九年級(jí)英語 Unitgrammar focusPPT課件

1、Read these sentences and pay attention to the underlined parts.1. Before I got to the bus stop, the bus had already left.2. By the time I got back to school, the bell had rung.3. When I got to school, I realized that I had left my backpack at home.第1頁/共48頁過去完成時(shí)表示在過去某一時(shí)間或動(dòng)作之前已經(jīng)發(fā)生或完成了的動(dòng)作，即：過去的過去。過去完成時(shí)

2、態(tài)的概念： 第2頁/共48頁時(shí)間軸表示第3頁/共48頁 肯定式：had + 動(dòng)詞的過去分詞 否定式：hadnt + 動(dòng)詞的過去分詞 疑問式：Had + 動(dòng)詞的過去分詞? 簡略回答: Yes, 主 + had. No, 主 + had not.特殊疑問句：特殊疑問詞或詞組+一般疑問句 (Had+主語+過去分詞)?過去完成時(shí)態(tài)的構(gòu)成： 第4頁/共48頁1. 過去完成時(shí)表示一個(gè)動(dòng)作或狀態(tài)在過去某一時(shí)間或動(dòng)作之前已經(jīng)完成或結(jié)束，即發(fā)生在“過去的過去” 。如： When I woke up, it had stopped raining. 我醒來時(shí)，雨已經(jīng)停了。（主句的動(dòng)作發(fā)生在“過去的過去”） 過去完

3、成時(shí)的用法：By the time they arrived, the bus had left. 當(dāng)他們到的時(shí)候，公交車已經(jīng)開走了。第5頁/共48頁2. 過去完成時(shí)是一個(gè)相對(duì)的時(shí)態(tài)，表示的是“過去的過去”，表示 從過去某一時(shí)間開始一直延續(xù)到過去另一時(shí)間的動(dòng)作或狀態(tài)。只有和過去某一時(shí)間或某一動(dòng)作相比較時(shí)才使用它。如： He told me that he had written a new book. (had written 發(fā)生在 told 之前 ) 第6頁/共48頁3. 過去完成時(shí)需要與一個(gè)表示過去的時(shí)間狀語連用，它不能離開過去時(shí)間而獨(dú)立存在。此時(shí)多與already， yet， stil

4、l， just， before， never等時(shí)間副詞及 by， before， until等引導(dǎo)的短語或從句連用。如：Before she came to China, Grace had taught English in a middle school for about five years. Peter had collected more than 300 Chinese stamps by the time he was ten. 第7頁/共48頁4. 過去完成時(shí)可表示某一動(dòng)作或狀態(tài)在過去某時(shí)之前已經(jīng)開始，一直延續(xù)到這一過去時(shí)間，而且動(dòng)作尚未結(jié)束，仍然有繼續(xù)下去的可能。如： By

5、 the end of last year, he had worked in the factory for twenty years. （ had worked 已有了 20 年，還有繼續(xù)進(jìn)行下去的可能）第8頁/共48頁 6:00 7:00 現(xiàn)在 By the time I got up, my sister had already washed all the clothes.第9頁/共48頁I got homenow9:00pm8:00pmMy little brother went to bedBy the time I got home, my little brother had

6、 gone to bed.第10頁/共48頁 I got to schoolnow8:158:00amThe teacher came into the classroomBy the time I got to school, the teacher had come into the classroom.第11頁/共48頁By the time she got outside, the bus had already left.第12頁/共48頁1. He _ in Shanghai University for four years before he _ to Beijing. A.

7、studied, had gone B. had studied, went C. has studied, goes D. had studied, had gone例題解析解析：“他去北京之前在上海大學(xué)學(xué)習(xí)了4年 ”。在上海大學(xué)學(xué)習(xí)的動(dòng)作發(fā)生在去北京之前，因此第一個(gè)空應(yīng)用過去完成時(shí)。此題選B。B第13頁/共48頁2. Mary said it was at least five years since she _ a good drink.A. enjoyed B. was enjoying C. had enjoyed D. would enjoy解析：“It was + 時(shí)間段+sin

8、ce 引導(dǎo)的從句”中用過去完成時(shí)。應(yīng)選C。C第14頁/共48頁3. Xiao Pei said she _ Hainan for 3 months.A. has been in B. had been in C. had been to D. had gone to解析：“小培說她在海南三個(gè)月了 ”。have been to 和have gone to 都是短暫性的動(dòng)詞短語，表示狀態(tài)的應(yīng)該用have been in， 故應(yīng)選B。B第15頁/共48頁過去完成時(shí)是一個(gè)相對(duì)的時(shí)態(tài)，它所表示的動(dòng)作不僅發(fā)生在過去，更強(qiáng)調(diào)“過去的過去”，只有和過去某時(shí)或某動(dòng)作相比較時(shí)，才用到它； 現(xiàn)在完成時(shí)表示的動(dòng)作發(fā)生

9、在過去，但側(cè)重對(duì)現(xiàn)在產(chǎn)生的結(jié)果或造成的影響，與現(xiàn)在有關(guān)，其結(jié)構(gòu)為“ have (has) + 過去分詞”。過去完成時(shí)與現(xiàn)在完成時(shí)的區(qū)別 第16頁/共48頁I have learned 1,000 English words so far. 到目前為止我已經(jīng)學(xué)會(huì)了到目前為止我已經(jīng)學(xué)會(huì)了 1000 個(gè)英語單個(gè)英語單詞。詞。 I had learned 1,000 English words till then. 到那時(shí)為止我已經(jīng)學(xué)會(huì)了到那時(shí)為止我已經(jīng)學(xué)會(huì)了 1000 個(gè)英語單個(gè)英語單詞。詞。第17頁/共48頁時(shí)間軸表示：第18頁/共48頁雖然這兩種時(shí)態(tài)都表示過去發(fā)生的動(dòng)作或存在的狀態(tài)，但在使用時(shí)應(yīng)

10、注意以下幾點(diǎn)： 1.1.時(shí)間狀語不同：過去完成時(shí)在時(shí)間上強(qiáng)調(diào)“過去的過去”；而一般過去時(shí)只強(qiáng)調(diào)過去某一特定的時(shí)間。過去完成時(shí)與一般過去時(shí)的區(qū)別 試比較： They had arrived at the station by ten yesterday. They arrived at the station at ten yesterday. 第19頁/共48頁2. 在沒有明確的過去時(shí)間狀語作標(biāo)志時(shí)，謂語動(dòng)詞動(dòng)作發(fā)生的時(shí)間先后須依據(jù)上下文來判斷：先發(fā)生的用過去完成時(shí)，后發(fā)生的則用一般過去時(shí)。如： She was very happy. Her whole family were pleased

11、 with her, too. She had just won the first in the composition competition. 第20頁/共48頁3. 當(dāng)兩個(gè)或兩個(gè)以上接連發(fā)生的動(dòng)作用 and 或 but 連接時(shí)，按時(shí)間順序，只需用一般過去時(shí)來代替過去完成時(shí)；另外，在 before, after, as soon as引導(dǎo)的從句中，由于這些連詞本身已經(jīng)表示出時(shí)間的先后，因此也可以用過去時(shí)來代替過去完成時(shí)。如： He entered the room, turned on the light and read an evening paper. I (had) called

12、 her before I left the office.第21頁/共48頁Fill in the blanks with the correct form of the words.1. Paul _ (go) out with Jane after he _ (make) a phone call.2. Tom _ (say) he _ (read) the book twice.3. When I _ (arrive) at the station, he _(leave).wenthad madesaidhad readarrivedhad left第22頁/共48頁4. She _

13、 (not go) to Qingdao because she _ (be) there before.5. By ten yesterday evening, she _ (finish) writing.didnt go had beenhad finished第23頁/共48頁1. We _ out by that time that he_ a thief for a longtime.A. had found, had been B. had found, wasC. found, had been D. found, was2. It so happened that they

14、_ the novel before.A. had read B. would read C. were reading D. readCAChoose the best answer.第24頁/共48頁3. Han Mei told me she _lunch, so she was very hungry. A. has had B. hasnt have C. have had D. hadnt had4. The meeting _ when Mr. Wang _ to school. A. has begun; get B. has been on; get C. had begun

15、; got D. had been on; gotDC第25頁/共48頁 按要求改寫句子。 1.I had sold the ticket when she came.（改為否定句） _2. By the time he got to the airport, the plane had taken off. (改為一般疑問句) _ _?3. Jack didnt go to the cinema because he had seen the film.（對(duì)劃線部分提問）_I had not sold the ticket when she came.Had the plane taken

16、off by the time he got to the airport Why didnt Jack go to the cinema? 第26頁/共48頁4. Lucy had already finished her homework when I arrived.（改為一般疑問句） _ _5. We cooked the dumplings. We ate them up. （用過去完成時(shí)連接兩句） _ _ Had Lucy already finished the project when I arrived?After we had cooked the dumplings, w

17、e ate them up.第27頁/共48頁4a4a Make sentences using by the time or before. 2. The coffee became cold. I put cream in the coffee.3. The teacher collected the math homework. I got to school.Before I put cream in the coffee, the coffee had become cold. By the time I got to school, the teacher had collecte

18、d the math homework.第28頁/共48頁4.I completed the work for my boss. The workday ended. 5.The movie started. I arrived at the cinema. Before the workday ended, I had completed the work for my boss. By the time I arrived at the cinema, the movie had started. 第29頁/共48頁6.My mother finished making the apple

19、 pie. I got home from my language course. By the time I got home from my language course, my mother had finished making the apple pie.第30頁/共48頁把下面的句子翻譯成漢語。1.Before I put cream in the coffee, the coffee had become cold.2. By the time I got to school, the teacher had collected the math homework.3. Bef

20、ore the workday ended, I had completed the work for my boss.我把牛奶放進(jìn)咖啡之前，咖啡就已經(jīng)變涼了。當(dāng)我到學(xué)校的時(shí)候，老師已經(jīng)收完數(shù)學(xué)作業(yè)了。工作日結(jié)束之前，我就已經(jīng)完成老板布置的任務(wù)了。第31頁/共48頁4. By the time I arrived at the cinema, the movie had started. 5. By the time I got home from my language course, my mother had finished making the apple pie.當(dāng)我到達(dá)電影院的時(shí)

21、候，電影已經(jīng)開始了。我學(xué)完語言課回到家時(shí)，我媽已經(jīng)做好了蘋果派。 第32頁/共48頁1. 我到家時(shí)她已經(jīng)睡了。By the time I got home, she had already gone to bed.2. 到晚上時(shí)消息已傳遍全球。By the evening the news had spread through the world.把下面的句子翻譯成英語。第33頁/共48頁3. 他走以后我找到了那封信。I found the letter after he had gone away.We reached the cinema late. The film had alread

22、y begun.4. 我們到電影院晚了我們到電影院晚了, ,電影已經(jīng)開始了。電影已經(jīng)開始了。第34頁/共48頁We found that somebody had broken our window.I soon realized that I had made a serious mistake.6. 不久我意識(shí)到自己犯了一個(gè)嚴(yán)重的錯(cuò)誤。5. 我們發(fā)現(xiàn)有人把我們的窗戶打破了。第35頁/共48頁I didnt go because I had already seen the film.After he checked out all the information, he believed

23、his daughter had made a good decision.8. 他查看了所有的信息后，相信女兒的選擇他查看了所有的信息后，相信女兒的選擇是對(duì)的。是對(duì)的。7. 我沒有去，因?yàn)槲乙芽催^這部電影。第36頁/共48頁4b4b Fill in the blanks with the correct forms of the words in the box.1. By the time I arrived at the party, everyone else _ already _. had2. When he put the noodles into a bowl, he real

24、ized he _ to add the green beans.3. By the time my mother came back from the market, I _ already _ the door to go for my piano lesson.had forgottenshown up rush out forget arrive at go into show up find out had rushed out第37頁/共48頁4. Before she got to the airport, she _ the earthquake.5. When she _ t

25、he movie theater, she remembered she forgot to feed her dog. 6. Before she got a chance to say goodbye, he _ the building. found outarrived athad gone into第38頁/共48頁4c4c Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement.1

26、.By the time I left school in the morning, _ _ _I had already had breakfast.I had already taken a shower.I had already washed my face.第39頁/共48頁2. By the end of the school day, _3. By dinner time, I _I have got a present from Tom.I had had finished the test.I had finished my homework.had had too many

27、 apples.had eaten plenty of meat.have finished all the housework .第40頁/共48頁Make conversations with your partner to talk about the things you did yesterday by using the past perfect tenses. 第41頁/共48頁When you called me, I get to the bus stop第42頁/共48頁When I got to the library, close第43頁/共48頁When I got to the cinema, leave the wall