英语中的过去进行时
过去进行时(Past Continuous Tense)是一种表示过去某个时间点正在进行的动作或状态。
在英语中,过去进行时由“was/were + 动词的现在分词”构成。
例如:
1. She was reading a book when I came in. (当我进来时,她正在看书。)
2. They were playing football at that time. (在那个时候,他们正在踢足球。)
过去进行时通常用于描述一个过去正在进行的动作或状态,这个动作或状态可能与另一个过去的动作或状态同时发生。
例如:
1. While she was cooking, I was watching TV. (当她在做饭时,我正在看电视。)
2. We were talking on the phone when the power went out. (当我们在打电话时,停电了。)
在某些情况下,过去进行时也可以用来表示过去某个时间点之前已经开始并且持续了一段时间的动作或状态。
例如:
1. I was living in Paris for three years before I moved to London. (在搬到伦敦之前,我在巴黎生活了三年。)
2. They had been working on the project for two months before it was completed. (在项目完成之前,他们已经在这个项目上工作了两个月。)
例:
1. I was reading a book.
2. They were playing football.
在这个时态中,“was”用于主语是单数的句子,而“were”用于主语是复数的句子。动词的现在分词可以通过在动词后面添加-ing的形式获得。
例如:
1. read - reading
2. play - playing
过去进行时可以表示过去某个时刻正在进行的动作,或者表示在过去某个时间点之前已经开始的动作。
例如:
1. At 5:00 yesterday, I was watching TV.
(表示过去某个时刻正在进行的动作)
2. When I arrived, they were having a meeting.
(表示在过去某个时间点之前已经开始的动作)
需要注意的是,过去进行时不能表示在过去的某个时间点之前已经完成的动作。
例如:
1. I was reading a book before I went to bed. (错误)
2. I read a book before I went to bed. (正确)
在这个例子中,应该使用一般过去时来表示过去的某个时间点之前已经完成的动作。
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