good at.....good in????急!!!!!

我想問good at English定係good in English?

Good in English 才對!
I am very good in English but very poor in French.

如果你說:
I am very good at English but very poor at French , 只可譯做:
我在英文什好但在法文不好
便不成文.

good at English.

good at系解擅長於某樣野
例如good at swimming,good at singing等

good at english