如何区分是定语还是状语,请看下面:
过去分词短语有时也可用作非限制性定语,前后常有逗号.
The meeting, attended by over five thousand people, welcomed the great hero.
他们举行了欢迎英雄的大会,到会的有五千多人.
过去分词作状语的位置.过去分词可放在主句前作句首状语,后面有逗号与主句隔开;也可放在主句后面,前面有逗号与主句隔开.
He stood there silently, moved to tears. = Moved to tears, he stood there silently. 他静静地站在那里,被感动得热泪盈眶.
明显楼主的句子是过去分词作状语