八年级英语下册 现在完成时 人教新目标.pptx

《八年级英语下册 现在完成时 人教新目标.pptx》由会员分享，可在线阅读，更多相关《八年级英语下册 现在完成时 人教新目标.pptx（25页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、一、什么叫现在完成时 1.I have just lent my book to John.(I dont have the book now.)现在完成时表示动作发生在过去，但和现在情况有关，既用一个发生在过去的动作来说明现在的情况。2.My uncle has lived in that street since he came to this city.(He began to live there many years ago,he lives there now and he will go on living there.)第1页/共25页二、现在完成时的构成 1.Jack has

2、 gone to the cinema.2.They have finished their homework.助动词 have/has过去分词Jack hasnt gone to the cinema.Has Jack gone to the cinema?Yes,he has./No,he hasnt.Have they finished their homework?Yes,they have./No,they havent.They havent finished their homework.第2页/共25页现在完成时用法（一）过去的(结束性)动作产生的影响或结果现在还存在。1.常用

3、常用短暂性动词短暂性动词做谓语动词做谓语动词.如如arrive,get,finish,borrow,open,stop,begin,go,come,die,fall,2.时间状语常用时间状语常用already,just,yet,ever,before,once(一次一次),recently 等等 不具体不具体的过去时间的过去时间 或或不带有不带有时间状语时间状语第3页/共25页三、现在完成时的用法1.表示过去发生或已经完成的某一动作对 现在造成的影响或结果。-Have you had your lunch yet?-Yes,I have.I have just had it.(现在不饿了。)I

4、 have already posted the photos.(照片已不再我这里了)Mary with his family has never been to China before.-Have they ever heard of the story?-No,not yet.第4页/共25页Adverbs of time before,by now(so far),到目前为止 once,twice,just,recently yet(否否/疑疑),already(肯肯),ever,never,曾经，从不 第5页/共25页Exercises:一、按要求变化下列各句。1.She has l

5、istened to a piece of foreign music.（否定句）2.I have got something important to do.（一般疑问句）3.Have you ever traveled on a train?（否定回答）She hasnt listened to a piece of foreign music.Have you got anything important to do.He has already finished a story book.第6页/共25页4.He finished reading a story-book.（改成现在完

6、成时）5.Li Lei has eaten some dumplings for his breakfast.（对划线问）6.Ive worked out the maths problem.（对划线部分提问）Who has worked out the maths problem?What has Li lei eaten for his breakfast?No,I havent.第7页/共25页 二、用所给动词的适当形式填空。1.-Are you sure you _(lose)the book?-Yes.I _(look)for it everywhere.But I still_(c

7、an not)find it.2.-_ you _(take)the medicine yet?-Yes,I _(take)it half an hour ago.3.I _(never,meet)her sister before.4.He _(just,watch)a football game.He is so tired and hungry now.5.-How many times _ you _(read)this book?-I _(read)it several times.have losthave lookedcantHavetakentookhave never met

8、has just watchedhavereadhave read第8页/共25页6.My brother _(buy)a car last month.7.-Where is Joan?-She _(go)to the cinema.8.You can turn off the radio now.I _(hear)the news already.I _(hear)it at 8 oclock.9.Jack _(not find)his watch yet.10.-_ Wei Fang _(come)yet?-Yes,she _ (come)already.-When _ she _(co

9、me)?-She _ (come)just now.boughthas gonehave heardheardhasnt foundHas comehas comedid comecame第9页/共25页第10页/共25页第11页/共25页1.都表示过去发生的事2.现在完成时强调过去和现在的联系，不能和具体的时间状语连用；3.一般过去时强调过去发生的事或状态与表示过去的具体时间连用（last,ago,yesterday,etc.）presentpastI have lived here for two yearsI have lived here for two yearsI lived th

10、ere 2 years agoI lived there 2 years ago第12页/共25页eg.1.He had his breakfast at 6:00 He has had his breakfast.2.When did you come here?I watched the football match on TV at 9:00.第13页/共25页Exercises1.I _(have)lunch already.2.Has the train_(arrive),yet?3.Tome _ never_(be to)China.4.The twin _just _(see)m

11、y father.5.The twins _(see)my father just now.6.Many tall buildings _(build)in the past 5 years.have hadarrivedhasbeen tohasseensawhave been built第14页/共25页用法二用法二：for+段时间段时间 since+点时间点时间 since+句子（过去时）句子（过去时）E.g.Kate has lived here for 3 years.Kate has lived here since 3 years ago.Kate has lived here

12、since she came to China.表示过去某个时间开始的动作表示过去某个时间开始的动作或存在的状态，一直持续到现或存在的状态，一直持续到现在并可能还将持续下去。动词在并可能还将持续下去。动词使用延续性动词。常与使用延续性动词。常与forfor或或sincesince引导的时间连用引导的时间连用第15页/共25页常见非延续性动词和延续性动词的转变常见非延续性动词和延续性动词的转变arrive/come/go to die become a borrowLeave/move buy openjoin start/begin finish/endcatch a cold get up

13、get to know get out close wake upgo to sleepbecome interested in be in be deadhavekeepbe away/be out be abe in/a member ofbe openbe onbe overhave a coldbe upknowbe outbe closedbe awakebe asleep/sleepbe interested in第16页/共25页Exercises His father has died.(for 2 years)The football match has begun.(sin

14、ce9:00a.m)The twins have joined the army.(since they are 18years old)My teacher has just left Nanjing.(for 3 days)His father has been dead for 2 years.The football match has been on since 9:00 a.m.The twins have been soldiers/been in the army since they are 18years old.My teacher has been away from

15、Nanjing for 3 days第17页/共25页重点句型:It is/has been+段时间+since从句 段时间+has passed+since从句eg.他死了两年了：He died two years ago.He has been dead for two years/since two years ago It is/has been two years since he died.Two years has passed since he died.第18页/共25页1.这本书我借了一个月了。I borrowed this book a month ago.It is/h

16、as been a month since I borrowed the book.I have kept the book for a month./since a month ago.A month has passed since I borrowed the book.第19页/共25页Have/has gone tohave/has been to have/has been inhave/has gone to:已经去了或在途中，还没有返回；have/has been to:曾今去过某地，现在已经回来了,后面可接表示“次数”的状语;have/has been in:表示某人“已在某

17、地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。第20页/共25页Exercises Exercises Tom 在哪儿？他去书店买书了。我在北京待了5年了。Jack 去过上海两次了-Where is Tom?-He has gone to the bookshop to buy some books.I have been in Beijing for 5 years.Jack has been to Shanghai twice.第21页/共25页Correcting 1.I have borrowed the book for 3 months.2.My bother has

18、joined the army since he was 18.3.Jack and Tom have lived here since 5years.4.The film has been on since I have come to the cinema.5.When has Mr.Li caught a bad cold?have kepthas been in/been a member of the armysince 5 years ago/for 5 yearscame didcatch第22页/共25页6.Ten years have passed since they go

19、t married.7.Jim has gone to Beijing for 2 years.8.What time have the factory opened?9.I have gone to Chunhua Middle School twicehashas been indidopenbeen to第23页/共25页Exercises I am an American boy I came to China two years ago.I _(study)here for two years.My father often (take)me_ (play)football on t

20、he playground.Last week I _(take)to the park by him.We saw a lot of monkeys (jump)in the tree.I heard a voice from behind When I (walk )along the river.I thought myself.“It must_ (be)Mr.Brown.He _(take)photos.”We_ (enjoy)that day.We _ (go)back to America next week.have studied takesto playWas taken wakedjumpbeis takingenjoyedwill go第24页/共25页谢谢您的观看！第25页/共25页