of whom的用法

He’s written a book the name of which I’ve forgotten.他写了一本书，书名我给忘了。

The house the roof of which was damaged has now been repaired.那幢屋顶被损坏的房子现在已经修好了。

of与其他的词构成固定搭配：即of与从句中的某个词语构成固定搭配。如：

He’s married to a singer of whom you may have heard.他与一位歌唱家结了婚，你可能听说过这个人。(介词of与动词hear构成固定搭配，意为“听说”)

注意：介词of后面除接关系代词which, whom外，有时也可能是whose。如：

She had a teddy-bear, both of whose eyes were missing.她有一个玩具熊，它的两只眼睛都丢了。