人教版英语八年级下册语法-现在完成时-课件.pptx

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1、 现在完成时现在完成时1课前小测课前小测1.你还能回想起我们学过的时态么?你还能回想起我们学过的时态么?2.Several journalists(记者)(记者)_ the lawyer(律师)(律师)about the case(案件)(案件)an hour ago.A.interview B.interviewed C.will interview D.had interviewed2现在完成时一、概念:一、概念:3present(now)futurepast 现在完成时现在完成时(present perfect tense)4现在完成时have/has(助动词)(助动词)+done(过去

2、分词)(过去分词)主语主语+have/has+done+其他其他He has finished his work.He hasnt finished his work.5现在完成时一般疑问:一般疑问:Have/Has+主主+done+其它其它?回答回答 :Yes,主主+have/has.No,主主+havent/hasnt.特殊疑问:特殊疑问:特疑词特疑词+have/has+主主+done+其它其它?Has he finished his work?Yes,he has./No,he hasntWhat has he finished?6现在完成时Q:注意到动词的变化没有?自己背7现在完成时8

3、上一页下一页 Typeoriginal p.t p.pcostcostcostreadreadreadmeetmetmetcatchcaughtcaught rideroderiddenspeakspokespokenkeepkeptkeptdrinkdrankdrunkeatateeatenABBAAA ABC主菜单9现在完成时三、时间标志词三、时间标志词:already yet so far recently、lately ever 已经已经 还、仍、已经还、仍、已经 至今为止至今为止 最近最近 曾经曾经 since+时间点时间点 for+时间段时间段 自从自从.以来以来 持续持续.in

4、the last few years in the past 3 years.在过去的几年里在过去的几年里 在过去的在过去的3年里年里10现在完成时老师一般怎么考:老师一般怎么考:单选、填词单选、填词把动词挖走留个空。把动词挖走留个空。一旦题目里面一旦题目里面没有动词没有动词了了好了,好了,找时间标志词找时间标志词吧,一定有。吧,一定有。考点!考点!11现在完成时的Have you Have you been to the been to the Summer Palace?Summer Palace?(你曾去过颐和园吗?)I have I have had a car.had a car.(

5、我从未有过汽车。)I I ve seen it ve seen it.(我从未有过汽车。)12 never 是否定词,表示是否定词,表示“从来没有从来没有”,而,而ever 表示表示“曾经曾经”We have never been to the Great Wall.我们从来没有去过长城。Have you ever been to Canada?你们曾经去过加拿大吗?13现在完成时的Ive just had breakfast.Ive just had breakfast.我刚刚吃完早饭。What have they just done?What have they just done?(他们

6、刚刚做了什么。)与区别just now,just now 用于一般过去时14现在完成时 3.3.表示过去发生或已完成的某一动作对现表示过去发生或已完成的某一动作对现在造成的影响和结果:在造成的影响和结果:时常和副词already,yet等连用。-Its so dark.-Its so dark.-Someone has turned off the light.-Someone has turned off the light.(有人刚把灯关了有人刚把灯关了,对现在造成的结果是对现在造成的结果是:现在很黑现在很黑)-Are you free?-I have finished my homewo

7、rk.I am free-I have finished my homework.I am free(我已我已经经完成了家庭作完成了家庭作业业,对现在造成的结果是很有空对现在造成的结果是很有空)15Mother:John,clean your teeth please.John:Mum,I them.16a)already 往往用于肯定句,用在疑问句时表示强往往用于肯定句,用在疑问句时表示强 调或加强语气;调或加强语气;yet 用于否定句和疑问句。用于否定句和疑问句。He has already left here.他已经离开这里了。Has he already left here?他(真的)

8、已经离开这里了吗?(表示加强语气)My teachers havent had breakfast yet.我的老师们还没有吃早饭。Have you written to your parents yet?你已经给你父母写过信了吗?17yet在现在完成时中的用法在现在完成时中的用法 否定句否定句:句末句末“还还(没没)”疑问句疑问句:句末句末“己经己经”Eg.I havent had breakfast yet.Have you had breakfast yet?18现在完成时4.4.表示表示过去过去已经开始已经开始,持续到持续到现在的动作或状现在的动作或状态态.常与常与since+sinc

9、e+过去的时间点,过去的时间点,for+for+一段时一段时间,间,so far so far 等时间状语连用。等时间状语连用。I have learnt English for more than I have learnt English for more than ten years.ten years.我已经学了我已经学了10多年的英语。多年的英语。(从从10年前开始年前开始,持续到现在还在学持续到现在还在学)She has swum since half an hour ago.我已经游泳了半个小时我已经游泳了半个小时(半个小时前已经开始游泳半个小时前已经开始游泳,到现在还在游到现在

10、还在游)19现在完成时since和和for的用法的用法20e.g.Lily has been away from home since last Friday.since last Fridaylast Fridaypresentpastsince+时间点时间点Lily自从上周五就离开了家。自从上周五就离开了家。21现在完成时 sincesince Mr.Smith has worked here since 1984.(1984年以来,史密斯先生一直在这工作。)I have known Daniel since 7 years ago.(自从7年前我就认识丹尼尔。)Hes learned a

11、bout 500 words since he went to college.(他上大学以来大约学了五千个英语单词)22e.g.I have been in the new school for a week.for a weeklast weekpresentpastfor+时间段时间段我已经来新学校一周了。我已经来新学校一周了。23现在完成时 forfor一段时间一段时间(two weeks/six months/five daystwo weeks/six months/five days)forfor短语短语表示动作延续多长时间表示动作延续多长时间 。He has taught in

12、 this school for four years.(我们认识有二十年了。)I havent seen her for a long time.(我好久没有见到她了。)24since:(自自以来以来)1)since+时间点时间点He has stayed here since 5 oclock.2)since+时间段时间段+agoHe has stayed here since 5 hours ago.3)since+从句从句She has taught English since he came here.for:(长达)长达)for+时间段时间段He has kept the book

13、 for 2 weeks.since,for 的用法的用法:25注):对for或since引导的时间状语提问 必须用how long,决不能用when.Eg.*I have lived here for 10 years.How long have you lived here?*She has stood here since 2 hour ago.How long has she stood here?26Fill in the blanks with for or since.1.His father has been dead _ many years.2.He has been aw

14、ay from the army _ seven years because of a leg wound.3.He has been in Beijing _ 2003.4.He has been a member of Helpers Club _ 2004.5.He has had a house _ 2005.6.He has kept the car _ one year.forforsincesincesince27现在完成时瞬间动词与持续动词的转换:瞬间动词与持续动词的转换:Hein the army.(join-be in)他参军已有他参军已有3年了。不用年了。不用has jo

15、ined she for 10 years.(die-be dead)她已经去世十年了。不用她已经去世十年了。不用has died考点!考点!28现在完成时29现在完成时He has fallen asleepfallen asleep for an hour.他睡了一小时了。()He has been asleepbeen asleep for an hour.(fall asleep,“入睡”为短暂动作,但be asleep“睡着”则为状态动词,可延续。)30在现在完成时中,一次性动词不能在现在完成时中,一次性动词不能和一段时间状语连用和一段时间状语连用 例:例:He has bought

16、 the book for 3 years.因因buy这个一次性动词不能和一段时间这个一次性动词不能和一段时间for 3 years连用连用 buy have have hadHe has had the book for 3 years.(错)错)31since 8:00The woman left home at 8:00.for 2 hours8:00present10:00past短暂性动词短暂性动词 延续性动词延续性动词 leave be away fromShe has been away from home since 8:00.=She has been away from h

17、ome for 2 hours.32He bought a computer in 2007.for two years2007present2009pastsince 2007He has had a computer since 2007.=He has had a computer for two years.短暂性动词短暂性动词 延续性动词延续性动词 buy have33 borrow keep lose be lost break be broken open be open closebe closed stop be over begin/start be on finish/e

18、nd be over get up be up get married be marriedcome/arrive/get to/reach/go be here/in/at 下一页还有其它的归纳如下:还有其它的归纳如下:34come-leave-get to know-die-buy-borrow-marry-catch a cold-join -fall ill-bebe away(from)knowbe deadhavekeep be marriedhave a coldbe a member of/be inbe ill351.His father _(die)in 1992.His

19、father _ for many years.2.He _(leave)the army because of a leg wound in 2002.He _ the army for nine years because of a leg wound.3.He _(come)to Beijing in 2003.He _ Beijing since 2003.diedhas been deadlefthas been away fromcamehas been in364 He _(join)Helpers Club in 2004.He _ a member of Helpers Cl

20、ub since 2004.5.He _(buy)a house in 2005.He _ a house since 2005.6.He _(borrow)the car in 2009.He _ the car for two year.joinedhas been boughthas hadborrowedhas kept37 但在否定句中,短暂性动词可以与但在否定句中,短暂性动词可以与时间段连用。时间段连用。如:如:I havent bought the bike for a year.I havent bought the bike for a year.我买这辆自行车还不到一年。我

21、买这辆自行车还不到一年。She hasnt come here for an hour.She hasnt come here for an hour.她来这儿还没有一个小时。她来这儿还没有一个小时。上一页下一页主菜单38现在完成时have been tohave been to、have gone tohave gone to、have been inhave been in三者区别三者区别have been to have been to 曾去过曾去过.(已经回来)(已经回来)have gone to have gone to 已经去了已经去了.(还没回来)(还没回来)have been

22、in have been in 在在.待了多久待了多久(+(+一段时间一段时间 )考点!考点!39have been 与have gone 的用法比较 1.have been to 意思是意思是“到过,去过到过,去过”表示表示曾经到过某处曾经到过某处,但现在人不在那儿。,但现在人不在那儿。Eg.Has she ever been to Nanjing?Has she ever been to Nanjing?2.have gone to 意思是意思是“去了去了”,表示,表示已经去已经去了了某地,现在人可能在去的途中或已在那儿某地,现在人可能在去的途中或已在那儿了。了。Eg.You have b

23、een in Beijing for 2 years.Eg.You have been in Beijing for 2 years.3.have been in 意思是意思是“呆在某处一段时间了呆在某处一段时间了 Eg.She has gone to Nanjing.Eg.She has gone to Nanjing.40 与一般过去时的用法比较一一.现在完成时和一般过去时都是说过现在完成时和一般过去时都是说过去的事情,去的事情,而一而一般过去时,则只般过去时,则只讲述讲述发生在过去的发生在过去的动作和事情动作和事情与现在没有关系与现在没有关系。上一页下一页主菜单41eg:He has b

24、ought an English-Chinese dictionary.他已经买了一本英汉字典。他已经买了一本英汉字典。He bought an English-Chinese dictionary.他曾买过一本英汉字典。他曾买过一本英汉字典。上一页下一页第一句用现在完成时时态,想表达意为:第一句用现在完成时时态,想表达意为:“He He bought an English-Chinese dictionary.And bought an English-Chinese dictionary.And he still has ithe still has it”“过去他买了一本英汉字典,过去他

25、买了一本英汉字典,现在他还有这本字典现在他还有这本字典”。第二句用过去时只叙述过去他买过一本英汉字第二句用过去时只叙述过去他买过一本英汉字典这一事实,至于现在他是否有这本字典并未强典这一事实,至于现在他是否有这本字典并未强 调说明。调说明。主菜单42二当有一个表示二当有一个表示过去某一特定时间过去某一特定时间的状语时,不用现在完成时,而用的状语时,不用现在完成时,而用一般过去时一般过去时:上一页下一页eg:I saw the film on television yesterday.但但since(since(自自以来以来)+)+某一过去时间或叙某一过去时间或叙述过去事情的从句总是与现在完成时

26、述过去事情的从句总是与现在完成时连用。连用。eg:They have known each other since 1950.Since he was a child,he has lived in England.主菜单43现在完成时44现在完成时I (leave)my hometown since 3 years ago.A.leaved B.have left C.left D.have been away from 45现在完成时 Do you know where the twins are?Yes.They _ Fuzhou.A.have gone to B.have been t

27、o C.have gone D.went to46课后小测试PART31.Why not go to see the movie with me?Because I _ it.A.have seen B.will see C.see D.saw2.She has _ this bike for a year.2.She has _ this bike for a year.A buy B bought C have D hadA buy B bought C have D had47课后小测试PART33.I _this book for two weeks,I have to return

28、it now.3.I _this book for two weeks,I have to return it now.A borrowed B have borrowed A borrowed B have borrowed C kept D have keptC kept D have kept4.Have you ever _to the Great Wall?Its very beautiful.4.Have you ever _to the Great Wall?Its very beautiful.A gone B been C went D go A gone B been C went D go 48PART4总结1.2.3.49PART4总结50今天的课程就到这里啦今天的课程就到这里啦祝好好学习天天向上祝好好学习天天向上51

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