see sb.do sth和see sb.doing sth.的区别?
问题描述：
see sb.do sth和see sb.doing sth.的区别?
I saw a group of boys ( )football on the playground.
A.played B.to play C.playing D.plays
该选哪个,为什麽?
答
C.playing
就像你说的,要么do,要么doing,符合条件的,只有C.
D 多了一个s