I saw him yesterday afternoon

问题描述:

I saw him yesterday afternoon
A playing soccer
B play soccer

A 昨天下午我看见他正在踢足球.“昨天下午”是一个具体的时间,强调进行.see sb doing sth,看见某人正在干某事 see sb do sth 看见某人干某事.不强调正在干的状态.