定义 / 说明
祈使句用于指令、命令、建议和请求。动词用原形，主语通常省略。例如我们说 Sit down、Open the window，而不是 You sit down。否定祈使句用 don't。
关键规则
- 用动词原形：Sit down. Open the door.
- 基础祈使句中通常不写主语。
- 加 please 可以让语气更礼貌。
- 否定祈使句用 don't + base verb：Don't touch it.
- 祈使句常见于标识、说明书、食谱和课堂。
例句
- Come in. - 进来。
- Please sit down. - 请坐下。
- Turn left at the bank. - 到银行那里左转。
- Don't run here. - 不要在这里跑。
- Call me tonight. - 今晚给我打电话。
- Please don't open the window. - 请不要打开窗户。
常见错误
- ❌ You sit down. -> ✅ Sit down.
- ❌ Don't to touch that. -> ✅ Don't touch that.
- ❌ Please you help me. -> ✅ Please help me.
提示
- 祈使句有时会显得生硬；想更友好时加 please。