There are different activities you can do where if you're good enough at them, if you're expert enough at them, you don't know you're doing them.

有很多不同的事情,如果你很擅长这些活动，你对这些活动非常在行，那么你是不会意识到你正在做这些事情的。

耶鲁公开课 - 心理学导论课程节选

I am good at teaching you patterns.

教你们句型我很在行哦。

I'm good at 课堂 - SpeakingMax英语口语达人

I'm good at reading.

阅读我很在行。

I'm good at 实战 - SpeakingMax英语口语达人