80 all，both，few，most，several，some

等+of＋whom/which

这种形式可以用于指人，也可用于指事物。见以下例句。括号中给出的是不那么正式的同义说法。

Her sons，both of whom work abroad，ring her up every week．

她的两个儿子，都在国外工作，他们每周都给她打电话来。

（Both her sons work abroad，but they ring her up every week．）He went with a group of people，few of whom were correctly equipped for such a climb．

他和一队人一起去了，其中没有几个人配有进行这样一次登山的适当装备。

（He went with a group of people；few of them…）

The buses，most of which were already full，were surrounded by an angry crowd．

公共汽车大多数都已经挤满了人，它们被愤怒的人群包围着。

（st of the buses were full，and/but they were surrounded by an angrycrowd．）

I met the fruit-pickers，several of whom were university students．

我遇到了摘水果的人们，其中有几个人是大学生。

（I met the fruit-pickers；several of them were…）

I picked up the apples，some of which were badly bruised．

我拣起那些苹果，其中有一些伤得很厉害。

（I picked up the apples；some of them…）

The house was full of boys，ten of whom were his own grandchildren．

屋子里挤满了小男孩，其中有十个是他自己的孙辈。（The house was full of boys；ten of them…）