传统上来说,类似的用法是is to do或者直接doing,但现在看美剧也有is do的.只能说语言是个变化的东西,不能一成死板.
All you need to do is to keep quiet
All you need to do it keeping quiet
All you need to do is keep quiet
So,what do you think?
传统上来说,类似的用法是is to do或者直接doing,但现在看美剧也有is do的.只能说语言是个变化的东西,不能一成死板.
All you need to do is to keep quiet
All you need to do it keeping quiet
All you need to do is keep quiet
So,what do you think?