现在完成时讲解（完整版）ppt课件.ppt

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1、The Present Perfect tense,Present Perfect Tense 现在完成时,主语+have/has+过去分词（pp）,助动词,无意义,现在完成时的结构,Winter has already come，,will it still be far in spring?,主语+have/has+过去分词（pp）,否定形式 havent(have not）+过去分词 hasnt(has not)+过去分词,疑问句 把助动词 have/has 放在句首,现在完成时的结构,注：主语若是第三人称单数助动词用 has,You have planted all the trees

2、.I have planted all the trees.He/she has planted all the trees.They have planted all the trees.,区别have 和 has的用法,主语若是第三人称单数助动词用 has,1)表示到现在为止已经完成或刚刚完成的动作。Now we have planted all the trees.He has just come back.They have built many buildings in this city.,现在完成时的用法,2)表示过去发生的动作,强调结果或对现在的影响。Someone has b

3、roken the window.(窗户现在是坏的)I have already lost the key.(我现在没有钥匙)I havent read that book yet.(不了解书的内容)I have just cleaned my hands.(手是干净的),常与already(已经),yet(已经),just(刚刚),ever(曾经)等词连用.,already:常用于肯定句中.yet:常用于否定句,疑问句尾.,3)表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。She has learned English for 5 years.He has l

4、ived in Beijing since 5 years ago.,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 book for 2 weeks.,since,for 的用法:,用for 或since填空,Mr.Brown has had his TV _ 15 years.Ive taken dr

5、iving lessons _last month.My sister has had her cell phone _a month.My friends havent visited me _few days ago.We havent used our car _ a long time.She hasnt had a good cup of coffee _years.Tom has worn glasses _he was 7 years old.,for,since,for,since,for,for,since,注：并非所有for作为时间状语的句子都用现在完成时 搞清一般过去时和

6、现在完成时的区别,I worked here for more than twenty years.(我现在已经不在这里工作了)I have worked here for more than twenty years.（现在我仍在这里工作）,疑难点,辨析 have been to和 have gone to,My father has gone to Shanghai for a meeting.他（已经）去了上海。,My father has been to Shanghai for a meeting.他（曾经）去了上海。,She has been to China.她（曾经）去过中国。

7、（人已经回来了）,have been to someplace.曾经去过某地，已经回来has gone to someplace.某人去了某地，还没有回来,She has gone to China last week.上周她去了上海。（人可能回来了也可能没回来）,用have/has been to,have/has gone to填空：1.Where is your brother?He _ the shop.Hell be back soon.2._ you ever _ to America?Yes,I _ New York twice.3.Here you are at last!Wh

8、ere _ you _?I _ London.4.David _Australia.Im sure hes already arrived.5.Is Benny here?No,he _ the school library.He left five minutes ago.,has gone to,Have been to,have been to,have been,have been to,has gone to,has gone to,9.He _(go)to school on foot every day.10._ you _(find)your science book yet?

9、11.If it _(be)fine tomorrow,Ill go with you.12.The students _(read)English when the teacher came in.13.Look!The monkey _(climb)the tree.14.My mother _(come)to see me next Sunday.15.Ive lost my pen._ you _(see)it anywhere?,goes,have,found,is,were reading,is climbing,is coming,Have,seen,1.I_ already _

10、(see)the film.I _(see)it last week.2._ he _(finish)his work today?Not yet.3.My father _ just _(come)back from work.He is tired now.4.Wheres Li Ming?He _(go)to the teachers office.5.I _(work)here since I _(move)here in 1999.6.So far I _(make)quite a few friends here.7.How long _ the Wangs _(stay)here

11、?For two weeks.8.I _ just _(finish)my homework.,have,seen,saw,Has,finished,has,come,has gone,have worked,moved,have made,have,stayed,have,finished,1.have,seen,saw 2.Has,finished 3.has,come 4.has gone 5.have worked,moved 6.have made 7.have,stayed 8.have,finished 9.goes 10.have,found 11.is 12.were reading 13.is climbing 14.is coming 15.Have,seen,THE END,