be good at与 do well in
问题描述：
be good at与 do well in
be good at = do well in
be good at doing sth = do well in doing sth.
It is good at riding a bike.
It does well in riding a bike.
答
be good at = do well in
be good at doing sth = do well in doing sth.
我觉得是对的.
It is good at riding a bike.
It does well in riding a bike.
语法没有问题.但是这两个 一般主语都是用人.