— May I 类型问句1)—May I —No,you mustn't / can't.2)—Must I —No,you needn't / don't have to.这2个问答句为什么不能直接用什么问就用什么答?(这一问最重要)Many thanks!

问题描述:

— May I 类型问句
1)
—May I
—No,you mustn't / can't.
2)
—Must I
—No,you needn't / don't have to.
这2个问答句为什么不能直接用什么问就用什么答?
(这一问最重要)
Many thanks!

总之must I的提问,都用needn't回答

may i 是客气的说法

May I...? 是"我能(做某事)吗?"回答是"你不能",用can't/mustn't,而不是"may not"(可以不)而Must I...?"我必须做某事吗?"回答是"不,你不必,没必要"No,you needn't / don't have to. 而"you mustn't "(你绝对不能),不...