i have two brothers, both of whom are doctors. 到底whom 怎么用啊 这里whom 不是主语了么。。

如题。。有人说 both 是主语 whom 是宾语。。不明白。。

I have two brothers, both of whom are doctors
定语从句

关系词whom只作宾语，若主语，则用who
句子分析：
I 主语
have 谓语
two brothers, 宾语
both of whom are doctors 非限定性定语从句

Your name is pretty good. 忘了of的后面加Which、Whom不加Who吗?

whom是who的宾格,在口语中常用who代替.

你好！ 这是个定语从句，前半句是主句，后半句是从句，whom是who的宾格形式，因为前面是of，是介词，所以要用宾格形式的whom，both of whom作从句的主语，指代brothers。 仅代表个人观点，不喜勿喷，谢谢。