The teacher often tells Jim and David not to spend too much time playing computer games.
问题描述:
The teacher often tells Jim and David not to spend too much time playing computer games.
为什么用playing,不用to play?
答
固定句型Sb. spend.doing sth.spend 主语是人 1.sb. spend……on sth. 2.sb. spend……(in) doing sth. 例如:He spent twenty yuan on the book. he spent two hours (in) finishing the work.