本文目录
过去完成时是英语语法中的一种时态,用于描述在过去某一时间点之前已经完成的动作或状态。通常由 had + 过去分词构成,例如:
- I had finished my homework before I went to bed.
- She had already eaten breakfast when I arrived.
过去完成时的使用情况如下:
1. 表示过去某一时间点之前的动作或状态
过去完成时常用于描述在过去某一时间点之前已经完成的动作或状态。例如:
- By the time I arrived at the party, the guests had already left.
- They had lived in New York for five years before they moved to Los Angeles.
2. 表示过去某一时间段内的动作或状态
过去完成时还可以用来描述过去某一时间段内已经完成的动作或状态。例如:
- He had been studying English for two years before he moved to the United States.
- By the time she graduated from college, she had been playing the piano for ten years.
3. 与过去时态连用
过去完成时还可以与过去时态连用,用来表示先后发生的动作。例如:
- I had finished my breakfast and then I went to work.
- She had visited Paris twice before she met her husband.
总之,过去完成时用于描述在过去某一时间点之前或过去某一时间段内已经完成的动作或状态,是英语语法中比较常见和实用的时态之一。