中考英语 情态动词复习课件.ppt

modalverbs 情态动词 1 jim singverywell 2 hello ispeaktojim 3 helistened buthe hearnothing 4 wearestudents we workhard 5 icomein 6 you talkinclass can can may must could might can could may could must may mustn t theremustbesomemistakes shecan tbeenglish askjim hemayknowtheanswer must can t may must becertain may might could benotcertain bepossible can t beimpossible worksomethingout what sthis itmustbe canitbe whatkindofball itmay mightcouldbe what sthis might may could whocanitbe itmay might couldbe what sinthebox theremay might couldbe chocolate whatdotheydo hemustbea policemanpostmanwaiterboss discussion wherearetheyfrom he shemustbefrom comefrom he shemay mightbefrom comefrom discussion whatcanitbe canitbea no itcan tbea ithinkit yes maybe whataretheygoingtodo he she theymay might could discussion can和could 1表示 能力 icanswim butmysistercan t 2 表示 许可 请求 canigowithyou 请求 fathersaidicouldgotocinema 表示过去的许可 youcannotsmokeinthemeetingroom cannot表示 禁止 couldiuseyourphone yes ofcourseyoucan 肯定回答 不能用could 一般是 yes please thanks 3 猜测 主要用于否定句和疑问句 hecan tbeathome 否定句 canthenewsbetrue 疑问句 may和might 1 表示 许可 youmaytakeawalk studentsmaynotmakenoiseinthelibrary maynot表示不许可或禁止 mayicomein 否定回答no youmustn t cannot 也可以maynot肯定回答sure certainly ofcourse mightitroubleyouforalight youmayindeed 2 表示 事实上的可能性 itmayraintomorrow 表示可能会发生 1 表示 必须 务必 wemustobeyorders mustipaynow 肯定回答yes youmust否定回答no youneedn t或no youdon thaveto 2 表示 预测 必定 必会 一般用于肯定句 可用于否定一般疑问句 theremustbeamistake mustn ttherebeanotherreasonforhisbehavior must mustmay might couldcan t couldn t do bedoinghavedone whataretheydoing must whatismswangdoingnow itmusthaverainedlastnight howdidtomreachthecake hemusthaveusedachair whatisthehousefor discussion w