we are not allowed to touch it=we mustn't touch it为什么不是等于we mustn't to touch it

问题描述:

we are not allowed to touch it=we mustn't touch it
为什么不是等于we mustn't to touch it

MUST是情态动词 加原型

楼上说的对

mustn't是情态动词,后面加动词原型,不用to的

must是情态动词,情态动词后面加动词原形