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: ,过去进行时 1. 定义： 表示过去某一具体时间正在发生的动作。 2. 时间标志： 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. 过去进行时还可以和when, while, as引导的过去时间状语从句连用，形成复合句。,e.g. While the lights were changing to red, a car suddenly appeared round the corner. 正当交通信号灯要变成红灯的时候，一辆小轿车突然从拐角处驶出来。,One day
5、, when Henry was working in a restaurant, a snake suddenly appeared. 一天，当亨利正在餐馆里工作时，一条蛇突然钻了出来。 I was trying to pick it up when it bit me again. 我正试图捡起（那条蛇），突然它又咬了我一口。 As the doctors were checking him, the pain got worse. 医生给他做检查时，疼痛加剧了。,when，while，as都可以引导时间状语从句，但用法区别非常大。,一、when可以和延续性动词连用，也可以和短暂性动词连用
6、；而while和as只能和延续性动词连用。 e.g. They arrived while we were having dinner. = They arrived when we were having dinner. 我们吃饭的时候他们到了。,二、由when引导的时间状语从句，如果主句是过去进行时，从句应该用一般过去时，表示一个动作正在进行的时候另一个动作突然发生了，强调后一动作发生的突然性。 e.g. We were talking when the teacher came in. 我们正在讲话，老师（突然）进 来了。,三、当主句和从句的动作都是延续的或同时发生的，两句都用过去进行时
7、的时候，多用while引导。 e.g. They were singing while were dancing. 他们在唱歌，我们在跳舞。,重点短语： in time fall off pay attention side by side 语法： 过去进行时,本课小结：,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,练一练,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. fell up,A,B,A,6. Everyone should pay attention _ the risk of the accident. A. for B. to C. at D. under,B,编写一个对话,介绍你亲眼目睹的一次交通事故。,Homework,
