高一英语情态动词课件 新课标 人教.ppt

Grammar非推测性情态动词shallwillmustmustn’tshouldwould的用法shallmustmustn’tusedto和would的区别巩固练习Must+do/bedoing可以对现在、现在进行的情况进行肯定的推测Must+havedone表示对过去已经发生的行为进行推测意为“想必/准是/一定作了某事”。NOTICEcan后跟动词原形表示小、对现在情况的否定和疑问推测can/could+havedone表示对过去的行为的怀疑和不肯定通常用在否定句和疑问句中。may/might后跟动词原形表示对现在情况的推测。may/might+havedone表示对过去已发生行为的推测意为“也许/或许/已经…”。一般只用语肯定句和否定句中不用与疑问句。might比may更委婉、含蓄和不肯定。should/oughtto表示推测意为“理应应该”。巩固练习5.---YoumaylaughbutI’vebeenthinkingofbecomingavegetarian.---Ohyou____beoutofyourmind.Youwillbehungryallthetime.A.willB.mayC.mustD.should6.---Iwonderwhytheyarelate?---They_____thetrain.can’thavemissedB.couldmissC.musthavemissedD.mightmiss7.---Showmeyourpermitplease!---Ohit’snotinmypocket.It______.A.mightfalloutB.couldfalloutC.shouldhavefallenoutD.musthavefallenout7.---HasMikestarted?Hesaidhewouldjoinintheparty.---He____.Heisamanofkeepinghisword.A.couldhaveleftB.musthaveleftC.can’tcomeD.won’tbecoming8.Everythinghastwosides.Beautifulsongssometimes___bejustnoisetoothers.mustB.mayC.shouldD.could9.---Therewerealreadyfivepeopleinthecarbuttheymanagedtotakemeaswell.---It___acomfortablejourney.A.can’tbeB.mustn’thavebeenC.shouldbeD.couldn’thavebeen10.Chinesemusthavethelargestnumberofspeakers____.A.mustn’ttheyB.haven’ttheyC.don’ttheyD.didn’ttheycould(不用can)+havedone在肯定句中表示“本来能够…而没能…”具有婉转的批评和责备之意。should/oughtto+havedone用于肯定句时表示“本该做某事而实际上没做”用于否定句时则表示“不该做的事反而做了”。might（不用may）+havedone表示“本来可能…”但实际上没有发生的事。另外还可表示“本来应该或可以做某事”之意含有轻微的责备语气。needn’t+havedone表示做了本来不必去做的事。巩固练习4.Asitturnedouttobeasmallhousepartywe____soformally.needn’tdressB.didn’thavetodressupC.MightnothavedressedupD.needn’thavedressedup5.I’mrathersurprisedyouh