"Mówicie po polsku."
Translation:You speak Polish.
I'm trying to undertand the mechanics of "po polsku" here. So I know that "po" is a preposition that takes the accusative or the locative case.
My question: is "polsku" (in whatever case it may be, acc. or loc.) an adjective that has been turned into a noun (e.g. in Spanish "el bueno" - the good one), or the noun itself for the language of Polish. And if the latter, what is the base word and its gender.
I ask this because on google translate, when I look up "Polish" it gives me "Polskie", also "język polski" (the polish language, where polish is an adjective).
I can't get a handle on the gender for "Polskie". because when I try my usual strategy of discovering a gender by putting "good" in from of it, google translates "good Polish" as "dobra Polski" indicating feminine gender. But the feminine endings for acc. and loc. cases do not feature "u" (as in "po polsku").
From the endings, "polsku" is either masc. loc., neut. loc.,
or possibly masc. acc. (if it is treated as an "animate" object, and devolved to the masc. gen.).... but I think this is unlikely....
I checked the adjectival endings too, and none of them have "u", apart from some dative endings, which could not possibly apply here.
I'm tending to think google translate is giving me a bum steer as to the gender of the word and its actually male or neuter... but then the stem seems to indicate an -e ending rather than -u in the loc. Help!
Sorry, I'm trying to reverse engineer the sentence from my limited resources...
When "po" is used with languages, the following adjective (e.g., "polski") takes the dative case. However, with "po" an old dative ending "-u" is used (cf., the neut. sg. dat. noun ending "-u") instead of "-emu" for all adjectives ending in "-ski", resulting in "polsku" and not "polskiemu"
Thanks to you, I found it here: https://en.wiktionary.org/wiki/po_polsku Then I went back and it was on the page before. I think originally I had been on this page, but it is talking about Poland for the noun.: https://en.wiktionary.org/wiki/Polska#Polish
It's the combination of "c+i" which makes the difference here; see https://en.wikiversity.org/wiki/Polish_language/Alphabet_and_phonetics for more details.