过去进行时态

过去进行时态

一. 结构:

主 + was/were + V ing.

1.肯定句:

Li Lei was watching TV at 8:00 last night.

昨晚8:00李雷正在看电视.

我离开时他们正在打扫教室.

They were cleaning the classroom when I left.

2.否定句:

主 + was/were + not + V ing.

Was Li Lei watching TV at 8:00 last night?

They were not cleaning the classroom when I left.

3.一般疑问句:

Was/Were + 主 + V ing?

Li Lei was not watching TV at 8:00 last night?

Were they cleaning the classroom when I left?

4.特殊疑问句:

特殊疑问词/短语+was/were +主+V ing?

What was Li Lei doing at 8:00 last night?

Who were cleaning the classroom when I left?

When was Li Lei watching TV?

What were they cleaning when I left?

二.用法

1.表示在过去某个时间点正在发生的动作.常与at ten last night,,(at)this time yesterday,at that time/moment,when l came in等连用.

2.表示在过去某段时间之内正在发生的动作.常与last night, this morning连用.

He wrote a letter this morning.

He was writing a letter this morning.

区别: 今天上午他写了一封信.

今天上午他一直写信.

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