中考英语二轮复习课件现在完成时.pptx

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1、现在完成时用法用法0101(一)表过去发生的动作对现在造成的影响和结果常与already,yet,just等词连用I have just cleaned my hands.(手是干手是干净净的的)I have already lost the key.(我我现现在没有在没有钥钥匙匙)I havent read that book yet.(不了解不了解书书的内容的内容)(二)表动作从过去开始一直持续到现在，并且可能一直持续下去。常与in the last/past.,since.,for.等词连用 She has learned English for 5 years.He has lived

2、 in Beijing since he was born.Has he lived in Shenzhen for 4 years?(三)表曾经经历过的事常与ever,never,before,once,twice等词连用He has been to America three times.他已经去过美国三次了。他已经去过美国三次了。I have never been to America before.之前之前我从没去过美国。我从没去过美国。结构结构02021.Our country has changed a lot.2.I have seen this film twice.3.I h

3、avent heard from him.S+have/has done肯定：肯定：肯定：肯定：havehavehavehave/has+/has+/has+/has+donedonedonedone否定：否定：否定：否定：havent/hasnt donehavent/hasnt donehavent/hasnt donehavent/hasnt done疑问：疑问：疑问：疑问：Have/Has sb.doneHave/Has sb.doneHave/Has sb.doneHave/Has sb.done?回答：回答：回答：回答：Yes,sb.Yes,sb.Yes,sb.Yes,sb.h h

4、 h have/has.ave/has.ave/has.ave/has.No,sb.No,sb.No,sb.No,sb.h h h havent/hasnt.avent/hasnt.avent/hasnt.avent/hasnt.过去分词的构成过去分词的构成0303过去分词的构成过去分词的构成(一一)规则变化：规则变化：1.直直接加接加-ed。如：。如：play-played2.以字母以字母e结结尾的尾的，去去e加加d。如：。如：name-named3.重重读闭读闭音音节节且末尾只有一个且末尾只有一个辅辅音字母，音字母，双双写写这这个个辅辅音字母再加音字母再加-ed。如：。如：stop-sto

5、pped4.以以辅辅音字母加音字母加y结结尾的，尾的，变变y为为i加加ed。如：。如：carry-carried(二二)不规则变化：不规则变化：AAA,ABB,ABC,AAB,ABATips:Tips:动词的过去分词规则变化和动词过去式一样。动词的过去分词规则变化和动词过去式一样。一、写出下列动词的过去分词形式1.wake _ 2.teach _ 3.sell _4.see _ 5.ride _ 6.pay _7.choose _ 8.throw _ 9.think _10.eat _ 11.drive _ 12.catch _13.bring _ 14.break _15.give _16.

6、get _17.know _ 18.open _19.write _ 20.forget _woken taughtsold seenridden paid chosen thrownthought eaten driven caught brought brokengiven gotten known openedwritten forgottenExercisesExercises时间标志词时间标志词0303just刚刚Hes just left.放在实前助后Ive just shut the door.adv.ready已经Hes already seen the film.位于实前助后

7、Jane has rung me up three times this morning already.adv.al或句末(常用于肯定句)yet仍然,还Has he telephoned you yet?No,not yet.adv.位于句末(常用于否定句及疑问句)Weve lived here forHe hasnt cleaned the room forfor+一段时间months.10 years.sinceHas he written back since he left home?I havent seen her since January.+时间点(从起)since.agoS

8、he has written two books since 5 years ago.His sister has been to Shanghai since 10 years ago.自从.以前how long.多久How long have you known her?How long have you sat here?since since 用来说明动作起始时间用来说明动作起始时间 “自从自从”for for用来说明动作延续时间长度用来说明动作延续时间长度 “长达长达”I have lived here for more than twenty years.I have lived

9、here for more than twenty years.I have lived here since I was born.I have lived here since I was born.My aunt has worked in a company since 1949.My aunt has worked in a company since 1949.I have not heard from my uncle for a long time.I have not heard from my uncle for a long time.注意：并非有注意：并非有for fo

10、r 作为时间状语的句子都用现在完成时作为时间状语的句子都用现在完成时 I worked here for more than twenty years.I worked here for more than twenty years.(我现在已不在这里工作。我现在已不在这里工作。)I have worked here for many years.I have worked here for many years.(现在我仍在这里工作。现在我仍在这里工作。)since&for练习练习01011.Ive already had dinner.I _ _ dinner _.2.He has jus

11、t finished his homework.He _ _ his homework _.3.Mums cooked the dinner.Mum _ _ the dinner.4.Susans learned English at school.Susan _ _ English at school.haventhadyethasnt finishedyethasnt cookedhasntlearned把下列句子改为否定句把下列句子改为否定句1.Ive already had dinner.2.He has just finished his homework.3.Mums cooked

12、 the dinner.4.Susans learned English at school.Have you already had dinner?Has he just finished his homework?Has mum cooked the dinner?Has Susan learned English at school?把下列句子改为一般疑问句把下列句子改为一般疑问句选选用用for和和since填空填空:1.We havent seen each other _ a long time.2.His father has been in the factory _ 10 ye

13、ars ago.3.The film has been on _ 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 timeforsinceforsinceforsince1.Jill has been in Ireland _ Monday.2.Jill has been in Ireland _ three days.3.My aunt has lived in Australia _15 days.4.Margaret is in her office.She has been there _ 7 oclock.sinceforforsince选用for和since填空: