初中英语人教版八年级下册现在完成时的用法ppt课件.ppt

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1、上一页,现在完成时,下一页,主菜单,现在完成时,主菜单,上一页,下一页,现在完成时的构成,现在完成时的主要用法,现在完成时的时间状语,短暂性动词与时间段的关系,have been 与have gone 比较,与一般过去时的用法比较,现在完成时的主要用法,1.表示过去发生的某一动作对现在造成的影响或结果。,2.表示过去已经开始,持续到现在的动作或状态,现在完成时的构成,主菜单,上一页,下一页,have(has）+过去分词,现在完成时的基本句型：,肯定式：主语+助动词have/has+动词的过去分词.疑问式：助动词Have/Has+主语+动词的过去分词?否定式:主语+助动词have/has+not

2、+动词的过去分词.,例句：,6.Has he gone to the library?他是去了图书馆吗？Yes,he has.是的，是去那里了。No,he hasnt.不，他没去那里。7.How long has Mrs Smith been in Beijing？Smith夫人来北京多长时间了？,现在完成时的时间状语,常与already,（肯定句）yet,（否，疑问句）never,ever,just,before,up to now,so far,到目前为止 for+一段时间 since+时间点 these days,上一页,下一页,主菜单,a）already 往往用于肯定句，用在疑问句时表

3、示强 调或加强语气；yet 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）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？,2.yet在现在完成时中的用法,否定句:句末“还(没)”,疑问句:句末“己经”,Eg.I havent had breakfast yet.Have you had breakfast y

4、et?,b）never 是否定词，表示“从来没有”，而ever 表示“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？,c）just表示“刚刚”（用于完成时态时，与already，never 等副词的位置一样，多用在助动词have/has和动词过去分词之间）,He has just come back.他刚刚回来。They have just finished the work.他们刚刚完成那项工作。,上一页,下一页,I have learnt English

5、 for more than ten years.我已经学了10多年的英语。(从10年前开始,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(半个小时前已经开始游泳,到现在还在游),现在完成时的主要用法,主菜单,.表示过去已经开始,持续到现在的动作或状态.常与since+过去的时间点，for+一段时间，so far 等时间状语连用。,1.for+,Eg.I have been here for 5 weeks.Hes studied English for 3 years.,一段时间,2.since+,从句(一般过去时),单词,词

6、组,(表示过去某一时间的)时间点,Eg.I have been here since 2000.I have been here since 5 years ago.I have been here since I graduated in 2000.,since:(自以来)1)since+时间点Hehasstayedheresince5oclock.2)since+时间段+agoHehasstayedheresince5hoursago.3)since+从句ShehastaughtEnglishsincehecamehere.for:(长达）for+时间段He has kept the bo

7、ok for 2 weeks.,since,for 的用法:,Take notes,注1):since 也可单独使用,表示“自那时起”;另外since前也可加上ever,以加强语气.Eg.I have been here(ever)since.I have been here(ever)since I graduated in 2000.,注2):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

8、 since 2 hour ago.,How long has she stood here?,短暂性动词与延续动词间的转换,leave-come/go(to)-arrive(at/in)-get(to)-reach-buy-borrow-finish-,join-start/begin-die-close-open-return-marry-become-,be away(from),be(in/at),be(in/at),be(in/at),be(in/at),have,keep,be over,be in/be a/an,be on,be dead,be closed,be open,b

9、e back,be married,be,短暂性动词与时间段的关系,短暂性动词在肯定句、疑问句中不能与时间段连用，这些动词是：become,begin,buy,borrow,come(go,arrive),die,finish,join,leave,等。,上一页,下一页,为了表述这种意思,我们常用相应的延续性动词 来代替短暂性动词。,主菜单,但在否定句中，短暂性动词可以与时间段连用。如：I havent bought the bike for a year.我买这辆自行车还不到一年。She hasnt come here for an hour.她来这儿还没有一个小时。,上一页,下一页,主菜单

10、,翻 译 练 习：1.我买了这块手表五年了。2.这位老人已经死了十年了。,I have bought this watch for five years.I have had this watch for five years/since 5 years ago.,The old man has died for ten years.The old man has been dead for ten years/since 10 years ago.,W,W,下一页,上一页,主菜单,3.他已经回来三天了。4.自从六点钟他就来这儿了。5.我离开家乡已十年了。,He has come back f

11、or 3 days.He has been back for 3 days/since 3 days ago.,He has come here since 6 oclock.He has been here since 6 oclock.,I have left hometown for 10 years.I have been away from hometown for 10 years.,W,W,W,下一页,上一页,主菜单,have been 与have gone 的用法比较,have been to 意思是“到过，去过”，表示曾经到过某处，但现在人不在那儿。have gone to

12、意思是“去了”，表示已经去了某地，现在人可能在去的途中或已在那儿了。have been in 意思是“呆在某处一段时间了”,上一页,下一页,主菜单,Has she ever been to Nanjing?她曾去过南京吗？You have never been there,have you?你以前从未去过那儿，是吗？I have been to Guiling,I went there last year.我去过桂林，我去年去的。She has gone to Nanjing.她已经去南京了。,上一页,下一页,主菜单,与一般过去时的用法比较,一.现在完成时和一般过去时都是说过去的事情，但现在完

13、成时注意的不是事情本身，而是强调事情与现在保持的某种密切联系（如现在的结果，影响,一直延续到现在等）;而一般过去时，则只讲述发生在过去的动作和事情与现在没有关系。,上一页,下一页,主菜单,四)It is+一段时间+since+句子(一般过去时)=一段时间+has passed+since+句子(一般过去时),Eg.It is five years since I joined the army.=Five years has passed since I joined the army.,二当有一个表示过去某一特定时间的状语时，不用现在完成时，而用一般过去时:,上一页,下一页,eg:I saw

14、 the film on television yesterday.,但since(自以来)+某一过去时间或叙述过去事情的从句总是与现在完成时连用。,eg：They have known each other since 1950.,Since he was a child,he has lived in England.,主菜单,三常与一般过去时连用的典型的 表示过去时间的状语:,上一页,下一页,yesterday(昨天),the day before yesterday(前天),just now(刚才)，时间+ago,last+时间 等;,eg:The plane took off ten

15、 minutes ago.,We finished our task last week.,主菜单,不规则动词的过去式和过去分词,AAA型,特殊情况:read read readread原形发音为/ri:d/,过去式和过去分词发音为/red/,AAB型,ABA型,ABB型,ABC型,上一页,现在完成时练习,主菜单,动 词 填 空：1._ you _(clean)the room?Yes,we _(do)that already.When _ you _(do)it?We _(do)it an hour ago.2._ he _(see)this film yet?Yes.When _ he _

16、(see)it?He _ it last week.3.How many times _you_(be)there?,Have,cleaned,have done,did,do,did,Has,seen,did,see,saw,have,been,下一页,上一页,主菜单,4.I _(read)the novel twice.Its interesting.5.She _(go)to Pairs,hasnt she?Yes.How _ she _(go)there?She _(go)there by air.6.So far,many countries _(develop)their soft

17、ware programs.7.Mr Chen _(give)up smoking last year.8.Mr Chen _(give)up smoking since last year.,have read,has gone,did,go,went,have developed,gave,has given,下一页,上一页,主菜单,选用 for和 since填空:1.We havent seen each other _ a long time.2.His father has been in the Party _ 10 years ago.3.The film has been on

18、 _ 20 minutes.4.Mr Green has worked here _ he came to China.5.His grandparents have been dead _ several years.6.Its five years _ we met last time.,for,since,for,since,for,since,下一页,上一页,主菜单,用Have been to,have gone to,have been in 填空,Mike and his parents _ the north for half a year.Mum is not at home

19、now.she _ the shop._ you ever _ to kunming?Never.Where _ you _ these days?Has Jim arrived yet?Yes,he _ here for several days.Where is Peter?I dont know where he _.Hi Jim!Where _ you _?Li Lei is looking for you.,have been in,has gone to,have been,Have been,has been,has gone,have been,下一页,上一页,主菜单,改 错1

20、.How long have you begun to study English?2.I have borrowed this book for two weeks.3.The river has become very dirty since last August.4.Our manager is away today.He has been to Guangzhou on business.5.He has gone out for two years.,studied,kept,been,gone,been,下一页,上一页,主菜单,The house is dirty.We _it

21、for weeks.A didnt clean B hadnt cleaned C dont clean D havent cleaned2.-_the sports meeting might be put off.-Yes,it all depends on the weather.A Ive been told B Ive told C Im told D I told3.-Im sorry to keep you waiting.-Oh,not at all.I _here only a few minutes.A have been B had been C was D will b

22、e4.You dont need to describe her.I _ her several times.A.had met B have met C met D meet 5.-Will you go to Beijing for vacation?-I _ to go,but I dont know if I can go.A was planning B have planned C had been planning D have been planning,6.-When will they leave?-They _very soon.A do leave B are leav

23、ing C have left D leave7-Was he studying for an exam?-Yes,hes _ it last week.A doing B to take C making D to give8.The teacher told the pupils that the earth _ round.A is B would C was D were9.She _ such an interesting book before.A was never reading B will never read C had never read D has never re

24、ad 10.How long do you think the meeting _ A is lasting B is lasted C will last D lasts,、翻译下列句子：1.你曾经吃过鱼和薯条吗？2.我刚刚丢了我的语文书。3.我以前从来没去过那个公园。4.他已经吃过午饭了。5.你已经看过这部电影了吗？6.我哥哥还没回来。7.我自从上星期看过这部电影。8.自从1992年他住在这里。9.这本字典我已买了三年了。10.他离开中国三年了,1.Have you eatten fish and french frise?2.I have lost my Chinese book.3 I have never been to that park.4.He has already had lunch.5 Have you seen this movie yet?6 My brother has not returned.7 I have seen this movie since last week.8 He has lived here since 1992.9 I have had this dictionary for three years.10 He has been away China for three years.,