过去进行时是英语中的一种时态,表示在过去某个时间点正在进行的动作或状态。在该时态中,我们需要使用特定的结构标志词来构成句子。
结构标志词
过去进行时的结构标志词由“be”动词的过去式“was”或“were”和动词的现在分词构成。例如:
- I was studying English at the library.
- They were playing basketball in the park.
用法
过去进行时常用于以下情况:
1. 表示过去某个时间点正在进行的动作
- At 8 o'clock yesterday evening, I was cooking dinner.
- At this time last year, we were traveling in Europe.
2. 表示过去某段时间内持续进行的动作
- She was working at the company for five years before she quit.
- The children were playing outside all afternoon.
3. 表示过去某个时间点正在进行的状态
- He was feeling sick yesterday.
- They were waiting for the train when it started to rain.
需要注意的是,过去进行时通常与过去简单时态连用,用于描述同时或相继发生的动作。例如:
- I was studying English when my phone rang.
- They were playing basketball while I was reading a book.
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