UC知道He must do his homework,______he?
来源：百度知道 编辑：UC知道 时间：2024/09/21 03:21:41
反意疑问句
(A) needn't
(B) mustn't
并说明理由.
(A) needn't
(B) mustn't
并说明理由.
(A) needn't
must都是用这个，固定搭配
A
must的反意疑问形式是needn't。
A
must的反意疑问形式是needn't。
A
老师讲的need not变must not
A
理由：在主句中，如果must当有必要讲时，反意疑问句用needn’t.
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