be confident of doing sth,那么be confident of to do sth是不是也可以?

问题描述:

be confident of doing sth,那么be confident of to do sth是不是也可以?

有这个说法,但习惯用法是 confident 前面或后面加副词,比如
One should be confident enough to do what is right when faced with difficult choices.
One must be very confident to do unpopular things in the face of opposition

不行啊,of是介词啊,后面要加v-ing的

不可以
of是介词,后面加名词或动名词 doing 是动名词