《現(xiàn)在完成時》ppt課件

1、Revision moduleA,Miss Xie,主語 + have/ has + 過去分詞（pp.）,現(xiàn)在完成時的結(jié)構(gòu),,We have travelled around the world,,,Grammar,肯定形式 主語 + have/ has + 過去分詞（pp.）,否定形式 haven’t ( have not ） +過去分詞/ hasn’t ( has not ) +過去分詞,疑問句

2、 把助動詞 have / has 放在句首,,,Grammar,現(xiàn)在完成時的結(jié)構(gòu),We have travelled around the world,We haven’t（have not） travelled around the world,Have we travelled around the world ？,Yes,I/We have.No, I/We haven’t(have not).,回答 肯定：Yes,主語+hav

3、e/has 否定：No,主語+haven’t(have not)/hasn’t(has not),You ________ planted all the trees.I _____ planted all the trees.My brother _____ planted all the trees.He/she _____ planted all the trees.They ______ pl

4、anted all the trees.,結(jié)論:主語若是第三人稱單數(shù)助動詞用 has,have,have,has,have,區(qū)別have 和 has 的用法,Grammar,第三人稱：he、she、it 和單數(shù)名詞,has,1、規(guī)則變化（過去分詞與過去時變化規(guī)則一樣）,(1)、一般動詞，在詞尾直接加“ ed ”。如：work---worked---worked visit---visited---visite

5、d (2)、以“ e ”結(jié)尾的動詞，只在詞尾加“ d ”。 如：live---lived,過去分詞,Grammar,2、不規(guī)則變化,have—had—had spend —spent—spent make—made—made say—said—said find—found—found hear—heard—heard,Grammar,過去分詞,（2）過去分詞與過去式形式不一樣,

6、take—took—taken speak —spoke—spoken sing—sang—sung drive—drove—driven be—was/were—been go—went—gone,（1）過去分詞與不規(guī)則動詞的過去式形式一樣,（3）過去分詞與過去式形式不一樣,take—took—taken speak —spoke—spoken sing—sang—su

7、ng drive—drove—driven be—was/were—been go—went—gone,Grammar,（4）過去分詞，過去式與動詞原形一樣,cut—cut—cut put —put—put let—let—let read—read—read,過去分詞,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

8、.He has just come back. They have built many buildings in this city.,Grammar,現(xiàn)在完成時的用法,2.表示過去發(fā)生的動作,強調(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 haven’t read that

9、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.,Grammar,現(xiàn)在完成時的用法,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)在在內(nèi)的一段時間的狀語連用。

10、She has learned English for 5 years. He has lived in Beijing since he was born . Has he lived in Shenzhen for 4 years?,常與for, since引導(dǎo)的時間短語或從句連用.,Grammar,現(xiàn)在完成時的用法,for+ 時間段since+時間點 , since+ 句子(

11、一般過去時)since last year/one year ago,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）,注意點1：并非所有for作為時間狀語的句子都用現(xiàn)在完成時,Grammar,現(xiàn)在完成時的用法,注意點2:

12、瞬間動詞不能和時間段連用.,Grammar,現(xiàn)在完成時的用法,動作（短暫性動詞）,die,be over,leave,borrow/buy,arrive,begin,end/finish,join,marry,keep/had,be away,be here,be on(上演）,be married,be in,be dead,·since+時間點He has stayed here 

13、since 5 o’clock.·since+ 時間段+ ago He has stayed here since 5 hours ago.·since+ 從句She has taught English since he came here.,Gra

14、mmar,since、for用法,1.since（自…以來）,2.for（自…以來）,·for+ 時間段He has kept the book for 2 weeks.,Mr. Brown has had his TV ______ 15 years. I’ve taken driving lessons _______last month. My sister has had her cell phone ____

15、__a month . My friends haven’t visited me ______my birthday. We haven’t used our car _____ a long time . She hasn’t had a good cup of coffee _____years. Tom has worn glasses _______he was 7 years old.,for,since,f

16、or,since,for,for,since,since、for用法,Grammar,Grammar,他的爺爺已經(jīng)去世2年了。 Nick 參軍3年了. 他離開深圳好長時間了。 這本書我已借了4個月了.,It is 2 years since his grandpa died.,It is 3 years since Nick joined the army.,It is a long time since he left

17、Shenzhen.,It is 4 months since I borrowed the book .,It is + 時間段 since + 一般過去時的句子.,Grammar,My father has gone to Shanghai for a meeting.他（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

18、 China . 她（曾經(jīng)）去過中國。（人已經(jīng)回來了）,,結(jié)論：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）,辨析 have been to和 have gone to,have been in

19、呆在某地方多久，常在for/since 中使用，表持續(xù)性I have been in Shunde since I was born,用have/has been to, have/has gone to填空：1.—Where is your brother? —He ____________ the shop. He’ll be back soon.2. — ______ you ever _________ Ameri

20、ca? —Yes, I ___________ New York twice.3. —Here you are at last! Where _____ you _____? —I _____________ London.4. —David _____________Australia. —I’m sure he’s already arrived.5. —Is Benny here? —No,