Question

高中英语语法 求解答

关于NEED和MUST还有DARE的反义疑问句用法 有哪位大神好帮忙细细讲一下么？谢谢~~~~~~~

Answer 1

dare和need作为情态动词（后接动词原形）的反意疑问句，疑问部分常用 need (dare ) +主语。
We need not do it again, need we ?
He dare not say so, dare you?

当dare, need 为实义动词（敢，需要）时，疑问部分用助动词do + 主语。

She doesn't dare to go home alone, does she?

must特殊些
当作"必须"时，用needn't提问
You must go now,needn't you?

当是mustn't(不允许，禁止)时，用must/may提问。
You mustn't smoke here,must/may you?

当must表推测，译为“一定，准是”时，要将句子改为i am sure that从句，反义疑问部分的动词形式根据be sure后的宾语从句的谓语动词形式决定。
例如，You must be hungry→i am sure that you are hungry,aren't you?
→原句变为You must be hungry,aren't you?

Answer 2

情态动词dare或need need (dare ) +主语
dare, need 为实义动词 do +主语

must表"推测" 根据其推测的情况来确定反意疑问句