disappoint\disappointed\disappointing\disappointment这几个词有啥区别啊?

问题描述:

disappoint\disappointed\disappointing\disappointment这几个词有啥区别啊?
好像disappointed和disappointing都是形容词是吧,有什么不同呢?

disappointed是指人对什么事情感到失望
disappointing是什么事情令人失望,令人失望的
disappoint是个动词,使失望
disappointment是名词,失望
He is a disappointment.
His answer is disappointing.
I was disappointed by his answer.