have fun加to do还是加doing?

have fun加to do还是加doing? have fun+doing吗还是to do be fun to do sth 和have fun doing sth 有什么区别 加 例句 have fun doing sth.还是 have fun to do sth. have fun doing sth 还是have fun to do sth? have the same opportunity加doing还是to do hope加doing还是加to do except加doing 还是加to do have time加to do/doing? require加doing还是to do look forword to 加do还是doing never后加doing还是to do