I saw him go into the classroom just now .为什么SAW后的动词不是ING形式呢?

问题描述:

I saw him go into the classroom just now .为什么SAW后的动词不是ING形式呢?

see的用法有两种
see sb do sth,see sb doing sth,do sth强调那个动作做了,doing sth强调那个动作正在进行,因为是我看见他刚刚就进入了教室,说明动作已经完成,做过了,所以用do,而不用doing.