中考英语二轮复习课件 现在完成时

1、现在完成时用法01(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. (手是干净的)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)(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 in Beijin

2、g 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。I have never been to America before. 之前我从没去过美国。结构021. Our country has changed a lot.2. I have seen this film twice.3. I havent heard from him.S+ha

3、ve/hasdone肯定：have/ has + done否定：havent / hasnt done疑问：Have/Has sb. done?回答：Yes, sb. have/has. No, sb. havent/hasnt.过去分词的构成03过去分词的构成(一)规则变化：1.直接加-ed。如：play-played2.以字母e结尾的，去e加d 。如：name-named3.重读闭音节且末尾只有一个辅音字母，双写这个辅音字母再加-ed。如：stop-stopped4.以辅音字母加y结尾的，变y为i加ed。如： carry-carried(二)不规则变化：AAA, ABB, ABC, AAB

4、, ABATips: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. get _17. know _ 18. open _19. write _ 20. forget _woken taughtsold seenridden paid chosen thrownth

5、ought eaten driven caught brought brokengiven gotten known openedwritten forgottenExercises时间标志词03just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

6、 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 . agoShe has written two books since 5 years ago.His sister has been to Shanghai since 10 years ago.自从.以前how long

7、. 多久How long have you known her?How long have you sat here? since 用来说明动作起始时间 “自从” for用来说明动作延续时间长度 “长达”I have lived here for more than twenty years.I have lived here since I was born.My aunt has worked in a company since 1949. I have not heard from my uncle for a long time.注意：并非有for 作为时间状语的句子都用现在完成时

8、I worked here for more than twenty years. (我现在已不在这里工作。) I have worked here for many years. (现在我仍在这里工作。)since & for练习01Ive already had dinner. I _ _ dinner _.2. He has just finished his homework. He _ _ his homework _.3. Mums cooked the dinner. Mum _ _ the dinner.4. Susans learned English at school.

9、Susan _ _ English at school.haventhadyethasnt finishedyethasnt cookedhasntlearned把下列句子改为否定句Ive already had dinner. 2. He has just finished his homework. 3. Mums cooked the dinner.4. Susans learned English at school.Have you already had dinner?Has he just finished his homework?Has mum cooked the dinn

10、er? Has Susan learned English at school?把下列句子改为一般疑问句选用for和since填空:1.We havent seen each other _ a long time.2.His father has been in the factory _ 10 years 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