all of them :all of which:all of whom 的区别

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all of them :all of which:all of whom 的区别
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能不能给些例句

all of them 可以作为主语,指所有的XXX,这个them所指的对象前文中已经提到的,可以指人、事物等等,举个简单的例子:We have ten people in the room; all of them are girls. 其中all of them are girls也可单独成句....