如果说一个英语句子,...must...改为否定句是 must not还是needn't
如果说一个英语句子,...must...改为否定句是 must not还是needn't
“must”的反义是不是“mustn't”?为什么“must”开头的句子否定回答是“needn't”?
must 提问 ,否定回答 是用 mustn't 还是 needn't?
将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空
It must be yours.改为否定句怎么改啊?是用mustn't be还是用can't
回答must的否定句什么时候用mustn't什么时候用needn't?
前面是must的句子,.改成反意疑问句是加mustn't he 还是needn't he
以must 开头的疑问句,否定回答是 needn't,don't have to可以吗?
have to,must,do not need,needn't的区别
must的否定?must的否定是need't还是don't have to?
含有情态动词must的句子改为一般疑问句,否定句分别是怎样的
must的否定形式有两种:must't和can't,needn't 这两种否定形式有啥不同啊?