see后面接人称宾格还是主格?动词ing形式还是原型?并举例子.

人称是宾格
有两种情况:
(1)see sb. do sth.
(2)see sb. doing sth.
第一种用于看到全过程,例如:I saw him help an old man cross the street.我看见他帮一个老人过街.
第二种指看到在进行的动作,例如:I saw him playing baskitball yesterday.我昨天看到他在打篮球．
类似还有watch,notice,hear,listen to,feel,look at

后接ing和原形外，还可接过去分词，即see sb. done看到某人被……
e.g. Seeing her son taken good care of, the mother was very happy.
同类词还有notice，hear等表具体感官的动词

see sb. doing sth.看见某人正在做某事
see sb. do sth.看见某人做了某事.
做题时根据句意就能区别

宾格
see sb. doing sth. 看见某人正在做某事
如：hear