《現(xiàn)在完成時(shí)》PPT課件.pptVIP

Revision moduleA,Miss Xie,主語 + have/ has + 過去分詞（pp.）,現(xiàn)在完成時(shí)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 havent ( have not ） +過去分詞/ hasnt ( has not ) +過去分詞,疑問句 把助動(dòng)詞 have / has 放在句首,Grammar,現(xiàn)在完成時(shí)的結(jié)構(gòu),We have travelled around the world,We havent（have not） travelled around the world,Have we travelled around the world ？,Yes,I/We have. No, I/We havent(have not).,回答 肯定：Yes,主語+have/has 否定：No,主語+havent(have not)/hasnt(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 _ planted all the trees.,結(jié)論:主語若是第三人稱單數(shù)助動(dòng)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(shí)變化規(guī)則一樣）,(1)、一般動(dòng)詞，在詞尾直接加“ ed ”。 如：work-worked-worked visit-visited-visited (2)、以“ e ”結(jié)尾的動(dòng)詞，只在詞尾加“ d ”。 如：live-lived,過去分詞,Grammar,2、不規(guī)則變化,havehadhad spend spentspent makemademade saysaidsaid findfoundfound hearheardheard,Grammar,過去分詞,（2）過去分詞與過去式形式不一樣,taketooktaken speak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone,（1）過去分詞與不規(guī)則動(dòng)詞的過去式形式一樣,（3）過去分詞與過去式形式不一樣,taketooktaken speak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone,Grammar,（4）過去分詞，過去式與動(dòng)詞原形一樣,cutcutcut put putput letletlet readreadread,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(dòng)作。 Now we have planted all the trees. He has just come back. They have built many buildings in this city.,Grammar,現(xiàn)在完成時(shí)的用法,2.表示過去發(fā)生的動(dòng)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.,Grammar,現(xiàn)在完成時(shí)的用法,3.表示從過去開始并持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，常與包括現(xiàn)在在內(nèi)的一段時(shí)間的狀語連用。 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(shí)間短語或從句連用.,Grammar,現(xiàn)在完成時(shí)的用法,for+ 時(shí)間段 since+時(shí)間點(diǎn) , since+ 句子(一般過去時(shí)) 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(diǎn)1：并非所有for作為時(shí)間狀語的句子都用現(xiàn)在完成時(shí),Grammar,現(xiàn)在完成時(shí)的用法,注意點(diǎn)2: 瞬間動(dòng)詞不能和時(shí)間段連用.,Grammar,現(xiàn)在完成時(shí)的用法,動(dòng)作（短暫性動(dòng)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(shí)間點(diǎn) He has stayed here since 5 oclock. since+ 時(shí)間段+ ago He has stayed here since 5 hours ago. since+ 從句 She has taught English since he came here.,Grammar,since、for用法,1.since（自以來）,2.for（自以來）,for+ 時(shí)間段 He has kept the book for 2 weeks.,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 _my birthday. We havent used our car _ a long time . She hasnt had a good cup of coffee _years. Tom has worn glasses _he was 7 years old.,for,since,for,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(zhǎng)時(shí)間了。 這本書我已借了4個(gè)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 Shenzhen.,It is 4 months since I borrowed the book .,It is + 時(shí)間段 since + 一般過去時(shí)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 China . 她（曾經(jīng)）去過中國(guó)。（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 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. Hell be back soon. 2. _ you ever _ America? Yes, I _ New York twice. 3. Here you are at last! Where _ you _? I _ London. 4. David _Australia. Im