《现在完成时》PPT课件.ppt

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1、Revision moduleA,Miss Xie,主语+have/has+过去分词(pp.),现在完成时的结构,We have travelled around the world,Grammar,肯定形式 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,Grammar,现在完成时的结构,We have travelled around the world,We havent(have not)travelled around the world,Have

2、we travelled around the world?,Yes,I/We have.No,I/We havent(have not).,回答 肯定:Yes,主语+have/has 否定:No,主语+havent(have not)/hasnt(has not),You _ planted all the trees.I _ planted all the trees.My brother _ planted all the trees.He/she _ planted all the trees.They _ planted all the trees.,结论:主语若是第三人称单数助动词

3、用 has,have,have,has,have,区别have 和 has 的用法,Grammar,第三人称:he、she、it 和单数名词,has,1、规则变化(过去分词与过去时变化规则一样),(1)、一般动词,在词尾直接加“ed”。如:work-worked-worked visit-visited-visited(2)、以“e”结尾的动词,只在词尾加“d”。如:live-lived,过去分词,Grammar,2、不规则变化,havehadhad spend spentspent makemademade saysaidsaid findfoundfound hearheardheard,

4、Grammar,过去分词,(2)过去分词与过去式形式不一样,taketooktaken speak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone,(1)过去分词与不规则动词的过去式形式一样,(3)过去分词与过去式形式不一样,taketooktaken speak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone,Grammar,(4)过去分词,过去式与动词原形一样,cutcutcut put putput letletl

5、et readreadread,过去分词,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.,Grammar,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 broken 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

6、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.,Grammar,现在完成时的用法,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 lived in Beijing since he was born.Has he lived in Shenzhen for 4 years?,常与for,since引导

7、的时间短语或从句连用.,Grammar,现在完成时的用法,for+时间段since+时间点,since+句子(一般过去时)since last year/one year ago,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),注意点1:并非所有for作为时间状语的句子都用现在完成时,Grammar,现在完成时的用法,注意点2:瞬间动词不能和时间段连用.,Grammar,现在完成时的用法,动作(短暂性动词),die,b

8、e over,leave,borrow/buy,arrive,begin,end/finish,join,marry,keep/had,be away,be here,be on(上演),be married,be in,be dead,since+时间点Hehasstayedheresince5oclock.since+时间段+ago Hehasstayedheresince5hoursago.since+从句ShehastaughtEnglishsincehecamehere.,Grammar,since、for用法,1.since(自以来),2.for(自以来),for+时间段He ha

9、s kept the book for 2 weeks.,Mr.Brown has had his TV _ 15 years.Ive taken driving lessons _last month.My sister has had her cell phone _a month.My friends havent visited me _my birthday.We havent used our car _ a long time.She hasnt had a good cup of coffee _years.Tom has worn glasses _he was 7 year

10、s old.,for,since,for,since,for,for,since,since、for用法,Grammar,Grammar,他的爷爷已经去世2年了。Nick 参军3年了.他离开深圳好长时间了。这本书我已借了4个月了.,It is 2 years since his grandpa died.,It is 3 years since Nick joined the army.,It is a long time since he left Shenzhen.,It is 4 months since I borrowed the book.,It is+时间段 since+一般过去

11、时的句子.,Grammar,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。(人已经回来了),结论: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),辨析 ha

12、ve been to和 have gone to,have been in 呆在某地方多久,常在for/since 中使用,表持续性I have been in Shunde since I was born,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 _ America?Yes,I _ New York twice.3.Here you are at last!Where _ 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,谢谢!,See you!,

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