过去进行时
1.构成：was/were +doing
2.含义：
A) 表示在过去一个比较具体的时间正在发生的动作。除了上下文的暗示，一般用时间状语来表示。
I was doing my homework at this time yesterday.昨天这个时候我在写作业。
-What were you doing at eight last night? 昨晚八点你在干什么？
-I was taking a shower.我当时在洗澡。
B) 如果when, while(两个词表示“当„„的时候”)这样的时间状语引导词所引导的句子常用过去进行时。
I was washing my hair when you knocked at the door.当你在敲门的时候，我正在洗头发。 -What was he doing when the rainstorm came?暴风雨来的时候他在干什么？
-He was reading in the library.他当时在图书馆读书。
I was drawing while my brother came in. 我弟弟进来的时候，我正在画画。
④The girl was watching TV while the Lily got in. 莉莉进来的时候，那个女孩在看电视
When 和while 的相同点和不同点
相同点：多数时when 和while 可以转换使用。
例句：Mary was having dinner when/while I saw her.
不同点：
如果在选择中，如果while 和 when同时出现，while+延续性动作，而when+短暂性动作或延续性动作。
Linda was just going out for shopping________ the telephone rang.
B.while C.after D.because
while "一边……，一边……"; 表示前后情况对比，如：
Mother was cooking in the kitchen, while father was watching TV in the room.
He was cleaning his car while I was cooking.他一边擦车，我一边在做饭。(两个动作同时进行，while在这里是“一边……，一边……”）
What was Jenny doing while Linda was sleeping?琳达在睡觉的时候，珍妮在做什么？（两个动作同时进行，用while）
3.过去进行时的肯定式、否定式和疑问式及其简略答语。
过去进行时的一般疑问句：Was/Were +主语+doing? 肯定回答：Yes, 主语+was/were.
否定回答：No, 主语+wasn't/weren’t.
-Were you working at eight last night ?-Yes, I was./No, I wasn’t.
4.总结：过去进行时的标志词
过去进行时
1.构成：was/were +doing
2.含义：
A) 表示在过去一个比较具体的时间正在发生的动作。除了上下文的暗示，一般用时间状语来表示。
I was doing my homework at this time yesterday.昨天这个时候我在写作业。
-What were you doing at eight last night? 昨晚八点你在干什么？
-I was taking a shower.我当时在洗澡。
B) 如果when, while(两个词表示“当„„的时候”)这样的时间状语引导词所引导的句子常用过去进行时。
I was washing my hair when you knocked at the door.当你在敲门的时候，我正在洗头发。 -What was he doing when the rainstorm came?暴风雨来的时候他在干什么？
-He was reading in the library.他当时在图书馆读书。
I was drawing while my brother came in. 我弟弟进来的时候，我正在画画。
④The girl was watching TV while the Lily got in. 莉莉进来的时候，那个女孩在看电视
When 和while 的相同点和不同点
相同点：多数时when 和while 可以转换使用。
例句：Mary was having dinner when/while I saw her.
不同点：
如果在选择中，如果while 和 when同时出现，while+延续性动作，而when+短暂性动作或延续性动作。
Linda was just going out for shopping________ the telephone rang.
B.while C.after D.because
while "一边……，一边……"; 表示前后情况对比，如：
Mother was cooking in the kitchen, while father was watching TV in the room.
He was cleaning his car while I was cooking.他一边擦车，我一边在做饭。(两个动作同时进行，while在这里是“一边……，一边……”）
What was Jenny doing while Linda was sleeping?琳达在睡觉的时候，珍妮在做什么？（两个动作同时进行，用while）
3.过去进行时的肯定式、否定式和疑问式及其简略答语。
过去进行时的一般疑问句：Was/Were +主语+doing? 肯定回答：Yes, 主语+was/were.
否定回答：No, 主语+wasn't/weren’t.
-Were you working at eight last night ?-Yes, I was./No, I wasn’t.
4.总结：过去进行时的标志词