be good at doing sth.和be good at sth.区别
问题描述：
be good at doing sth.和be good at sth.区别
答
实际上没区别,因为doing sth 是动名词,sth是名词,动名词和名词都是名词性质.意思一样,表达不一样而已.比如：
He is good at studying English=
He is good at English.