1、Module 8 Accidents,Unit 1 While the lights were changing to red, a car suddenly appeared.,1. While the lights were changing to red, a car suddenly appeared round the corner. 2. When I was waiting to cross the road, the accident happened.,Listen and mark when the speaker pauses.,/,/,Now listen again

2、and repeat.,1. While the lights were changing to red, a car suddenly appeared round the corner. 2. When I was waiting to cross the road, the accident happened.,/,/,Work in groups of four.,Student A: Youre a policeman at an accident scene in the street. Ask people questions. Student B, C and D: You s

3、aw the accident. Answer the policemans questions.,A: What were you doing when the accident happened? B: When the accident happened, I was walking along the street. C: When the accident happened, D: ,過去進行時 1. 定義： 表示過去某一具體時間正在發(fā)生的動作。 2. 時間標志： at yesterday morning at that time from nine to ten last even

4、ing when, while, as,Grammer,e.g. We were watching TV from six to nine last night. What was he researching all day last Sunday?,3. 過去進行時還可以和when, while, as引導的過去時間狀語從句連用，形成復合句。,e.g. While the lights were changing to red, a car suddenly appeared round the corner. 正當交通信號燈要變成紅燈的時候，一輛小轎車突然從拐角處駛出來。,One day

5、, when Henry was working in a restaurant, a snake suddenly appeared. 一天，當亨利正在餐館里工作時，一條蛇突然鉆了出來。 I was trying to pick it up when it bit me again. 我正試圖撿起（那條蛇），突然它又咬了我一口。 As the doctors were checking him, the pain got worse. 醫(yī)生給他做檢查時，疼痛加劇了。,when，while，as都可以引導時間狀語從句，但用法區(qū)別非常大。,一、when可以和延續(xù)性動詞連用，也可以和短暫性動詞連用

6、；而while和as只能和延續(xù)性動詞連用。 e.g. They arrived while we were having dinner. = They arrived when we were having dinner. 我們吃飯的時候他們到了。,二、由when引導的時間狀語從句，如果主句是過去進行時，從句應該用一般過去時，表示一個動作正在進行的時候另一個動作突然發(fā)生了，強調后一動作發(fā)生的突然性。 e.g. We were talking when the teacher came in. 我們正在講話，老師（突然）進 來了。,三、當主句和從句的動作都是延續(xù)的或同時發(fā)生的，兩句都用過去進行時

7、的時候，多用while引導。 e.g. They were singing while were dancing. 他們在唱歌，我們在跳舞。,重點短語： in time fall off pay attention side by side 語法： 過去進行時,本課小結：,1. Safety comes first. We should _ to keep safe on the road. obey the traffic (交通) rules be careful of passing cars and buses run fast after others not read the me

8、ssages on our mobile phones play basketball with our friends A. B. C. ,A,練一練,2. I _ a meal when you _ me. A. cooked, were ringing B. was cooking, were ringing C. was cooking, rang D. cooked, rang,C,3. They _ a football game from 7 to 9 last night. A. were watching B. watch C. watched D. are watching 4. Would the driver see him _? A. on time B. in time C. for time 5. The old man _ the ladder yesterday afternoon. A. fell off B. fell down C. fell of D. fel