i saw him ------his homework just now .应填do 还是 doing
问题描述:
i saw him ------his homework just now .应填do 还是 doing
答
doing
我刚刚看见他正在做作业
答
doing
see sb. do sth. 是强调动作已经发生了,是瞬间
see sb. doing sth. 是强调动作正在进行,是一个过程