of whom和of which用法歸納

1. of表示同位關系：即用于在A+of+B結構，其中的A和B為同位關系。如：

Her sons, both of whom work abroad, ring her up every week. 她的兩個兒子，都在國外工作，他們每周都給她打電話來。

We’ve tested three hundred types of boot, none of which is completely waterproof. 我們已經測試過300種靴子，沒有一種是完全防水的。

2. of表示整體與部分的關系：即用于“部分+of+整體(which, whom)”結構。如：

He went with a group of people, few of whom were correctly equipped for such a climb. 他和一隊人一起去了，其中沒有幾個人配有進行這樣一次登山的適當裝備。

The buses, most of which were already full, were surrounded by an angry crowd. 公共汽車大多數都已經擠滿了人，它們被憤怒的人群包圍著。

I met the fruit-pickers, several of whom were university students. 我遇到了摘水果的人們，其中有幾個人是大學生。

3. of表示所屬關系：即of用于構成所有格。如：

He’s written a book the name of which I’ve forgotten. 他寫了一本書，書名我給忘了。

The house the roof of which was damaged has now been repaired. 那幢屋頂被損壞的房子現在已經修好了。

4. of與其他的詞構成固定搭配：即of與從句中的某個詞語構成固定搭配。如：

He’s married to a singer of whom you may have heard. 他與一位歌唱家結了婚，你可能聽說過這個人。(介詞of與動詞hear構成固定搭配，意為“聽說”)

注意：介詞of后面除接關系代詞which, whom外，有時也可能是whose。如：

She had a teddy-bear, both of whose eyes were missing. 她有一個玩具熊，它的兩只眼睛都丟了。