old man,______ abroad for tewnty years,

题目

old man,______ abroad for tewnty years,
The old man,______ abroad for tewnty years,is on the way back to his motherland.
A.to work B.working C.to have worked D.having worked
此题答案是D.这是个分词做定语还是分词做状语.原结构是怎样的?省略了什么?

答案

应该是分词做定语修饰主语 old man
完整结构是 The old man who has worked abroad for twenty years is on the way back to his motherland.