A.
His words went unbelieved by all sorts of people . 句中的 -ed分词分句作状语
B.
Born into a poor family , he had only two years of schooling. 句中的 -ed分词分句作状语,表原因
C.
United , we stand; divided , we fall. 句中的 -ed分词分句作状语,表条件或时间。
D.
The men, soaked with sweat from an all-night march , immediately went into action .句中的-ed分词分句作名词的后置修饰成分