必修三语法PPT格式课件下载.pptx

1、neednt考点一情态动词（unit1，unit2）三、情态动词的用法及相互区别三、情态动词的用法及相互区别,是考试的内容之一是考试的内容之一1.can,beabletobeableto表示经过努力后,能够做到;beableto有多种形式的变化。can1）.表示体力或脑力方面的能力;2）.表示允许、可能性。could是can的过去式,表示过去有能力及过去存在的可能性;用于疑问句表示委婉地提出问题。考点一情态动词（unit1，unit2）1）Thefirespreadthroughthehotelveryquicklybuteveryone_getout.A.hadtoB.wouldC.coul

2、dD.wasableto答案D2）-Willyoustayforlunch?-Sorry,_.Mybrotheriscomingtoseeme.A.ImustntB.IcantC.IneedntD.Iwont答案D考点一情态动词（unit1，unit2）2.may表示询问或说明一件事可不可做;表示某事有可能发生。might是may的过去式;用在疑问中比may委婉、客气。1）-MayItakethisbookoutofthereading-room?-（Yes,youmay.）No,youmustnt.2）-MightImakeasuggestion?-Yes,youmay.考点一情态动词（un

3、it1，unit2）3.must1）表示必须要做的事:必须2）表示很有把握的推断有把握的推断:一定,准是。have（has）to:have（has）gotto必须,不得不。过去式:hadto3）-MustIgettothestationbeforethreeoclock?-Yes,youmust.（No,youneednt.）考点一情态动词（unit1，unit2）4）Imafraidyouwillhavetowaitawhile.5）Shemustbeintheclassroomnow.6）Mary_beinParis,Isawherintownonlyafewminutesago.A.mu

4、stntB.shouldntC.cantD.maynot答案A考点一情态动词（unit1，unit2）4.shall1）在疑问句中,用于第一、三人称表示说话人征求对方的意见或向对方请求。-ShallIplaceanorderwithyounow?-No,youneednt.-Shallheturndowntheradioabit?-Yes,please.（No,pleasedont.）考点一情态动词（unit1，unit2）2）用于二、三人称,表示说话人给对方的命令、警告、允诺。Youshallreturnthebookbackassoonasyoufinishreadingit.Everyt

5、hingthatheownsshallbetakenawayfromhim.-Yourbrotherseldomcomestoseeyou,_?A.doesheB.doesntheC.willheD.isnthe答案A-Itsafineday.Letsgofishing,_?A.wontweB.willweC.dontweD.shallwe答案D考点一情态动词（unit1，unit2）5.should应该应该;应当应当1）Youshouldlistentothedoctorsadvice.2）Youshouldstudythearticlecarefully.6.will,would1）在疑问

6、句中用于第二人称,表示说话人向对方提出请求或询问。用would语气更加婉转。2）will表示现在的习惯性动作或状态;would表示过去的习惯性动作或状态。3）will用于各种人称,表示意志、意愿、决心、允诺;would表示过去时间的意志、意愿、.。考点一情态动词（unit1，unit2）（1）Dontsmokeinthemeetingroom,_you?A.doyouB.willyouC.canyouD.couldyou-Willyoucomewithme?-Yes,Iwill.（Iamsorry,Icant.）（2）-Wouldyoutellussomethingaboutyourself?

7、-Yes,Iwill.（3）-Itsmybirthdaytomorrow.Dontforgettocometomyparty.-_.A.IdontB.IwontC.IcantD.Ihaven考点一情态动词（unit1，unit2）7.oughtto应该应该;应当应当1）Yououghtnttosmoketoomuch.2）She_whatshehasdone.A.oughttopraiseB.oughtbepraisedC.oughttohavepraisedD.oughttobepraise答案Dpraisefor&bepraisedfor考点一情态动词（unit1，unit2）8.dare

8、1.daretocome2.darecome1）Hedarenottellthetruth.2）Hedoesntdaretocomeoutatnight.3）Idontknowwhetherhe_try.A.dareB.needsC.wantsD.isallowed答案A考点一情态动词（unit1，unit2）9.need1）作为情态动词:必须2）作为实义动词:需要A.主语是人needtodosth./tobedonebysb.1）-Dotheyneedtotakeanybookswiththem?-No,theydontneedto.2）-Needwebuyanynewequipment?-

9、No,weneednt.考点一情态动词（unit1，unit2）B.主语是事物needdoing/tobedone3）Thisfarmtoolneedsrepairing./toberepaired.4）-ShallItellJohnaboutit?-No,you_.Ivetoldhimalready.A.needntB.wouldntC.mustntD.shouldnt答案A5）Itsafineday.You_takearaincoatwithyou.A.cantB.mustntC.needntD.maynot答案C考点一情态动词（unit1，unit2）四、情态动词四、情态动词+不定式的完

10、成式是高考的考试要点不定式的完成式是高考的考试要点1、musthavedone：“一定做过/一定已经”表示对过去情况极大把握地推测，仅用于肯定句2、may/mighthavedone：也许做过某事（推测）；本来可以做某事却没做3、canthavedone为否定句或疑问句，一定没做过某事对过去的推测“不可能”couldhavedone本来可以做某事却没做考点一情态动词（unit1，unit2）4.neednthavedone：不必要做某事，实际做了needntdo：不必做（实际也没做）5.oughtto/shouldhavedone：本来应当做的却没做oughtnt/shouldnthavedo

11、ne本来不应该做某事却做了考点一情态动词（unit1，unit2）6、would/could/might/should+havedone用来表示与过去事实相反的虚拟语气7、wouldratherhavedone表示当时宁愿做了宁愿做了某事否定形式：wouldrathernothavedonee.g.IfIhadbeenfreethatday,Iwouldhavegonewithyou.8、wouldlike/lovetohavedone：本想做某事而实际上未做考点二名词性从句（unit3，4）考点名词性从句名词性从句主语从句主语从句宾语从句宾语从句表语从句表语从句同位语从句同位语从句考点考点1

12、 主语从句主语从句从属连词（不作成分）that,whether 连接代词（作成分）what,who,whom,whose,which,wh+ever 连接副词（作状语）when,where,how,why考点二名词性从句（unit3，4）考点1连接词连接词that，whether引导引导Thatthecollegewilltakeinmorestudentsthisyearistrue今年这所大学将招收更多新生是真的。Whetherhecanfinishhistaskontimeisofgreatimportance他是否能按时完成任务非常重要。特别提示特别提示（1）if不能引导主语从句。（2

13、）形式主语it替代主语从句。考点二名词性从句（unit3，4）考点（2）形式主语it替代主语从句。常见的it替代主语从句的句式主要有以下几种：AIt+系动词+形容词+that从句。如：Itisquiteclearthatthewholeprojectisdoomedtofailure注:在句型“Itisimportant（necessary,strange,natural）that.”中，that后面从句中谓语动词用should+动词原形Itsnecessarythatweshouldhaveawalknow.考点二名词性从句（unit3，4）考点（2）形式主语it替代主语从句。BIt+系动词

14、+名词+that从句。Itisourhopethatthetwosideswillworktowardspeace我们的希望是双方能朝着和平的方向发展。注:在Itisdemanded/suggested/ordered/required.that-clause句型中从句用（should）+动词原型Itisdemandedthatweshouldworkoutaplan.考点二名词性从句（unit3，4）考点（2）形式主语it替代主语从句。CIt+be+ved形式+that从句。Itisannouncedthattheplanhasbeensuccessfullycarriedout据宣布计划已

15、经顺利实施。在Itisapity/ashame/nowonderthat.句型中从句也常用（should）+动词原型Itsapitythatyou（should）missagoodchance.考点二名词性从句（unit3，4）考点2连接代词引导连接代词引导Whatwecantgetseemsbetterthanwhatwealreadyhave我们得不到的东西似乎比我们拥有的东西好。whotheletterwasfromisstillunknown这封信是谁寄出的还不清楚。Whicheverofyougetsherefirstwillgettheprize你们当中第一个到达这里的人将获得奖项。考点二名词性从句（unit3，4）考点3连接副词引导Howacupuncturereducesandrelievespainisunclear针灸是如何减轻和解除疼痛的还不清楚。whydinosaurssuddenlydisappearedstillremainsamystery恐龙为什么突然消失了还是个谜。考点二名词性从句（unit3，4）考点考点2 宾语从句从属连词（不作成分）that,whether,if 连接代词（作成分）what,who,whom,whose,which,wh+ever