It was many years later- I had an opportunity TO DO IT again

问题描述：

It was many years later_ I had an opportunity TO DO IT again.请问是为什么不用BEFORE而用了THAT?
能否顺便提供一下BEFORE和THAT用法的区别?
那么BEFORE的用法又是什么>我记得有在IT后面跟上BEFORE的.

1个回答分类：英语 2014-10-10