1. of表示同位關(guān)系：即用于在A+of+B結(jié)構(gòu)，其中的A和B為同位關(guān)系。如：

Her sons, both of whom work abroad, ring her up every week. 她的兩個(gè)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(jīng)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(guān)系：即用于“部分+of+整體(which, whom)”結(jié)構(gòu)。如：

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

The buses, most of which were already full, were surrounded by an angry crowd. 公共汽車大多數(shù)都已經(jīng)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(gè)人是大學(xué)生。

3. of表示所屬關(guān)系：即of用于構(gòu)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(xiàn)在已經(jīng)修好了。

4. of與其他的詞構(gòu)成固定搭配：即of與從句中的某個(gè)詞語構(gòu)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(jié)了婚，你可能聽說過這個(gè)人。(介詞of與動(dòng)詞hear構(gòu)成固定搭配，意為“聽說”)

注意：介詞of后面除接關(guān)系代詞which, whom外，有時(shí)也可能是whose。如：

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

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