see sb do 和see sb doing 的用法

1.see sb doing
看到某人正在做某事
 I saw him playing basket on the playground.
2.see sb do 强调动作的全过程(要注意这里的do 是省略to的不定式)

 I saw him go into that room.
 
如果变为被动to不省略
 He was seen to go into that room.
 
3.see sb done 表宾语和动词之间是被动的关系。
 I saw him tied to a tree yesterday.

 我昨天看见他被绑在一棵树上了。
此类词还有:
 see,watch,look at,observe,hear, listen to,feel