
| 类型 | 结构 | 示例 |
|---|---|---|
| Do型 | 动词原形(+宾语)+其它 | Please open the door. |
| Be型 | Be+表语+其它 | Be quiet, please. |
| Let型 | Let+宾语+动词原形+其它 | Let's go shopping. |
| 否定Do型 | Don't+动词原形+其它 | Don't worry about it. |
| 否定Let型 | Don't let+宾语+动词原形+其它或Let+宾语+not+动词原形+其它 | Don't let the cat out.或Let the cat not out. |
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