中考英語二輪復習課件 現(xiàn)在完成時

1、現(xiàn)在完成時用法01(一) 表過去發(fā)生的動作對現(xiàn)在造成的影響和結(jié)果常與already, yet, just等詞連用I have just cleaned my hands. (手是干凈的)I have already lost the key. (我現(xiàn)在沒有鑰匙)I havent read that book yet . (不了解書的內(nèi)容)(二) 表動作從過去開始一直持續(xù)到現(xiàn)在，并且可能一直持續(xù)下去。常與in the last /past., since., for .等詞連用 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) 表曾經(jīng)經(jīng)歷過的事常與ever, never, before,once,twice等詞連用He has been to America three times. 他已經(jīng)去過美國三次了。I have never been to America before. 之前我從沒去過美國。結(jié)構(gòu)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疑問：Have/Has sb. done?回答：Yes, sb. have/has. No, sb. havent/hasnt.過去分詞的構(gòu)成03過去分詞的構(gòu)成(一)規(guī)則變化：1.直接加-ed。如：play-played2.以字母e結(jié)尾的，去e加d 。如：name-named3.重讀閉音節(jié)且末尾只有一個輔音字母，雙寫這個輔音字母再加-ed。如：stop-stopped4.以輔音字母加y結(jié)尾的，變y為i加ed。如： carry-carried(二)不規(guī)則變化：AAA, ABB, ABC, AAB

4、, ABATips:動詞的過去分詞規(guī)則變化和動詞過去式一樣。一、寫出下列動詞的過去分詞形式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時間標志詞03just剛剛Hes just left.放在實前助后Ive just shut the door.adv.ready已經(jīng)Hes already seen the film.位于實前助后Jane has rung me up three times this morning already.adv.al或句末(常用于肯定句)yet仍然,還Has he telephoned you yet?No, not

6、 yet.adv.位于句末(常用于否定句及疑問句)Weve lived here forHe hasnt cleaned the room forfor+一段時間months.10 years.sinceHas he written back since he left home?I havent seen her since January.+時間點(從起)since . agoShe has written two books since 5 years ago.His sister has been to Shanghai since 10 years ago.自從.以前how long

7、. 多久How long have you known her?How long have you sat here? since 用來說明動作起始時間 “自從” for用來說明動作延續(xù)時間長度 “長達”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 作為時間狀語的句子都用現(xiàn)在完成時

8、I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。) I have worked here for many years. (現(xiàn)在我仍在這里工作。)since & for練習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把下列句子改為否定句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?把下列句子改為一般疑問句選用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