it's reported that two schools ,both of which are being built in my hometown ,will open next year

问题描述:

it's reported that two schools ,both of which are being built in my hometown ,will open next year
both of which
为什么不用both of them?

把两个逗号中间的句子去掉以后,头尾两段形成一个完成的句子.这说明,中间那段不是句子,是一个从句,定语从句,修饰two schools.定语从句有定语从句的用法,two schools是先行词,which是引导词,因为有both of 这个介词短...