我们英语书上有一句话是Someone saw him walk into that building at about three this afternoon.为什么句中要用walk,而不用walking,有一句型不是see sb doing sth
问题描述：
我们英语书上有一句话是Someone saw him walk into that building at about three this afternoon.
为什么句中要用walk,而不用walking,有一句型不是see sb doing sth
答