问一道新概念英语的选择题 this morning I saw him ( )his homework,but I don't k_英语解答

问一道新概念英语的选择题
this morning I saw him ( )his homework,but I don't know whether he has finished it or not A do B to do C done D doing

人气：154 ℃　时间：2020-05-10 11:33:21

解答

选D,
see sb doing是指看到某人正在做某事,是看到的一个片断,而see sb.do sth是看到某人做某事的过程.因为今天早晨看到他正在写作业,而现在不知道是否完成,所以早晨看到的是一个片断,应该选D