【最新】八年級(jí)英語下冊(cè) Unit 2 Travelling grammar 2課件

1、Present perfect tensePresent perfect tense現(xiàn)在完成時(shí)態(tài) 8BUnit 2 Grammar 2用法用法1：現(xiàn)在完成時(shí)態(tài)的含義是表示過去現(xiàn)在完成時(shí)態(tài)的含義是表示過去發(fā)生的或已完成的動(dòng)作對(duì)現(xiàn)在造成的影發(fā)生的或已完成的動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。特點(diǎn)是既涉及過去，又聯(lián)系響或結(jié)果。特點(diǎn)是既涉及過去，又聯(lián)系現(xiàn)在：動(dòng)作是過去發(fā)生的，結(jié)果是現(xiàn)在現(xiàn)在：動(dòng)作是過去發(fā)生的，結(jié)果是現(xiàn)在存在的。存在的。 Look! The blackboard is so clean now. He has cleaned the blackboard. ( (他已經(jīng)擦過黑板了。他已經(jīng)擦過黑板

2、了。)這句話所表示的結(jié)果是黑板現(xiàn)在是干凈的。這句話所表示的結(jié)果是黑板現(xiàn)在是干凈的。用法用法2：表示動(dòng)作或狀態(tài)從過去：表示動(dòng)作或狀態(tài)從過去開始一直延續(xù)到現(xiàn)在甚至將來開始一直延續(xù)到現(xiàn)在甚至將來Mike borrowed the books two days ago.Mike has kept the books for two days.1.We have learnt English_ 3 years. _ 3 years ago._ we _(come)hereforsincecame_How long have you learnt English?5. for + 一段時(shí)間一段時(shí)間 sin

3、ce + 過去的時(shí)間點(diǎn)過去的時(shí)間點(diǎn) 就畫線提問用就畫線提問用how long想一想想一想since標(biāo)志詞：標(biāo)志詞：for +一段時(shí)間一段時(shí)間, since+過去的時(shí)間點(diǎn)過去的時(shí)間點(diǎn), these years, so far, in the past/last years We _ (learn) English for three years/ since two years ago/since 2000. Mr. Green _ (be) in China these years. They _(write) 15 songs so far. The population _ (grow)

4、more slowly in the past ten years.Have learnedhas beenhave writtenhas grown瞬間動(dòng)作不能于表示一段時(shí)間的短語連用，應(yīng)改用持續(xù)性動(dòng)詞。瞬間動(dòng)作不能于表示一段時(shí)間的短語連用，應(yīng)改用持續(xù)性動(dòng)詞。( )( )( )( )( )( )( )( )I have bought a new dictionary for a week. I have had a new dictionary for a week.我買一本新詞典已有一星期了。我買一本新詞典已有一星期了。They have come here for two days.Th

5、ey have been here for two days.他們來這兒已經(jīng)兩天了。他們來這兒已經(jīng)兩天了。He has joined the League member for two years.He has been a League member for two years.他已入團(tuán)兩年了。他已入團(tuán)兩年了。The man has been dead for several years.The man has died for several years.這個(gè)人已經(jīng)死了幾年了。這個(gè)人已經(jīng)死了幾年了。常見的非延續(xù)性動(dòng)詞與延續(xù)性動(dòng)詞的轉(zhuǎn)換。常見的非延續(xù)性動(dòng)詞與延續(xù)性動(dòng)詞的轉(zhuǎn)換。buy have

6、 go out be out leave be away begin/start be oncome/go be in/at borrow keepjoin be a member die be deadcatch a cold have a cold become befall asleep be asleep open be open get to know know close-be closedarrive-be in/at get married-be marriedStopbe over 1.I have borrowed the book for 2 weeks. ( )2.Th

7、e film has begun for 5 minutes.( )kept been on1. 這輛自行車我買了兩年了。這輛自行車我買了兩年了。 Ive _ the bike _ two years.2. He left Nanjing two years ago. He _ _ _ _ Nanjing for two years.3. The monkey died last month. The monkey _ _ _ for a month.4. A: Hong long _ you _ ( ) B: Two weeks. A.did,get ill B. have,fallen i

8、ll C. were,ill D. have,been illhad forhas been away fromhas been deadD1.She isnt here now because she _ the zoo. A.has been to B. have gone to C. has gone to2.The Greens _ Guilin twice. D.have gone to A.have been to B. have been in C. has been in3.Lily has made lots of friends since she _ here. A. c

9、ome B. has been C. came D. coming4.My parents _ in Beijing since 1995. A. are living B. have lived C. lived D. will live5.His grandma _ for 2 years. Was died B. has died C. was dead D. has been deadCACBDexercise1.-Have you _ the bike? -Yes ,I _ it 10 minutes ago.(mend)2.-I have _ the film “Titanic”.

10、 -When _ you _ it?(see) 3.Im sorry, I havent got any money.Ive_ (leave ) my handbag at home.4.I have _(read) the book.5.Its a long time since we _ (meet) last year.6.Look! The train _ just _. ( come)mendedmendedseendidseeleftreadmethascomeexercise現(xiàn)在完成時(shí)，強(qiáng)調(diào)這一動(dòng)作產(chǎn)生的結(jié)果對(duì)現(xiàn)現(xiàn)在完成時(shí)，強(qiáng)調(diào)這一動(dòng)作產(chǎn)生的結(jié)果對(duì)現(xiàn)在的影響，與現(xiàn)在有關(guān)。在的影響

11、，與現(xiàn)在有關(guān)。 一般過去時(shí)，僅僅表示在過去某一時(shí)刻曾發(fā)一般過去時(shí)，僅僅表示在過去某一時(shí)刻曾發(fā)生過這一動(dòng)作，與現(xiàn)在無關(guān)。生過這一動(dòng)作，與現(xiàn)在無關(guān)。 他已學(xué)英語五年了。他已學(xué)英語五年了。 He has studied English for five years. 他曾學(xué)過五年英語。他曾學(xué)過五年英語。 He studied English for five years. （說明他還繼續(xù)學(xué)下去）（說明他還繼續(xù)學(xué)下去） （只說明他過去學(xué)過五年英語，但現(xiàn)在不學(xué)了。）（只說明他過去學(xué)過五年英語，但現(xiàn)在不學(xué)了。） 一般過去時(shí)與現(xiàn)在完成時(shí)有一些明一般過去時(shí)與現(xiàn)在完成時(shí)有一些明顯的時(shí)間狀語。顯的時(shí)間狀語。 遇到遇到y(tǒng)esterday, Last year, in May, in+過過去某一年，去某一年，two days ago, the other day, just now等就用一般過去時(shí)等就用一般過去時(shí) 當(dāng)有當(dāng)有 so far, in the past/ last few days(在在過去過去/最近的幾年里最近的幾年里)，since接過去時(shí)間接過去時(shí)間狀語或過去時(shí)的句子狀語或過去時(shí)的句子等常用現(xiàn)