这个句子that后面到底是什么从句,现在还没有定论,但我们一般看成是宾语从句,
常引导宾语从句的形容词有:sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised
I am sure I will pass the exam.
I am sorry that I have troubled you so long.
He is glad that Li Ming went to see him when he was ill.
glad的表语从句