Module5TheFirstAmericansPartOne:Teachingdesign第一部分:教学设计Period2:GrammarandusageStep1:Generalintroduction1.RevisionofthemodelverbWe’vestudiedthemodelverbinthepast.Let’shavearevisionaboutitinbrief.ThecorrectuseoftheModelVerbisthemostimportantpoint.Nowwehaveaconclusion.1)表示能力,意为“能,会”。Can可用于肯定句、疑问句或否定句,could是can的过去式形式或can的委婉说法。例如:考例1Ishouldhavebeenthere,butI______notfindthetime.AwouldBcouldCmightDshould考例2Thefirespreadthroughthehotelveryquicklybuteveryone_______getoutAhadtoBwouldCcouldDwasableto2)表示可能性,意为“可能会,也许会”。此时可用can(用于否定句),could,may,might(表示的可能性比may小)。例如:考例3Excuseme.IsthistherightwaytotheSummerPlace?Sorry,Iamnotsure.Butit_________be.AmightBwillCmustDcan考例4Youmightjustaswelltellthemanufacturerthatmalecustomers_______notlikethedesignofthefurniture.AmustBshallCmayDneed(Keys:BDAC)3)表示请求、允许,意为“可以”。can/could(第二人称的肯定句、疑问句中,主要用于口语,could表示的语气更委婉);may主要用于正式场合,第一人称的一般疑问句,表示征求对方许可;will主要用于第二人称的一般疑问句,would更委婉,其常见否定句回答:Sorry,Ican’t例如1.Ihearyou’vegotasetofvaluableAustraliaancoins.________Ihavealook?用心爱心专心116号编辑A.DoB.MayC.ShallD.Should2.Willyoustayforlunch?Sorry,_______.Mybrotheriscomingtoseeme.A.Imustn’tBIcan’tC.Ineedn’tDIwont(Keys:BB)4)表示征求对方意见,意为“我们可以干某事吗?”。Shall主要用于第一人称的一般疑问句中。例如:—Theroomissodirty._______wecleanit?—Ofcourse..A.willB.ShallC.WouldD.Do(Key:B)5)表示意志、意愿、决心,will用于各人称,would表示过去的意愿。例如:He’lltakeyouhome—youonlyhavetoask.—Shewouldn’tcometothezoo—shewasfrightenedoftheanimals.6)表示义务意为“应该”。此时用should或oughtto。Should表示从说话人的个人看法这一角度;oughtto表示道义上的责任,是从义务或按推理的角度。例如:1.Ioftenseelightsinthatemptyhouse.DoyouthinkI________reportittothepolice?AshouldBmayCwillDcan2.Sir,you_________besittinginthiswaitingroom.ItisforwomenandchildrenonlyAoughtn'ttoBcan’tCwon’tDneedn’t(Key:AA)7).表示必要性,need主要用于疑问句或否定句中,needn’t不必要;must意为“必须,一定”,mustn’t表示禁止,意为“不准”。例如1.Childrenunder12yearsofageinthatcountry_______beunderadultsupervisionwheninapubliclibrary.A.mustB.mayC.canD.need2.Idon’tmindtellingyouwhatIknow.You______I’mnotaskingyouforitA.mustn’tB.maynotC.can’tD.needn’t(Key:AD)8)表示习惯性、经常性、倾向性。常用will,would.例如:Whenhewasthere,he______gotothatcoffeeshopatthecornerafterworkeveryday.A.wouldB.shouldC.hadbetterD.might(Key:A)2.Summaryabouttheusageofwhen,whileandasWhen“当…时”;(asthetimethat)可表示瞬间,时间段,与主从句所述动作、事情可同时,也可有先后:Itwassnowingwhenwegottotheairport.我们到达机场时,天正下着雪。(同时发生)用心爱心专心116号编辑Hewenthomewhenhehadfinishedhishomework做完作业后他回家去了。(先后发生)While“正当(正在)…时”;(指同时=1foraslongas2duringthetimethat),用于同时进行的两延续性动词相伴随而发生,常对同类的两动词进行比较:PleasewritewhileIread(=duringthetimethat)我念的时候,请写下来。IamsafewhileIamhere(=foraslongas)只要我在这儿,我就安全。Somestudentswerereadingwhileotherswerewriting.有些学生在读,而有些学生在写。(进行对比)As“当…时”;强调atthesametime.1)不指先后,而指并相发生,尤指短暂动作或事件同时发生:AsIlooked,someonecamenear.正当我看的时候...