It was a hard life that was waiting for me 是什么从句

问题描述:

It was a hard life that was waiting for me 是什么从句

这是个强调句型.
it is +强调部分+that ...有的朋友说是定语从句我觉得也有道理呀。,能否讲讲这两种句式的区分?谢了不是的,正常的说法是:a hard life was waiting for me