高一英语暑假专题——情态动词译林版 知识精讲.rar

用心爱心专心高一英语暑假专题——情态动词译林版【本讲教育信息】一.教学内容：暑假专题——情态动词二.教学目标：掌握情态动词三.教学重难点：情态动词（一）表示能力时只能用can（现在）：coulddo…过去能做……was/wereabletodo…过去能做；过去设法成功完成某一具体动作=managetodo=succeedindoingeg.Wecanandmustconquerthesedifficulties.eg.Whocanproveit?eg.Hecouldrunandwasagoodtennisplayer.eg.IwasabletoswimacrosstheriverwhenIwasonlytenyearsold.eg.Becausehewasyoung,hecouldn’t/wasnotabletoswimacrosstheriver.（二）表推测时：may/might[语气最不肯定，多用于（肯，否）定句]可能eg.can[语气肯定，多用于疑问、否定和感叹句]可能eg.Youcan’teatyourbreadandhaveit.eg.—LiPing,someoneiswaitingforyouattheschoolgate.Whocanitbe?—Itmaybetheheadmaster.—Itcan’tbehim.HehasgonetoBeijing.—ItmustbeMr.Li.Helooksliketheheadmaster.could[较can不确定，也可用于肯定句]可能must[语气最肯定，只用肯定]一定should[表可能性，推论，推测，期待等]按理该，估计oughtto[表示可能性，揣测，猜测，期望等]照说应该，理应eg.Ifhestartedatsix,heoughttobeherenow.may/mighthave+ed（语气不肯定）过去可能……eg.—Ididn’tseeTomatthemeetinglastnight.—Shemighthavebeenill,Iguess.can’t/couldn’thave+ed（语气肯定）过去不可能……musthave+ed（语气肯定）过去一定eg.Thegroundisdry.Itcan’t/couldn’thaverainedlastnight.eg.Thegroundiswet.Itmusthaverainedlastnight.shouldhave+ed（据实推论）按理应该……eg.MyclassmatesshouldhavearrivedinShanghaibythistime.oughttohave+ed（据实推论）过去按理该……eg.Iftheyhadstartedat6o’clock,theyoughttohavegottherebynow.（三）表责备时：may/mighthave+ed（语气委婉）过去本可能…eg.Shemighthavegivenyoumorehelp,eventhoughshewasverybusy.can/couldhave+ed（语气委婉）过去本能…eg.Wecouldhaveattendedthemeeting,butwehadalotoftrafficonourway.shouldhave+ed（语气强烈）过去本该…，而未…eg.Thetreeisdead.MaybeIshouldhavegivenmorewater.oughttohave+ed（语气强烈）过去本应该…，而未…eg.Mysisterfailedinmathsagain.Ioughttohavegivenhermorehelp.needn’thave+ed（无责备之意）过去本不必…，却做了…eg.Weneedn’thavewaitedforhim.Awholenightwaswasted.（四）表未曾实现：was/weretohave+ed过去本打算/本想……eg.Myteacherwastohavecomeherelastnight,buthehadanimportantmeetingtoattend.eg.Theplanewastohavetakenoffatseven,butsomethingwentwrong.shouldlike/lovetohave+ed过去本想…而没…＝wouldlike/lovetohave+ed…＝shouldhaveliked/lovedtodo…＝wouldhaveliked/lovedtodo…eg.IwouldliketohavegonetovisitmyEnglishteacher,butIhadnotime.eg.IwouldlovetohavegonetoBeijingthatday,butth