work on it had begun before my sister left.这句话的主语是倒装句吗?
问题描述：
work on it had begun before my sister left.这句话的主语是倒装句吗?
答
Work on it had begun before my sister left.
这句话的意思是：这栋房子在我姐姐离开之前就已经动工了。
这里的Work是名词，作“工作”解，
后面的on it是介词短语，作work的后置定语。
had begun 谓语，before my sister left 是时间状语从句。
希望可以帮助你理解，有问题的话请反馈！
答
不是。Work on it which/that had begun before my sister left.
答
Work on it had begun before my sister left.这栋房子在我姐姐离开之前就已动工了.
Work在这儿是名词,意思是“工作”on it---介词短语作后置定语修饰work;
had begun 谓语动词,before my sister left时间状语从句.