八年级英语下册 Unit 3 Online tours Grammar 1课件 （新版）牛津版.ppt

Unit3Onlinetour,【Grammar1】,Learningaims,1.了解一般过去时和现在完成时的区别。2.能识别一般过去时和现在完成时的标志词并正确应用它们。,GuideOne,1.Readandunderstandthesentences.(7(1).DanielwenttoBeijingtwoyearsago.(2).Danielboughtanewcomputerlastmonth.(3).MrWuvisitedCanadain2010and2011.(4).DanielhaslivedinBeijingfortwoyears.(5).Danielhasboughtanewcomputer.(6).Mr.WuhasbeentoCanadatwice.,一般过去时表示过去某个时间发生的事情或存在的状态，侧重于过去，与现在无联系。,现在完成时即可表示过去发生的动作对现在所造成的结果或影响，也可表示动作从过去某时间开始，一直持续到现在，并且还有可能持续下去。现在完成时还可以用来说明一个动作在过去的一段时间内发生的频度。因此它强调造成的结果对现在产生的影响。,GuideOne,Readthefollowingsentencesandunderstand“现在完成时”again(1).IhavelivedheresinceIwasborn.(2).DanielhaslivedinBeijingfortwoyears.现在完成时可用来表示从过去某一时间开始的动作一直持续到现在。(3).HobohaseatenupEddiesfood.(4).WehavebeentoBeijing.(5).Danielhasboughtanewbike.现在完成时可用来强调过去发生的事情的结果。(6).MyfatherhasbeentoBeijingtwice.(7).Ihavereadthebookmanytimes.现在完成时可以用来说明一个动作在过去的一段时间内发生的频度。,Thinking?,在做题中如何识别一般过去时和现在完成时？(5一般过去时通常与表示过去的时间连用。如：yesterday、last、ago、justnow、in2008、theotherday、atthattime、thismorning现在完成时则通常和频度副词（ever/recently/just/yet/never/already)或表示一段时间状语连用since/forsofar、thesedays、thisyear、overtheyears或频度（次数）manytimes、twice,Practice,1.完成课本P41PartAB(5Keys:A:1.visited2.climbed3.Have;tried4.havelearntB:1.havejustfinished/finished2.wrote/hasalreadywritten3.was/haventbeen4.havelived/lived,Practice,2.选择填空(5(1).A:IveseenthefilmTheSoundofMusicalready.B:When_you_it?A:Thedaybeforeyesterday.A:have;seenB:will;seeC.did;seeD.did;seen(2)MrBlack_inChinasincefiveyearsago.A:livedB:haslivedC.livesD.isgoingtolive(3).We_treeslastSunday.Sofarwe_over300treesthere.A.planted;plantedB.planted;haveplantedC.haveplanted;plantedD.haveplanted;haveplanted(4).-_totheUnitedStates?-Notyet.ButIwenttoCanadaafewyearsago.A.HaveyoubeenB.HaveyougoneC.DidyougoD.Willyougo(5).IwillnotgotoseethefilmtonightbecauseI_myticket.A.didntloseB.havelostC.willloseD.didnthave,C,B,B,A,B,Practice,3.完成课本42页partD(7MillieiswritingabouttheUSAinherdiary.Completeherdiaryentrywiththecorrectformsoftheverbsinthebox.,Keys:(1)showed(2)have;seen(3)bought(4)haveread(5).has;returned(6).have;been,Haveyoueverdreamtoftravellingaroundtheworldwithoutapassport?Yes,youcanrealizeyourdreambytakinganonlinetour.,梦想周游世界,护照,实现你的梦想,dream,n.梦，梦想,v.做梦；梦想dreamof/about,Practiceinclass（10,完成课课练28页一、二、,Practice,4.完成课本42页PartC(5MilliehasneverbeentoNanjing.SheisaskingSimonaboutthecity.Completetheirconversationwiththecorrectformsofthewordsinbrackets.,Millie:(1)_(you/be/ever)toNanjing?Simon:Yes.I(2)_(be)therethreetimes.Millie:When(3)_(you/go)therelast?Simon:Lastsummer.I(4)_(spend)aweekthere.Millie:(5)._(you/like)it?Simon:Ohyes.I(6)_(have)agreattimethere.I(7)_(visit)manyplacesofinterestand(8)_(ea