...类似语法知识点,个别动词用法,+doing,+to do,等等答:mind doing sth.keep doing sth.2.固定短语:feel like doing sth.be busy doing sth.be worth doing spend time (in) doing sth.have difficult/trouble in doing sth have fun doing 3.介词后(on, in, of, about, at, with, without, for, from, up, by等)be good at doing sth.tha...