I am glad(that) i went to the doctor.
对于I am adj. that .....这个句型,
章振邦的《新编英语语法》认为:语法学家们对此看法不一。
有人认为that从句是状语从句。如:
I’m glad you like it.
= I’m glad because you like it.
也有人认为是同位语从句。如:
I’m amazed that you should have arrived so early.
= I’m amazed at the fact that you should have arrived so early.
也有人认为是宾语从句。如:
I’m afraid that she can’t succeed in her plans.
=I fear that she can’t succeed in her plans.
至于我呢,我直接把"I am adj. that ....."当成一个固定句型记下来。
记住:先有语言,后有语法。
所以语法上有些地方是有模糊地带的,很正常。