Good

[Tdol]

[Firelord]

i heard of "be good at"
that's only what i get

[MikeNewYork]

i heard of "be good at"
that's only what i get

"At" is correct, but "in" is also a proper choice. :wink:

[Tdol]

In British English, we don't use 'in' here much at all.

[MikeNewYork]

In British English, we don't use 'in' here much at all.

One more difference.

[Tdol]

Yet another!

[vikulika]

The rule that for example "Vocabulary in Use" gives us is "to be good at", but it sound weird if we say "to be good at arts", doesn't it?
So I guess it is good at, but sometimes in appears.. like exceptions.. or like AmE..

[Tdol]

I'd use 'at' here, but many American speakers would use 'in', which would be uncommon in the UK.

[SunnyDay]

I've actually rarely heard anyone use "good in math" unless they mean the class (as opposed to the subject), whether they say the "class" part or not.

He's good in math [class].

At the same time, though, saying "He's good at math class" as opposed to math as a subject sounds a little funny to me.

[1364]

Hi there,
Is there any special rule for such questions,"to use a correct preposition".
Thanks