Work on it had begun before my sister left.work on it 是什么结构

题目

Work on it had begun before my sister left.work on it 是什么结构
We are now living in a beautiful new house in the country.Work on it had begun before my sister left.
我们现在住在乡间的一栋漂亮的新住宅里.这栋房子在我姐姐离开之前就已动工了.后一句可否改为
The new house had begun before my sister left.work on it 是什么结构,

答案

The new house had begun before my sister left你要这样写那意思翻译不通啊,看上去让人不明白是什么意思.你可以改成这样:The work on the new house had begun before my sister left.
Work on it是名字加定语的结构吧.