sb+cannot/cant+V.原原+其它其它.eg:Peter cant/cannot speak English.一般疑问句一般疑问句Can+Sb+V.原原+其它其它+?eg:Can Peter speak English?特殊疑问句特殊疑问句特殊疑问词特殊疑问词+can+Sb+V.原原+?eg:What can Peter speak?()1.-_ you help me with this Maths problem?-I _ not work it out.A.Ca

3、n;mayB.Must;must C.Can;can D.May;may()2.The boy _ run very fast.He wants to be a top runner as Liu Xiang in the future.A.can B.cant C.may D.may not3.Excuse me,_ you tell me the way to the nearest park?4.You _ go with us to the zoo if you want to.5.I _ speak Chinese very well,but I _ speak French at all.Exercise