关于having done/having been done作定语

The old man ,having worked abroad for twenty years, is on his way back to home这道题目中 having worked abroad for twenty years做什么成分 having done/having been done可以作定语吗 谢谢.
再说having worked abroad for twenty years修饰主语的词叫宾语，又不是定语。 ....暴汗...

关于having done having been done 与done 关于非谓语动词,解释一下HAVING DONE和DONE的区别,在线等! being done having been done的区别 having been done 和done作状语的区别 having been done和have been done的区别 对having done/having been done作状语时 不清楚 the boy's not having done the assignment 中the boy's not having done为何不用the boy having not done 有没有consider having done这种时态用法? 非谓语动词having been done,to have been done什么时候用？