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2. 在过去某段时间一直在进行的动作
(a) From 1983 to 1998, he was teaching
at No.3 Middle School.
(b) They were building a bridge last
winter.
(1) 基本结构：was / were + verb-ing
(2) 否定式：was / were not + verb-ing
was not = wasn’t were not = weren’t
— Hey, look where you were going.
喂，看你上哪儿了。
— Oh, I’m very sorry. I wasn’t noticing.
噢，实在对不起。 我刚才没留神。
(3) 疑问句：was / were调到主语前
结构为：Was / Were + 主语 + verb-ing?
回答：Yes, 主语 + was/were.
No, 主语 + was not/wasn’t.
were not/weren’t.
— Were you having dinner at six last
night? 昨晚六点钟你是在吃晚饭吗？
— Yes, I was. 是的，我是。
1.?We were watching TV at nine o’clock last night.? 2. What was he researching all day last Sunday??
3. He?was?cleaning?his?car?while?I?was?
cooking. 4. My brother fell while he was riding his bicycle and hurt himself.? 5. It was raining when they left the station.?
标志词：
when , while , at that moment（在那时) ,
at nine o’clock last night（昨晚9点钟）,
at that time ，this time yesterday等
A Linda was helping at a charity event last Saturday. Read her schedule and complete the sentences below using the past continuous tense.
when, while都有“当……时候”的意思。
Past continuous tense with