非限制性定语从句中的who和whom
问题描述：
非限制性定语从句中的who和whom
有两个句子
1.I have seen many foreigners,most of whom are from USA.
2.In our class,there are fifty students,the youngest of whom is Tom.
当中为什么用whom,不用who
这两个句子的从句中,关系代词做主语,不是用who吗
答
因为前面有 of 做介词的宾语,既然是宾语 那就要用宾格了.of whom 来修饰前面的名词了