过去进行时1. 概念：过去某一时刻或某一段时间内正在进行的动作如：He was watching TV at six o’clock yesterday evening.They were working on the project last week.2. 构成：was/were + doing3. 用法：过去进行时通常和以下时间状语连用：at that time, ( at ) this time yesterday, then, when + 一般过去时的时间状语从句也用于while 从句中如：I was having dinner at that time.When you came in, I was writing. While I was studying, he fell asleep.4. when和while①when引导时间状语从句，表示“当……的时候”，从句的谓语动词可以时延续性动词，也可以是非延续性动词，可以是进行时态，也可以是非进行时态When his mother came in, he was doing homework.②while引导时间状语从句，表示“在……期间”，常指一段时间，不指具体时间点，从句的谓语动词必须是延续性动词，常用进行时态。
While he was doing homework, his mother came in.翻译：1. 当飞碟着陆的时候，凯特正在街上走2. 我们上课的时候下起雨来5. 过去进行时和一般过去时的区别过去进行时表示在过去某时刻或某段时间内发生的动作，强调动作正在进行；一般过去时表示过去发生的动作，强调动作发生了He was playing soccer this time yesterday.He played soccer yesterday.1. Linda told the policeman she _____ for the bus at ten o’clock yesterday morning.A. waited B. wait C. is waiting D. was waiting2. ---What were you doing this time yesterday?---I _____ on the grass and drawing a picture.A. sit B. sat C. am sitting D. was sitting3. What _____ you ______ when I called you？A. did, do B. was, doing C. were, doing D. are, doing 4. Ann was reading a book _____ I came in.A. when B. while C. because D. though5. Eddie was sleeping _____ Millie was reading a magazine.A. until B. while C. until D. so用所给单词的适当形式填空。
1. When I got home yesterday afternoon, it ______ (rain) hard.2. Tom ______ (write) his lessons when he heard a terrible noise outside.3. I ______ (read) a novel last night when the rainstorm came.4. ---Why did the policeman stop your car?---I ________ (make) a call at that moment. Bad luck!5. We were talking when the teacher _____ (come) in.。