.1.窗户朝南的那间房间是我的。The room whose window faces south is mine.=The room of which the window faces south is mine.1. 整座城市躺在废墟中,其中百分子75的工厂和大楼消失不见了。The whole city, 75% of whose factories and buildings were gone, lay in ruins.2. 我们公司有2000工人,三分之二是女工。Our company has 2000 workers, of whom two thirds/ two thirds of whom are women.3. 那些被困在废墟里的人已经得救了。Those who were trapped under the ruins finally got rescued.4. 你们刚才谈论的那场地震好可怕呀!The earthquake that you were talking about sounded frightening/s