本文目录
过去完成时是英语中用来表达过去某个动作或状态在过去某一时间之前已经完成的时态。在使用过去完成时时，需要注意一些固定句型，以便更加准确地表达意思。
固定句型一：Had + 完成时态动词 + 动词不定式
这个句型通常用来表达在过去某个时间之前已经完成的动作对现在的影响。例如：
- I had finished my homework before I went to bed. (我在睡觉前已经完成了作业。)
- She had already eaten lunch before she met her friends. (她在见朋友之前已经吃过午饭了。)
- Had you read the book before you watched the movie? (在你看这部电影之前，你读过这本书吗？)
固定句型二：By the time + 过去完成时态动词
这个句型通常用来表达在过去某个时间之前已经完成的动作。例如：
- By the time I arrived, they had already left. (当我到达时，他们已经离开了。)
- By the time we got there, the concert had already started. (当我们到达那里时，音乐会已经开始了。)
- By the time she finished her project, it was already midnight. (当她完成她的项目时，已经是午夜了。)
固定句型三：Before + 过去完成时态动词
这个句型通常用来表达在过去某个时间之前已经完成的动作。例如：
- I had finished my work before I went to the party. (在我去参加聚会之前，我已经完成了我的工作。)
- They had already left before we got there. (在我们到达之前，他们已经离开了。)
- Had you eaten breakfast before you left the house? (在你离开家之前，你吃了早饭吗？)
固定句型四：After + 过去完成时态动词
这个句型通常用来表达在过去某个时间之后已经完成的动作。例如：
- After I had finished my homework, I went to bed. (在我完成作业后，我就去睡觉了。)
- They had left the party after we arrived. (在我们到达之后，他们就离开了聚会。)
- Had you watched the movie after you read the book? (在你读了这本书之后，你看了这部电影吗？)
以上就是关于过去完成时固定句型的一些介绍。学习这些固定句型可以帮助我们更加准确地表达过去某个动作或状态在过去某一时间之前已经完成的意思。
