be mad at和be angry with的具體用法不同，be angry with后接人，生某人的氣；be mad at表示對某人或某事很生氣、很氣憤。angry使用范圍廣泛，通常用于形容人們的情緒、行為、表情、語言等，也用于形容動物或事物，常后接介詞with/at。

You're just mad at me because I don't want to go.

因為我不想去，你就對我火冒三丈。

Don't get mad at me. I did it all for your own good.

別生我的氣,我這樣做完全是為了你好。

While I was angry with her, I didn't lose my temper.

雖然我很生氣，但我當時沒有對她發脾氣。

Please don't be angry with me.

請不要生我的氣。

We were angry with him for keeping us waiting.

我們對他讓我們久等而生氣。