they were an elderly couple who lived in an old house on what was left of the family farm.
问题描述：
they were an elderly couple who lived in an old house on what was left of the family farm.
帮我分析一下句子结构,我很不明白后面on what was left of the family farm.是怎么回事,
答
如果将这句句子稍稍调整一下,你可能就明白了：
They were an elderly couple who lived on what was left of the family.(他们是一对老夫妇,住在一套破旧的房子里,靠着家属农场仅存的家产生存)
这里,on应该是live on,靠什么生存,只是中间插入了in an old house.
这样是不是好理解了一点.