过去进行时讲解

when,while引导的时间状语从句
1.when引导的状语从句表示时间，说明一个动作发生时，另一动作正在进行。

What was the girl doing when the UFO took off?当飞碟起飞时，那个女孩在做什么？
He was sleeping when it arrived.当它到来时他正在睡觉。

2.while引导的从句一般用进行时，表示某个动作正在进行时，发生了另一个动作，这时主句用一般过去时。

While we were swimming, someone stole our clothes.我们在游泳时，有人偷了我们的衣服。

He was listening to music while he was doing his homework.他边做家庭作业边听音乐。

过去进行时
一、概念及构成
过去进行时表示过去某一时刻正在进行的动作，或表示过去某一阶段一直在进行的动作。

过去进行时由“was/were+现在分词”构成。

常见的时间状语有this morning, the whole morning, at this time yesterday, when, while, all day yesterday
I was having a talk with Li Hua at that time.那时，我正在跟李华谈话。

I was watching TV at home last night.昨晚我一直在家看电视。

二、用法
1.过去进行时表示过去某段时间内持续进行的动作或者事情。

My brother fell while he was riding his bicycle and hurt himself.我哥哥骑自行车的时候从车上摔下来，受伤了。

It was raining when they left the station.他们离开车站的时候天正在下雨。

2.过去进行时可以表示在过去的某个时间点发生的事情，时间点可以用介词短语，副词或从句来表示。

What was she doing at nine o’clock yesterday?昨天晚上九点钟她在做什么？
When I saw him he was decorating his room.当我看见他的时候他正在装饰他的房间。

3.在复合句中，如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词都可用过去进行时。

While he was waiting for the bus, he was reading a newspaper.他边等公共汽车边看报纸。

He was cleaning his car while I was cooking.他擦车是我在做饭。

1. The reporter said that the UFO ______ east to west when he saw it.
A. was traveling
B. traveled
C. had been traveling
D. was to travel
分析：答案为A。

过去进行时表示报告人当时所看到的情景。

2.—What were you doing when Tony phoned you?
—I had just finished my work and to take a shower.
A. had started
B. started
C. have started
D. was starting
分析：答案为D。

过去进行时表示过去将要发生的事。

句意是：(Tony给我打电话时)我刚好做完工作，准备去冲凉。

3.—Has Sam finished his homework today?
—I have no idea. He ______it this morning.
A. did
B. has done
C. was doing
D. had done
分析：答案为C。

由上文可知，下文的大意是：“我不知道Sam现在是否已经做完了作业，(但是我知道)他今天早上在做作业”，所以用过去进行时态。

4.—You were out when I dropped in at your house.
—Oh, I ______for a friend from England at the airport.
A. was waiting
B. had waited
C. am waiting
D. has waited
分析：答案为A。

句意是：(你来我家时) 我正在机场等候一位从England来的朋友。

表示在过去某一时刻或在过去某一段时间内正在发生的事，用过去进行时，所以选A。

5.— Where did you put the car keys?
— Oh, I ______ I put them on the chair because the phone rang as I ______ in.
A. remembered; come
B. remembered; was coming
C. remember; come
D. remember; was coming
分析：答案为D。

第一空用一般现在时，指的是“现在”还记得; 第二空用过去进行时，指的是当时正在做的事。

6. I ______ along the street looking for a place to park when the accident ______.
A. went; was occurring
B. went; occurred
C. was going; occurred
D. was going; had occurred
分析：答案为C。

第一空用过去进行时，表示过去正在发生的情况; 第二空用一般过去时，表示过去突然发生的一件事。

7.—I saw Jane and her boyfriend in the park at eight yesterday evening.
—Impossible. She ______ TV with me in my home then.()
A. watched
B. had watched
C. would watch
D. was watching
分析：答案为D。

表示过去正在进行的动作，用过去进行时。

第二句的意思是：不可能。

她当时与我一起在我家看电视。

8.—Is there anything wrong, Bob? You look sad.
—Oh, nothing much. In fact, I ______ of my friends back home.
A. have just thought
B. was just thinking
C. would just think
D. will just be thinking
分析：答案为B。

指刚刚在想念老家的朋友，故用过去进行时。

9.—Did you watch the basketball match yesterday?
—Yes, I did. You know, my brother ______ in the match.
A. is playing
B. was playing
C. has played
D. had played
分析：答案为B。

此处用过去进行时表示当时正在进行的情况。