情态动词PPT重点讲解教学,情态动词ppt

情态动词1.can(表现在，一般能力)2.could（表过去）3.beableto（特定场合，努力获得）1.表示能力P355,12,192.表请求（可以吗）can-could(更委婉)may-might(更委婉)强调我能……吗？P3732,443.表示推测、可能性can（用于否定，疑问）0%（强调can’t不可能）P359,18,22,39，P371might，may（用于肯定句）也许，可能P3511,21,30,33,37must（用于肯定句，一定）100%4.表命令禁止must命令（必须）P357,13,15,25,31,43,48mustn’t禁止P341,8,23,26,34must主观，义务和需要haveto客观，不得不、被迫5.情实共存need需要1．Need作情态动词无人称或数的变化，后接动词原形，多用于否定句和疑问句中。如：Youneedn‘tworry.你不必担心否定：needn’t2.Need做行为动词needsthneedtodosthneeddoing=needtobedone表被动•否定：don’tneedp3740,37.特殊回答(多考否定回答)P3510,20,36,45P3516P356,38P343,P3627（2017）Whenyouaretravelling,bringamapbecauseit_helpyou.A.can’tB.mustn'tC.usedtoD.may（2018）---MustIcomebefore6:30tomorrow?---No.You_Therewillbeplentyoftime.A.mustn’tB.can’tC.couldn'tD.needn’t(2019)Youwalkonthewethillpathbecauseyoufallandhurtyourself.A.must;mightnotB.mustn’t;mightC.needn’t;needD.must;must(2020)I_____belate,sodon'twaitformetostartthemeeting.A.mustn'tB.needn'tC.needD.may(2021)Peopletalkonamobilephonewhiletheyaredriving.A.shouldn'tB.needn'tC.mustD.can