It's no use___you didn'tknow.(pretend) 答案是pretending,为什么不用to pretend

It's no use___you didn'tknow.(pretend) 答案是pretending,为什么不用to pretend
It's no use___you didn'tknow.(pretend) 答案是pretending,为什么不用to pretend

It's no use___you didn'tknow.(pretend) 答案是pretending,为什么不用to pretend
It's no use后面加doing,这是固定用法.表示做某事是没有用的,没有意义的.

no use doing没用的；白搭，是固定搭配