文档介绍：过去进行时
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过去进行时：
I was walking down the street
when it began to rain.
When it began to rain
I was walking
now
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I was walking down the street
when it began to rain.
I was not walking down the street
when it began to rain.
Were you walking down the street
when it began to rain?
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1关键词：was/were doing
2、句子结构：
肯定句：主语+was/were+现在分词+其他
否定句：
主语+was not/were not+现在分词+其他
疑问句：was/were+主语+现在分词+其他
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⑴肯定句：主语 + was/were + (doing) + 其他.
I was playing basketball at 6:30 yesterday.
He was playing the piano at that moment.
They were doing homework at 8:00 last night
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(2)否定句： 主语 + was/were + not + （doing） + 其他
I wasn’t playing basketball at 6:30 yesterday.
He wasn’t playing the piano at that moment.
They weren’t doing homework at 8:00 last night.
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⑶一般疑问句： Was/Were + 主语 + (doing) + 其他
Were you playing basketball at 6:30 yesterday?
---Yes, I was./No, I wasn’t.
Was he playing the piano at that moment?
---Yes, he was./No, he wasn’t.
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⑷特殊疑问句： 特殊疑问词 + 一般疑问句
What were you doing at 8:00pm yesterday?
Where was he working at that time?
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3、标志性词语
（1）at that time. at that moment. yesterday evening
（2）以when引导的谓语动词是一般过去时的时间状语
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II:用法
1. 表示过去某一时刻正在进行的动作。
今天下午5点的时候，他在打篮球。
He was playing basketball at 5 this afternoon.
当我进去的时候，她正在写一篇作文。
She was writing a composition when I entered.
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