时间:2026-07-28 18:25:25来源:
时间状语从句用于表示主句动作发生的时间。常见的引导词有when, while, as, before, after等。它们帮助明确事件发生的先后顺序或同时性。
| 引导词 | 用法说明 | 例句 |
| when | 表示“当……时”,可指过去、现在或将来 | When I arrived, the meeting had started. |
| while | 表示“在……期间”,强调两个动作同时发生 | She was cooking while I was studying. |
| as | 表示“随着……”或“当……时”,常与进行时连用 | As the sun rose, the birds began to sing. |
| before | 表示“在……之前” | He left before I could say goodbye. |
| after | 表示“在……之后” | We went home after the party ended. |
正确使用时间状语从句,有助于清晰表达事件的时间关系,使语言更自然、准确。