Question

be good at与be good in的区别。

Answer 1

用法都差部多，可以接名词和ING，但是意思有点区别前者后面接动宾，如...+ing,后者接名词 be good at sth
be good in doing sth

Answer 2

be good at + 名词 n
be good in + 动名词 V-ing

Answer 3

be good at擅长
you had to be good at math
be good in 在某方面出色,有效果
The method was proved to be good in reproducibility and of low detection limit.

Answer 4

be good at擅长做某事 be good in对某人友好

Answer 5

be good at sth
be good in doing sth