be good at加名词,介词宾格或动名词(动词+ing)。
例句：
We must be good at learning.
我们必须善于学习。
I used to be good at many things.
过去我擅长很多事。
扩展资料
What helps you to be good at sport?
是什么让你擅长运动？
I just want to be good at something.
我只是想有一项专长。
You must be good at learning at first.
你必须首先擅长学习。
