he was sad that Hu Jin didn't turn up.这里的that从句在全句中作什么成分啊?

问题描述:

he was sad that Hu Jin didn't turn up.这里的that从句在全句中作什么成分啊?

这里的that从句是状语从句,是修饰sad的,相当一个副词修饰前面的形容词.