mustn't

剑桥词典

short form of must not
（must not的缩略形式）
You mustn't worry too much about this. 你不必对此太担心。

例句

• You mustn't go into the garden .
• Tell them they mustn't make too much noise .
• You mustn't leave litter lying around.
• I mustn't forget my keys .
• She mustn't feel she has to pay .
返回 mustn't