定义 / 说明
时间连接词把两个动作连接起来，并说明它们的时间关系。像 when, before, after, 和 while 可以表达先后或同时发生。它们在说明、叙事和日常计划中非常常见。比如 before 表示一个动作更早，while 表示两个动作同时进行。这些小词能让时间关系更清晰。
关键规则
- when 用于把某一时点与另一动作连接：Call me when you arrive.
- before 表示更早动作：Wash your hands before you eat.
- after 表示后发生动作：We went home after the film ended.
- while 表示同时发生，常配一个较长背景动作。
- 连接词后面用完整从句（主语 + 动词）。
例句
- Call me when you arrive. - 你到的时候给我打电话。
- Wash your hands before you eat. - 吃饭前先洗手。
- We went home after the film ended. - 电影结束后我们回家了。
- She listened to music while she was cooking. - 她做饭时在听音乐。
- I saw him when I was leaving. - 我正要离开时看见了他。
常见错误
- ❌ Call me when arrive you. -> ✅ Call me when you arrive.
- ❌ Wash your hands before eat. -> ✅ Wash your hands before you eat.
- ❌ She listened to music while cooking she was. -> ✅ She listened to music while she was cooking.