現(xiàn)在完成時態(tài).ppt

1、Welcome to our class,-現(xiàn)在完成時態(tài),語法練習(xí)課,時態(tài),不同時間發(fā)生的動作，動詞要用不同形式,已學(xué)習(xí)過的時態(tài),1.v原形 2. v三單,am/is/are+v-ing,1.will/shall+v原形 2.am/is/are going to +v原形,1.v-ed（規(guī)則動詞） 2.不規(guī)則動詞,was/were+v-ing,判斷下列句子的時態(tài),1.She works in a factory. 2.I was doing my homework at this time yesterday. 3.We are going to have a picnic this Sund

2、ay. 4.They held a sports meeting last week. 5.Are you helping your mother .,一般現(xiàn)在時,過去進(jìn)行時,一般將來時,一般過去時,現(xiàn)在進(jìn)行時,現(xiàn)在完成時,1.過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果。,2.過去已經(jīng)開始，持續(xù)到現(xiàn)在的動作或狀態(tài),動詞構(gòu)成：have/has+v過去分詞,had breakfast,I have just had my breakfast.,(現(xiàn)在我不餓),Im not hungry now,moved here in 2000,I still live here,I have lived here

3、for three years.,I have lived here since 2000/three years ago.,now,現(xiàn)在完成時動詞構(gòu)成: have / has + v 過去分詞,助動詞,否定,havent hasnt,疑問,Have you? Has he?,動詞的過去分詞形式,1.規(guī)則動詞 2.不規(guī)則動詞,finish-finished-finished live-lived-lived carry-carried-carried stopstopped-stopped,Eg.,gowentgone see-sawseen forgetforgot-forgotten,I,

4、 finish, homework,I havent finished my homework.,Have you finished your homework? Yes, I have. / No, I havent.,I have finished my homework.,1. 她成為一名護(hù)士已經(jīng)三年了。 2. 我五年前就認(rèn)識李雷了。 3. 那些相片我已經(jīng)寄給他了。（post） 4. 我來到這個學(xué)校后，他就一直教我。 5. 我剛丟了我的歷史書。,She has been a nurse for three years.,I have known Lilei since five year

5、s ago.,I have already posted the photos to him.,He has taught me since I came to the school.,I have just lost my history book.,( 1).for+表示一段時間的短語 ( 2).since+表示過去時間點(diǎn)的詞語 ( 3).since+表示過去時間的時間狀語從句,eg.I have been a teacher _ a year. He has been at this school _ 1992. We have learned 1,000 English words _

6、 we came to this school.,for,since,since,B. just, already, yet, before/ ever, never 有此類副詞時,常強(qiáng)調(diào)動作完成,不強(qiáng)調(diào)動作的持續(xù).,eg.Have you _been to Japan? I have _ finished my homework. I have finished my homework _. I havent finished my homework _.,ever,just,already,yet,1.現(xiàn)在完成時句中常見的時間 A.表示從過去一直持續(xù)到現(xiàn)在,不能是具體過去時間,2.區(qū)分短暫

7、性動詞與持續(xù)性動詞. 表示短暫性(瞬間性)的動詞在現(xiàn)在完成時的句中不能和一段時間連用.即for,since短語或how long問句,come/arrive go out leave begin buy borrow join die catch a cold,be at/in ,be out,be away (from),be on,have,keep,be a member of,be dead,have a cold,改錯:,How long have you become a league member？ For more than one year. Have you arrived here since last night. Yes，youre right. The dog has died for a month. He has gone to Shangha