of whom / which引導的定語從句

在非限制性定語從句中，先行詞作為一個整體，表示整體中的一部分，即表示“部分與整體”的關系時，用…of which / whom或者of which / whom…都可以。但與表示所屬關系不同，這里不能用whose來代替of which。

一、表示整體中的部分

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 picked up the apples, some of which were badly bruised. 我揀起那些蘋果，其中有一些傷得很厲害。

I bought a dozen eggs, six of which broke when I dropped the box. 我買了一打雞蛋，六個在我失手掉了盒子時摔碎了。

There are two bottles left, one of which is almost finished and the other of which is not quite. 只剩兩瓶，一瓶快喝完了，另一瓶沒完全喝完。

The treasure some of which has been recovered, has been sent to the British Museum. 這些寶藏已送往大英博物館，其中有一些是失而復得的。

二、表示所屬關系

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

句中的the name of which=whose name。

It was an agreement the details of which could not be altered. 這是一項其細節不可更改的協定。

句中的the details of which=whose details。