教学ppt课件现在完成时

我们将学习现在完成时的用法我们将学习现在完成时的用法:1 表示过去发生或完成的某一动作对现在造成的表示过去发生或完成的某一动作对现在造成的影响或结果。影响或结果。Have you read that story?你读过那个故事吗？你读过那个故事吗？（读这一动作发生在过去，对现在造成的影响为：（读这一动作发生在过去，对现在造成的影响为：是否知道故事中的内容）是否知道故事中的内容）I have bought two apples.我买了两个苹果。我买了两个苹果。（买这一动作发生在过去对现在造成的结果是：拥有两个（买这一动作发生在过去对现在造成的结果是：拥有两个 苹果）苹果）在学习这一概念的同时，还应注意常与现在完成时态连在学习这一概念的同时，还应注意常与现在完成时态连 用的几个副词：用的几个副词：already，just多用于肯定句中，多用于肯定句中，yet，ever，never多用于疑问句和否定句中。如：多用于疑问句和否定句中。如：I have already finished my homework.我已经做完家庭作业。我已经做完家庭作业。1.He has just had supper.他刚吃过晚饭。他刚吃过晚饭。2.Have you ever sung this English song?你曾唱过这首英文歌吗？你曾唱过这首英文歌吗？3.They havent done the homework yet.他们还没有做作业。他们还没有做作业。4.We have never seen a film.我们从来没有看过电影。我们从来没有看过电影。5.He has died.他死了。他死了。2.表示过去开始的动作持续到现在，甚至还可能继续下去；表示过去开始的动作持续到现在，甚至还可能继续下去；常和表示从过去某一时刻延续到现在（包括常和表示从过去某一时刻延续到现在（包括“现在现在”在内）在内）的一段时间状语连用。如：的一段时间状语连用。如：They have lived here for ten years.他们住在这儿有十年了。他们住在这儿有十年了。She has taught in this school since three years ago.她从三年前开始就在这个学校教书。她从三年前开始就在这个学校教书。We have known each other since we were very young.我们从很小的时候就彼此认识。我们从很小的时候就彼此认识。注意：用于这种用法中的动词必须是表示连续的动作或状态的词，注意：用于这种用法中的动词必须是表示连续的动作或状态的词，如：如：live、work、teach、study、stay、wait、know、be、have、learn、wear、walk、sleep等，等，这类动词叫做这类动词叫做“延续性动词延续性动词”。英语中还有另一种动词，如：英语中还有另一种动词，如：buy、join、become、begin、fall、come、go、hear、die、close、open、leave、borrow、等，等，它们只表示短暂的动作，不能表示一个延续的状态，这类动词它们只表示短暂的动作，不能表示一个延续的状态，这类动词叫做叫做“瞬间性动词瞬间性动词”，它们，它们可以用于现在完成时，可以用于现在完成时，但是不能和表示一段时间的状语连用。但是不能和表示一段时间的状语连用。短暂性动词变延续性动词：短暂性动词变延续性动词：1)join-2)come-2)3)borrow-4)buy-5)arrive-6)leave-7)begin-8)open-9)close-10)die-11)get up -12)come back-13)end-14)catch a cold-15)become interested in-be in/abe in/atkeep have bebe away (from)be onbe openbe closedbe deadbe upbe backbe overhave a coldbe interested in1.The shop has been _ for an hour.A.close B.closing C.closed2.How long have you _ the book?A.borrowed B.kept C.bought3.They _ Guangzhou for an hour.A.left B.have left C.have been away from4.I have _ Foshan since ten years ago.A.come to B.arrive in B.been in5.I bought a computer _.A.for two days B.since two days ago C.two days ago 6.Class has been over _.A.just now B.for a moment C.a moment ago7.I have come back _.A.for an hour B.yet C.already CBCBCBC1.这只狗死了。这只狗死了。2.这只狗昨天死了。这只狗昨天死了。3.这只狗一天前死了。这只狗一天前死了。4.这只狗死了一天。这只狗死了一天。The dog has died.The dog died yesterday.The dog died a day ago.The dog has been dead for a day._1.他们离开和顺了。他们离开和顺了。2.他们两天前离开和顺了。他们两天前离开和顺了。3.他们自从两天前就离开和顺了。他们自从两天前就离开和顺了。/他们离开和顺两天了。他们离开和顺两天了。They left Heshun.They have left Heshun.They left Heshun two days ago._They have been away from Heshun since two days ago._They have been away from Heshun for two days._1.戏剧开始了。戏剧开始了。2.戏剧半小时前开始了。戏剧半小时前开始了。3.戏剧开始半个小时了。戏剧开始半个小时了。4.我买了一台电脑。我买了一台电脑。5.自从我来到这里就买了一台电脑。自从我来到这里就买了一台电脑。The play has begun.The play began half an hour ago.The play has been on for half an hour.I have bought a computer.I have had a computer since I came here.1.I _ the way.I _ here for quite many years.A.knewhave lived B.knewlive C.knowhave lived D.knowlive2._ you ever _ America?Yes,I have.A.Havegone to B.Havegone in C.Havebeen to D.Have been in3.My brother _college for over three years.A.has gone to B.has been to C.has been at4.He _ the Army by the end of 1989.He _ in the army since then.A.joinedis B.has joinedhas been C.had joinedis D.had joined has been5._ you _ the text yet?Yes,we _ it two hours ago.A.Didcopydid B.Havecopiedhave C.Havecopieddid D.Did copyhadCCCDC5.“Why _ she _ angry?”“Because he _ at her just now.”A.didgetshouted B.hasgotshouted C.didgethas shouted 6._you _ the film before?Where _ you _ it?A.Have seendidsee B.Did seehaveseen C.Haveseenhaveseen7.You _ me waiting for two hours.I _ for you since five.A.keptwaited B.have keptwaited C.kepthave waited D.have kepthave waited8.Where _ John _?To the library.He _ there for an hour.A.hasbeenhas gone B.hasgonehas been C.didgowent D.didbewentAA DB A.用用 already 或或 yet1)Have they taken down the old pictures _?No,not _.2)Most of us have finished our compositions _.3)He hasnt visited the museum_.B.用用 since或或 for1)We have learned five lessons _ the beginning of this term.2)Mrs Liao has been in hospital _ last week.3)I have stayed at my aunts _ two weeks.4)I have been here _ 1999.5)They have kept the books _ one day.6)It has been cold _ two weeks ago.7)We have learnt a lot _ we came here.yetyetalreadyyetsincesinceforsinceforsincesinceC.用用have gone或或 have been1)Where are the boy students?They _ to the school factory.2)Is your father in?No,he _ to Shenzhen._he ever _ there before?Yes,he _ there several times 3)He asked me if I _ to Hangzhou before.I told him that I wanted to go there for a visit as I _ never _ to that city before.4)My brother _the Great Wall three times.have gonehas gone toHas beenhas beenhave beenhave beenhas been to1)I _ a bike.I _ the bike a week ago.I _ the bike for a week.(买了买了)2)He _.He _ for two days.(死了死了)3)She _.She _ for a day.(回来了回来了)4)The factory _.It _ for a year.(开办了开办了)have boughtboughthave hadhas diedhas been deadhas come backhas been backhas openedhas been open1)She has