現(xiàn)在完成時講解課件

1、現(xiàn)在完成時present(now)futurepast 現(xiàn)在完成時現(xiàn)在完成時( present perfect tense)do my homework 現(xiàn)在完成時的構(gòu)成現(xiàn)在完成時的構(gòu)成主菜單上一頁下一頁have (hashave (has）+ + 過去分詞過去分詞Mother: John, clean your teeth please.John: Mum, I them.現(xiàn)在完成時的基本句型：現(xiàn)在完成時的基本句型：肯定式：肯定式：主語 + 助動詞have/has + 動詞的過去分詞. 疑問式：疑問式：助動詞Have/Has + 主語 + 動詞的過去分詞?否定式否定式: 主語 + 助動詞ha

2、ve/has + not + 動詞的過去分詞. 例句：例句：6. Has he gone to the library ? 他是去了圖書館嗎？Yes ,he has. 是的，是去那里了。No, he hasnt. 不，他沒去那里。7. How long has Mrs Smith been in Beijing？Smith夫人來北京多長時間了？ 現(xiàn)在完成時的主要用法現(xiàn)在完成時的主要用法上一頁下一頁- Its so dark.- Its so dark.-Someone has turned off the light.-Someone has turned off the light.(有人剛

3、把燈關(guān)了有人剛把燈關(guān)了,對現(xiàn)在造成的結(jié)果是對現(xiàn)在造成的結(jié)果是:現(xiàn)在很黑現(xiàn)在很黑)- Are you free?-I have finished my homework. I am free-I have finished my homework. I am free( (我已我已經(jīng)經(jīng)完成了家庭作完成了家庭作業(yè)業(yè),對現(xiàn)在造成的結(jié)果是很有空對現(xiàn)在造成的結(jié)果是很有空)主菜單1. 1.表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或結(jié)果。表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或結(jié)果。 上一頁下一頁I have learnt English for more than I have learnt English

4、 for more than ten years. ten years.我已經(jīng)學(xué)了我已經(jīng)學(xué)了10多年的英語。多年的英語。(從從10年前開始年前開始,持續(xù)到現(xiàn)在還在學(xué)持續(xù)到現(xiàn)在還在學(xué))She has swum since half an hour ago.我已經(jīng)游泳了半個小時我已經(jīng)游泳了半個小時(半個小時前已經(jīng)開始游泳半個小時前已經(jīng)開始游泳,到現(xiàn)在還在游到現(xiàn)在還在游)現(xiàn)在完成時的主要用法現(xiàn)在完成時的主要用法主菜單2.2.表示表示過去過去已經(jīng)開始已經(jīng)開始, , 持續(xù)到持續(xù)到現(xiàn)在的動作或狀現(xiàn)在的動作或狀態(tài)態(tài). .常與常與since + since + 過去的時間點(diǎn)，過去的時間點(diǎn)，for + for

5、+ 一段時一段時間，間，so far so far 等時間狀語連用。等時間狀語連用。3.3.表示人曾有過或到目前為止從表示人曾有過或到目前為止從未有過的未有過的經(jīng)歷經(jīng)歷. .上一頁下一頁I haveI have ever ever beenbeen to the Summer Palace? to the Summer Palace?(我曾去過頤和園我曾去過頤和園) I I havehave never never had had a car.a car. (我從未有過汽車。我從未有過汽車。)主菜單1. 1.表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或結(jié)果。表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或

6、結(jié)果。 2.2.表示表示過去過去已經(jīng)開始已經(jīng)開始, , 持續(xù)到持續(xù)到現(xiàn)在的動作或狀態(tài)現(xiàn)在的動作或狀態(tài), ,3.3.表示人曾有過或到目前為止從未有過的表示人曾有過或到目前為止從未有過的經(jīng)歷經(jīng)歷現(xiàn)在完成時的運(yùn)用現(xiàn)在完成時的運(yùn)用(1):1在表示“用法1”時，現(xiàn)在完成時常和副詞already, yet, never, ever ,before ,just等連用。a）already 往往用于肯定句，用在疑問句時表示強(qiáng)往往用于肯定句，用在疑問句時表示強(qiáng) 調(diào)或加強(qiáng)語氣；調(diào)或加強(qiáng)語氣；yet 用于否定句和疑問句。用于否定句和疑問句。 He has already left here. 他已經(jīng)離開這里了。 Ha

7、s he already left here? 他（真的）已經(jīng)離開這里了嗎？（表示加強(qiáng)語氣） My teachers havent had breakfast yet. 我的老師們還沒有吃早飯。 Have you written to your parents yet? 你已經(jīng)給你父母寫過信了嗎？yet在現(xiàn)在完成時中的用法在現(xiàn)在完成時中的用法 否定句否定句:句末句末 “還還(沒沒)”疑問句疑問句: 句末句末 “己經(jīng)己經(jīng)” Eg. I havent had breakfast yet. Have you had breakfast yet?b） never 是否定詞，表示是否定詞，表示“從來沒有

8、從來沒有”，而，而ever 表表示示“曾經(jīng)曾經(jīng)” We have never been to the Great Wall. 我們從來沒有去過長城。 Have you ever been to Canada? 你們曾經(jīng)去過加拿大嗎？ c） just表示表示“剛剛剛剛”（用于完成時態(tài)時，與（用于完成時態(tài)時，與already，never 等副詞的位置一樣，多用在助動詞等副詞的位置一樣，多用在助動詞have/has和和動詞過去分詞之間）動詞過去分詞之間） He has just come back. 他剛剛回來。 They have just finished the work. 他們剛剛完成那項(xiàng)工

9、作?，F(xiàn)在完成時的現(xiàn)在完成時的時間狀語時間狀語常與常與already, already, never, never, ever, ever, just, just, yet, yet, before, before, up to now, up to now, so far, so far, for the last few weeksfor the last few weeks these days, these days, since since for a long timefor a long time 連用連用上一頁下一頁主菜單1.for +Eg. I have been here f

10、or 5 weeks. Hes studied English for 3 years.一段時間一段時間2. since +從句(一般過去時) 單詞 詞組 (表示過去某一時間的)時間點(diǎn)時間點(diǎn)Eg. I have been here since 2000. I have been here since 5 years ago. I have been here since I graduated in 2000.since: (自自以來以來)1)since+時間點(diǎn)時間點(diǎn)He has stayed here since 5 oclock.2)since+ 時間段時間段+ agoHe has sta

11、yed here since 5 hours ago.3)since+ 從句從句She has taught English since he came here. for: (長達(dá)）長達(dá)）for+ 時間段時間段He has kept the book for 2 weeks.since , for 的用法的用法: 注1): since 也可單獨(dú)使用, 表示“自那時起”; 另外since前也可加上ever,以加強(qiáng)語氣.Eg. I have been here (ever) since I graduated in 2000.注2): 對for或since引導(dǎo)的時間狀語提問 必須用how lon

12、g, 決不能用when.Eg. *I have lived here for 10 years.How long have you lived here?*She has stood here since 2 hour ago.How long has she stood here?短暫性動詞與延續(xù)動詞間的轉(zhuǎn)換leavcome/go (to) arrive (at/in) get (to)reachbuyborrowfinish be away (from) be (in/at) be (in/at) be (in/at)be (in/at)havekeepbe overjoinstart/b

13、egindiecloseopenreturnmarrybecomebe in/be a/anbe onbe deadbe closedbe openbe backbe married be短暫性短暫性動詞與時間段的關(guān)系動詞與時間段的關(guān)系 短暫性動詞在肯定句、疑問句中短暫性動詞在肯定句、疑問句中不能與時不能與時間段連用間段連用，這些動詞是：，這些動詞是：等。等。上一頁下一頁為了表述這種意思為了表述這種意思, ,我們常用相應(yīng)的我們常用相應(yīng)的來代替短暫性動詞。來代替短暫性動詞。主菜單 但在否定句中，短暫性動詞可以與但在否定句中，短暫性動詞可以與時間段連用。時間段連用。如：如：I havent bou

14、ght the bike for a year. I havent bought the bike for a year. 我買這輛自行車還不到一年。我買這輛自行車還不到一年。She hasnt come here for an hour. She hasnt come here for an hour. 她來這兒還沒有一個小時。她來這兒還沒有一個小時。上一頁下一頁主菜單 翻翻 譯譯 練練 習(xí)：習(xí)： 1. 1.我買了這塊手表五年了。我買了這塊手表五年了。 2. 2.這位老人已經(jīng)死了十年了。這位老人已經(jīng)死了十年了。 3. 3.他已經(jīng)回來三天了。他已經(jīng)回來三天了。 4. 4.自從六點(diǎn)鐘他就來這兒了

15、。自從六點(diǎn)鐘他就來這兒了。 5. 5.我離開家鄉(xiāng)已十年了。我離開家鄉(xiāng)已十年了。WW下一頁上一頁主菜單have been 與have gone 的用法比較 1.have been to 意思是意思是“到過，去過到過，去過”表示表示曾經(jīng)到過某處曾經(jīng)到過某處，但現(xiàn)在人不在那兒。，但現(xiàn)在人不在那兒。 Eg.Has she ever been to Nanjing?Has she ever been to Nanjing?2.have gone to 意思是意思是“去了去了”，表示，表示已經(jīng)已經(jīng)去了去了某地，現(xiàn)在人可能在去的途中或已在那某地，現(xiàn)在人可能在去的途中或已在那兒了。兒了。Eg.You have

16、 been in Beijing for 2 years.Eg.You have been in Beijing for 2 years.3.have been in 意思是意思是“呆在某處一段時間呆在某處一段時間了了 Eg.She has gone to Nanjing. Eg.She has gone to Nanjing. 與一般過去時的用法比較一一. .現(xiàn)在完成時和一般過去時都是說過現(xiàn)在完成時和一般過去時都是說過去的事情，去的事情，; ;而一而一般過去時，則只般過去時，則只講述講述發(fā)生在過去的發(fā)生在過去的動作和事情動作和事情與現(xiàn)在沒有關(guān)系與現(xiàn)在沒有關(guān)系。 上一頁下一頁主菜單eg：He

17、has bought an English-Chinese dictionary. 他已經(jīng)買了一本英漢字典。他已經(jīng)買了一本英漢字典。 He bought an English-Chinese dictionary. 他曾買過一本英漢字典。他曾買過一本英漢字典。上一頁下一頁第一句用現(xiàn)在完成時時態(tài)，想表達(dá)意為：第一句用現(xiàn)在完成時時態(tài)，想表達(dá)意為：“He He bought an English-Chinese dictionary. And bought an English-Chinese dictionary. And he still has it” “he still has it” “過

18、去他買了一本英漢字典，過去他買了一本英漢字典，現(xiàn)在他還有這本字典現(xiàn)在他還有這本字典” ” 。第二句用過去時只敘述過去他買過一本英漢字第二句用過去時只敘述過去他買過一本英漢字典這一事實(shí)，至于現(xiàn)在他是否有這本字典并未強(qiáng)典這一事實(shí)，至于現(xiàn)在他是否有這本字典并未強(qiáng) 調(diào)說明。調(diào)說明。主菜單二當(dāng)有一個表示二當(dāng)有一個表示過去某一特定時間過去某一特定時間的狀語時，不用現(xiàn)在完成時，而用的狀語時，不用現(xiàn)在完成時，而用一般過去時一般過去時: : 上一頁下一頁eg: I saw the film on television yesterday . 但但since(since(自自以來以來)+)+某一過去時間或敘某一過

19、去時間或敘述過去事情的從句總是與現(xiàn)在完成時述過去事情的從句總是與現(xiàn)在完成時連用。連用。eg： They have known each other since 1950 . Since he was a child ,he has lived in England.主菜單三常與一般過去時連用的典型的三常與一般過去時連用的典型的 表示過去時間的狀語表示過去時間的狀語: :上一頁下一頁yesterday(yesterday(昨天昨天), the day before yesterday(), the day before yesterday(前天前天), ),just now(just now(剛

20、才剛才) )， 時間時間+ ago, + ago, last +last +時間時間 等等; ; eg: The plane took off ten minutes ago. We finished our task last week .主菜單It is +一段時間一段時間 +since+句子句子(一般過去時一般過去時)=一段時間一段時間+has passed +since + 句子句子(過去過去) Eg. It is five years since I joined the army.=Five years has passed since I joined the army.動動 詞

21、詞 填填 空：空： 1._ you _(clean) the room?1._ you _(clean) the room? Yes, we _(do) that Yes, we _(do) that already.already. When _ you _(do) it? When _ you _(do) it? We _(do) it We _(do) it an hour ago.an hour ago.2._ he _(see) this film 2._ he _(see) this film yet?yet? Yes. Yes. When _ he _(see) it? When

22、 _ he _(see) it? He _ it He _ it last week. last week. 3. How many times _you_(be) there? 3. How many times _you_(be) there? 下一頁上一頁主菜單4. I _ (read) the novel twice. Its interesting.4. I _ (read) the novel twice. Its interesting.5. She _(go) to Pairs, hasnt she? Yes.5. She _(go) to Pairs, hasnt she?

23、Yes. How _ she _(go) there? How _ she _(go) there? She _(go) there by air. She _(go) there by air.6. 6. So farSo far, many countries _(develop) , many countries _(develop) their software programs. their software programs.7.Mr Chen _(give)up smoking 7.Mr Chen _(give)up smoking last year.last year.8.M

24、r Chen _(give) up smoking 8.Mr Chen _(give) up smoking since last year.since last year.下一頁上一頁主菜單選用選用 forfor和和 sincesince填空填空: :1.We havent seen each other _ a long time.1.We havent seen each other _ a long time.2.His father has been in the Party _ 10 years 2.His father has been in the Party _ 10 yea

25、rs ago.ago.3.The film has been on _ 20 minutes.3.The film has been on _ 20 minutes.4.Mr Green has worked here _ he came to 4.Mr Green has worked here _ he came to China.China.5.His grandparents have been dead _ several 5.His grandparents have been dead _ several years.years.6. Its five years _ we me

26、t last time.6. Its five years _ we met last time.下一頁上一頁主菜單用用Have been to, have gone to, have been in 填空填空1.1.Mike and his parents _ the north Mike and his parents _ the north for half a year.for half a year.2.2.Mum is not at home now. she _ the Mum is not at home now. she _ the shop.shop.3.3._ you e

27、ver _ to kunming ? Never._ you ever _ to kunming ? Never.4.4.Where _ you _ these days?Where _ you _ these days?5.5.Has Jim arrived yet?Has Jim arrived yet? Yes, he _ here for several days. Yes, he _ here for several days.6.6.Where is Peter? I dont know where he Where is Peter? I dont know where he _

28、._.7.7.Hi Jim! Where _ you _ ? Li Lei Hi Jim! Where _ you _ ? Li Lei is looking for you. is looking for you.下一頁上一頁主菜單改改 錯錯1. How long have you begun to study English?2. I have borrowed this book for two weeks.3. The river has become very dirty since last August.4. Our manager is away today. He has been to Guangzhou on business.5. He has gone out for two years.下一頁上一頁主菜單1. The house is dirty. We _it for weeks. A didnt clean B hadnt cleaned C dont clean D havent cleaned2. - I