Easy English #1 Preposition “At” and “About”

We use [at] with adjectives like good/bad/amazing/brilliant/terrible, etc. to talk about skills and abilities.

He's really good at English.
She's amazing at the piano.
They're terrible at organising anything.
I'm not very good at drawing.

We often use [about] with adjectives of feelings like angry/excited/happy/nervous/sad/stressed/worried, etc. to explain what is causing that feeling.

I'm angry about the decision.
He's nervous about the presentation.
She's excited about the new job.
They were worried about the exam.