英语人教版九年级全册9英语U8A3.ppt

Unit8ItmustbelongtoCarla.,SectionAPeriodThree,laboratoryoutdoorscoatsleepy,n.实验室adv.在户外；在野外n.外套；上衣adj.困倦的；瞌睡的,Objectives,Tolearntousemust,might,couldandcantformakinginferencesItmustbeCarlas.ItcouldbeMeishairband.Imnotsure,butitcantbeadog.,动词的种类,按词义和句中的作用，动词可以分为四类。实义动词（及物动词和不及物动词）系动词助动词情态动词,Thatman_bemyEnglishteacher.HehasgonetoCanada.(2011湖南株洲)A.needntB.mustntC.cant【考点点拨】考查情态动词辨析。neednt意为“不必”；mustnt表示“明令禁止”；cant表示“不可能”。根据句意“那个男人不可能是我的英语老师。他去了加拿大。”故选C。,考点例析,情态动词,情态动词具有一定的意义，但不能单独作谓语，其后需接动词原形一起构成句子的谓语。情态动词(除haveto以外)没有人称和数的变化。另外，情态动词可用来构成否定句、疑问句并进行简略回答。初中常见的情态动词有：can,may,must,need,haveto,could,should,oughtto等。,考点一：考查表示“能力”的情态动词,1._yourAustralianfriendeatwithchopsticks?Yes,butshecantusethemwell.A.ShouldB.NeedC.CanD.Must2.Theworkistoohardforus.We_finishitontime.A.cantB.mustntC.shouldntD.neednt,情态动词考点,3.Couldyourfatherplaygolfwhenhewasyoung?No,he_.Buthe_playtabletennis.A.couldnt;couldB.neednt;mightC.mustnt;shouldD.shouldnt;need,【考点点拨】情态动词can表示“能力”时，与beableto同义，其否定形式为cant。can表示现在的能力，其过去式could表示过去的能力。,考点二：考查表示“应该”的情态动词,1._wetofinishourhomeworkbeforenoon?Yes,you_.A.Need;canB.Have;doC.Ought;oughttoD.Should;must2.You_studyhardifyouwanttobeascientistinthefuture.A.mayB.shouldC.wouldD.could,【考点点拨】情态动词should和oughtto都可表示“应该”，但should侧重说话者主观的看法，而oughtto更侧重客观情况。should的否定形式为shouldnt，oughtto的否定形式为oughtntto或oughtnotto。,考点三：考查表示“请求；许可”的情态动词及其回答,1._Iborrowyourmathsbook?Sure.Hereyouare.A.NeedB.WillC.MayD.Must,2._Itakesomephotosinthehall?No,you_.Lookatthesign“Nophotos”!A.Can;needntB.Must;mustntC.Should;needntD.May;mustnt3.CouldIuseyourdictionaryforawhile?Yes,ofcourseyou_.A.couldB.canC.willD.should,【考点点拨】情态动词may和can都可表示“请求；许可”。may比can正式，could在表示“请求；许可”时，既可表示过去，也可表示语气的委婉。当“May/Can/CouldI”表示“请求；许可”时，肯定回答常用“Yes,please.”/“Certainly.”等，否定回答常用“No,youcant/mustnt.”等。,考点四：考查表示“推测”的情态动词,1.IsawLilyinthesupermarketthismorning.Oh,it_her.ShemovedtoAustraliathedaybeforeyesterday.A.canbeB.mustbeC.cantbeD.mustntbe,2.Afteralongwalk,thechildren_beverytirednow.A.willB.mustC.havetoD.can3.John_gowithustomorrow,butheisntsure.A.mustB.canC.needD.may,【考点点拨】may,can,must都可表“推测”，三者的可能性依次递增。may和must表“推测”常用于肯定句中，can表“推测”常用于否定句和疑问句中。,考点五：考查need,must和haveto的用法,1.Jim,you_playwiththeknife.You_hurtyourself.A.wont;cantB.mustnt;mayC.shouldnt;mustD.cant;shouldnt2._Ihavetohandinmyhomeworknow,MrZhang?Yes,youdo.A.DoB.CanC.MayD.Must,3.MustIgetupbeforesixoclocktomorrowmorning,Dad?No,you_.TomorrowisSaturday.Youmaygetupalittlelater.A.mustntB.cantC.needntD.maynot4.Itstoolate.We_gohome,orwellbeblamed(责备).A.canB.mayC.mightD.haveto,【考点点拨】need作情态动词，意为“需要”，后接动词原形，常用于否定句、疑问句和条件句中。must意为“必须”，强调主观看法。对must引导的一般疑问句，肯定回答常用“must”，否定回答常用neednt或donthaveto。mustnt意为“一定不要；禁止”。haveto意为“不得不；必须”，强调客观情况下需要做某事，有人称、数和时态的变化，变否定句和疑问句时需要借助助动词完成句型的变化。,Finishtheexercises4a-4conpage20.,Findtheanswertothequestion.,Individualactivity,注:另附word文档。点击此处链接,1.Theroomisbigenough.It_hold100people.(2011广西南宁)A.canB.mustbeC.needD.haveto2.Mr.Wang,canIfinishmyhomeworktomorrow?Sorry,you_.(2011重庆)A.cantB.dontC.needntD.wont,I.中考链接。,3.WhoseT-shirtisthis?It_beJohns.Itsmuchtoosmallforhim.(2011湖北荆州)A.mayB.mustC.cantD.shouldnt4.Thetalentedboy_writelyricswhenhewasattheageoften.(2011山西)A.mayB.couldC.must,5.Bob,shallwegoandmeetournewclassmate?Sorry.Imbusynow.Butyou_askDavidtogowithyou.Heisfree.(2011浙江丽水)A.needB.mayC.wouldD.must6._Iborrowyourhistorybook?Sure.Hereyouare.(2011江苏淮安)A.MustB.MayC.NeedD.Will,7.Cars,busesandbikes_stopwhenthetrafficlightschangetored.(2011上海)A.canB.mayC.mustD.need8.Themagazine_beLilys,forwecanfindhernameonthecover.(2011山东青岛)A.mayB.mightC.couldD.must,9.MustIgetupearlytomorrowmorning?No,_.(2011山东滨州)A.youmustntB.Idontthinkyouha