【过去完成时例句】过去完成时是英语中一种重要的时态，用于描述在过去某一时间或动作之前已经发生的事情。它常与另一个过去的时间点或动作搭配使用，以表明先后顺序。掌握过去完成时的用法和例句，有助于更准确地表达事件之间的关系。
一、过去完成时的基本结构
过去完成时的构成是：had + 过去分词（V-ed）
- 肯定句：主语 + had + 过去分词
- 否定句：主语 + had not + 过去分词
- 疑问句：Had + 主语 + 过去分词？
二、常见用法
1. 表示在过去某个时间点之前已经完成的动作
例如：“When I arrived, she had already left.”
2. 在叙述过去的经历时，强调事件发生的先后顺序
例如：“He had studied English for three years before he moved to the UK.”
3. 用于间接引语中，表示说话人之前已经知道的信息
例如：“She said that he had finished his work.”
三、过去完成时例句总结
以下是一些常见的过去完成时例句，帮助理解其用法：
| 句子 | 中文解释 |
| I had eaten breakfast before I went to school. | 我上学前已经吃过了早餐。 |
| They had left before we arrived. | 我们到达之前他们已经离开了。 |
| She had lost her keys when she came home. | 她回家时已经丢了自己的钥匙。 |
| He had worked there for five years when he quit. | 他辞职时已经在那工作了五年。 |
| We had just finished our homework when the phone rang. | 我们刚做完作业电话就响了。 |
| The movie had started when we got to the cinema. | 我们到电影院时电影已经开始了。 |
| She had never seen a snowstorm before. | 她以前从未见过暴风雪。 |
| They had already bought the tickets by the time we reached the station. | 我们到达车站时他们已经买好了票。 |
| I had met him once before we became friends. | 在我们成为朋友之前我曾经见过他一次。 |
| He had been waiting for an hour when I called him. | 我打电话给他时他已经等了一个小时。 |
通过以上例句可以看出，过去完成时在表达“过去的过去”时非常实用。合理使用这一时态，可以让语言更加清晰、逻辑更严谨。希望这些例句能帮助你更好地理解和运用过去完成时。
