高中英语 Unit2语法学案 新人教版必修3.doc

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1、Unit2HealthyeatingModalVerbsPart1自主学习goovertheModalVerbsexercises。用情态动词cancouldmightmaymustmustn’twillwouldshouldoughtto填空。1）_______________Iborrowyourbikeforamoment?2)Ithoughtthestory__________notbetrue.3)HesaidthatI____________usehistelephone.4)He_______________befromC

2、anada.5)You___________smokeinpublicplaces.6)Idon’tlikethisradio.I___________buyanewone.7)Theradioisbroken.I___________buyanewone.8)Where___________Iwaitforyou.9)You___________keepyourpromise.10)I____________tellyouaboutit.11)____________youliketojointhefootballclub?12)Th

3、ere’ssomethingI___________tellyoubeforeyouleave.Part2合作探究Task1情态动词+havedoneMusthavedone想必/准是/一定做了，否定式为:can’t/couldn’t+havedone.eg.Itmusthaveraidedlastlightfortheroadisquitemudy.can/couldhavedone1本来能够做2过去可能会做eg.Canhehavegonetohisaunt'scannot/couldnothavedone1过去不可能2过去没能够eg

4、.Hecannothaveforgottenit.may/mighthavedone也许/或许已经做-----，一般只用于肯定句或否定句（在否定句中表示“可能不”），不用与疑问句。用might表示语气更加不肯定。It’stoolate.Ithinkhemayhavegonetoschool.Hemaynothavefinishedthework.Should/oughttohavedone本该做，而实际上没做eg.Yououghttohavedonethisexercisecarefully.Shouldnot/oughtnottoha

5、vedone本不该做而做了eg.Youshould’thavetoldherthetruth.needn’thavedone本不必做而做了eg.Youneedn’thavetakenataxihere,foritwasveryneartomyhouse.Howdidyoudoonthedrivingtest?notsowell.I________________(couldhavedone/musthavedone)muchbetterbutIwastoonerous.Youhavebrokenyourpromise;you______

6、___________(couldhavefinished/shouldhavefinished)paintingthehouselongago.Ididn’tgofishinglastSundaybecausemywasbrokendown.You_______________（couldhavedone/shouldhavedone）You_______________(shouldhavecometo/needn’thaveinterrupted)themeetingtomethat.Youcouldhavecometomeaft

7、erwards.Task2虚拟语气1）与现在事实相反的假设虚拟条件句主句If+主语+动词的过去式（be主语+should/would/could/might动词用were)+动词原形eg.IfIwereyou,Ishouldseizethechancetogoabroad.2)与过去事实相反的假设If+主语+had+过去分词（虚拟条件句）主语+should/would/could/might+have+过去分词（主句）Eg.Ifyouhadtakenmyadvice,youwouldnothavefailedintheexams.3）与

8、将来时事实相反的的假设1.if+主语+动词的过去式2.if+主语+wereto+动词原形3.if+主语+should+动词原形（虚拟条件句）主语+should/would/could/might/+动词原形