"You speak Polish brilliantly."

Translation: Świetnie mówicie po polsku.

[kiddo-depido]

Oh my

[JerryMcCarthy99]

"Brilliantly" in the sense of "very well indeed" is very British. Might puzzle speakers of other Englishes. Just sayin'.

[tomboysquirrel]

I think everyone should say "brilliantly" more. It's nice-sounding.

[5134ad]

wy is rozmawie instead of mowisz not acceptable

[JerryMcCarthy99]

Is that from "rozmawiać"? If so, that would mean something like to "speak to someone"/"have a conversation with someone". In any case, I think that the present tense form for "you" would be "rozmawiacie". My source: https://en.wiktionary.org/wiki/rozmawia%C4%87 . Happy to be corrected...