現(xiàn)在完成時講解(完整版)PPT幻燈片.ppt

1、The Present Perfect tense,Present Perfect Tense 現(xiàn)在完成時,2,主語 + have/ has + 過去分詞（pp）,助動詞,無意義,現(xiàn)在完成時的結(jié)構(gòu),Winter has already come，,will it still be far in spring ?,3,主語 + have/ has + 過去分詞（pp）,否定形式 havent ( have not ） +過去分詞 hasnt ( has not ) +過去分詞,疑問句 把助動詞 have / has 放在句首,現(xiàn)在完成時的結(jié)構(gòu),注：主語若是第三人稱單數(shù)助動詞用 has,4,You

2、 have planted all the trees. I have planted all the trees. He/she has planted all the trees. They have planted all the trees.,區(qū)別have 和 has的用法,主語若是第三人稱單數(shù)助動詞用 has,5,1) 表示到現(xiàn)在為止已經(jīng)完成或剛剛完成的動作。 Now we have planted all the trees. He has just come back. They have built many buildings in this city.,現(xiàn)在完成時的用法,6

3、,2) 表示過去發(fā)生的動作,強(qiáng)調(diào)結(jié)果或?qū)ΜF(xiàn)在的影響。 Someone has broken the window. (窗戶現(xiàn)在是壞的) 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) I have just cleaned my hands. (手是干凈的),常與already(已經(jīng)), yet(已經(jīng)), just(剛剛),ever(曾經(jīng))等詞連用.,already: 常用于肯定句中. yet: 常用于否定句,疑問句尾.,7,3) 表示從過去開始并持續(xù)到現(xiàn)在的動作或狀態(tài)，常與包括現(xiàn)在在

4、內(nèi)的一段時間的狀語連用。 She has learned English for 5 years. He has lived in Beijing since 5 years ago.,8,since: (自以來) 1)since+時間點 Hehasstayedheresince5oclock. 2)since+ 時間段+ ago Hehasstayedheresince5hoursago. 3)since+ 從句 ShehastaughtEnglishsincehecamehere. for: (長達(dá)） for+ 時間段 He has kept the book for 2 weeks.,s

5、ince , for 的用法:,9,用for 或since填空,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 _few days ago. We havent used our car _ a long time . She hasnt had a good cup of coffee _years. Tom has worn glasses _

6、he was 7 years old.,for,since,for,since,for,for,since,10,注：并非所有for作為時間狀語的句子都用現(xiàn)在完成時 搞清一般過去時和現(xiàn)在完成時的區(qū)別,I worked here for more than twenty years. (我現(xiàn)在已經(jīng)不在這里工作了) I have worked here for more than twenty years. （現(xiàn)在我仍在這里工作）,疑難點,11,辨析 have been to和 have gone to,My father has gone to Shanghai for a meeting. 他

7、（已經(jīng)）去了上海。,My father has been to Shanghai for a meeting. 他（曾經(jīng)）去了上海。,She has been to China . 她（曾經(jīng)）去過中國。（人已經(jīng)回來了）,have been to someplace. 曾經(jīng)去過某地，已經(jīng)回來 has gone to someplace.某人去了某地，還沒有回來,She has gone to China last week. 上周她去了上海 。（人可能回來了也可能沒回來）,12,用have/has been to, have/has gone to填空： 1.Where is your brot

8、her? He _ the shop. Hell be back soon. 2. _ you ever _ to 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 bee

9、n to,have been,have been to,has gone to,has gone to,13,9. He _ (go) to school on foot every day. 10._ you _ (find) your science book yet? 11. If it _ (be) fine tomorrow, Ill go with you. 12. The students _ (read) English when the teacher came in. 13. Look! The monkey _ (climb) the tree. 14. My mothe

10、r _ (come) to see me next Sunday. 15. Ive lost my pen. _ you _ (see) it anywhere?,goes,have, found,is,were reading,is climbing,is coming,Have, seen,14,1. I_ already _ (see) the film. I _ (see) it last week. 2. _ he _ (finish) his work today? Not yet. 3. My father _ just _ (come) back from work. He i

11、s tired now. 4. Wheres Li Ming ? He _ (go) to the teachers office. 5. I _ (work) here since I _ (move) here in 1999. 6. So far I _(make) quite a few friends here. 7. How long _ the Wangs _(stay) here ? For two weeks. 8. I _ just _ (finish) my homework.,have, seen, saw,Has, finished,has, come,has gone,have worked, moved,have made,have, stayed,have, finished,15,1. have, seen, saw 2. Has, finished 3. has, come 4. has go