不可以,只能用 needn't / don't have to可上海牛津版的36页就有no she mustn't有时辅助资料上的不一定是对的，要相信自己所学的。 语法书规定以MUST 开头的一般疑问句，其的否定回答不能用mustn't，只能用 needn't ; don't /doesn't have to，如 Must she finish it now ? No, she needn't . / No, she doesn't have to .