The house whose roof was damaged has now been repaired .为什么要用whose啊?

问题描述:

The house whose roof was damaged has now been repaired .为什么要用whose啊?
为什么不能用which呢

roof和house 的 关系是属于的关系 即是house“s roof
所以用whose作为定语从句的连接.
属于的关系用whose 而决不能用which