"Good with" vs "good at"

[lytstephen]

What are the technical difference between "good with" and "good at"? I get a gut feeling that it's "good with + noun" and "good at + gerund". Is that correct at all?

Particularly, which one should I use in the following examples?

1. I'm good ____ grammar.
2. I'm good ____ English, both spoken and written.
3. I'm good ____ speaking and writing in English.

[keithmc]

both are right but "at" would be more normal for all of your examples. "good with" is for a noun and "good at" a verb but it doesn't really matter.

[bonia]

To be good at swimming, maths, English- I would use only 'at'.

[bonia]

I forgot! To be good with money.