I like the books, one of which is written by Trolstoy.
我喜欢书,其中一本是托尔斯泰写的。
I like the book, the one of which all of us are fond.
我喜欢书,就是我们都喜欢的那本。
one of which 被修饰的主词是复数,“其中之一”的意思
the one of which 被修饰的主词是单数, “就是那个”的意思。
the one of which all of us are fond是the book的同位语,其中of which all of us are fond为定语从句修饰the one,从句中的of是短语be fond of(喜爱)的构成部分,可以移到句末。
one of 是众多的任意一个,是不定指。
the one of 是众多中的那一个,是定指。