be mad at和be angry with的具体用法差别，be angry with后接人，生或人的气；be mad at透露表现对或人或某事很朝气、很愤恚。angry使用范畴遍及，凡是用于形容人们的感情、行动、表情、语言等，也用于形容植物或事物，常后接介词with/at。
You're just mad at me because I don't want to go.
Don't get mad at me. I did it all for your own good.
While I was angry with her, I didn't lose my temper.
Please don't be angry with me.
We were angry with him for keeping us waiting.