作宾语补语的动词用现在分词还是过去分词,跟这一分词与宾语的语义关系有关.如果分词的动作行为由宾语来实施,也就是说宾语与分词是主动关系,那么就要用现在分词；如果分词的行为作用在宾语上,或者说宾语是分词的受事,那么就是被动关系,分词要用过去分词. 举例：Nobody in the store had noticed her lifting some canned milk powder.But this morning,we saw her caught by a security guard of the store.
