I‘m really mat at Bob.我对Bob非常生气
What for?/Why?
我对Bob非常生气
mat at/生气
I‘m really mat at him.
I‘m really mat at her.
I‘m really mat at Marry.
I‘m really mat at you.
Don‘t be mat at me!
I wouldn‘t be ,don‘t worry.
mat about/我对那个歌手很疯狂。
I‘m really mat about that singer.
I‘m crazy about that singer.
Unit22 I'm really mat at Bob/What for?
原文：http://7883830.blog.51cto.com/7873830/1625254