It ()five years()i began to study English

问题描述:

It ()five years()i began to study English
答案是is before 想知道为什么

形容XX年之前的方式有it was five years ago和it is five years before(when)...第二种一般只能跟一个从句,你这句话里面后面是一个从句,I began to study English第一种情况就不太适合了,因为ago后面没法跟从句所以...