"Your mom is in the hallway."
Translation:Twoja mama jest na korytarzu.
In short, because "dialekt mazowiecki"(Masovian dialect) spoken in Warsaw is dominating the language those days - literary language rule says "w" is used for indoor locations, "na" is used for outdoor.
15-20 years ago I would also be protesting about it(because back then I would say "w korytarzu"), but due to influence of Masovian dialect through radio and TV, even I say "na korytarzu" now… But I still say "w stołówce" not "na stołówce", "w pokoju" and not "na pokoju"(not sure if people in Warsaw actually speak like that, this seems really wrong to me) and so on.
Hi, Warszawianka (Warsaw lady) here! You made me think about it for the first time and it's very interesting. We will say "na korytarzu" when it refers to big buildings like schools or offices but actually I would still say "w korytarzu" if talking about a family house (particularly considering our tiny post-communist apartments: "w korytarzyku" just seems more appropriate than "na korytarzyku" (korytarzyk=diminutive of korytarz))
Interesting. So, I guess, it is also "na hali"(I would say "w hali", as in: "koncert odbył się w hali katowickiego Spodka"), "na sali gimnastycznej"(I would say: "w sali[..]"), "na siłowni"(again: "w siłowni") and so on?
I guess it's not so much a indiscriminate use of "na"(which explains why I still thought "na pokoju" is wrong in Masovian dialect), but just a different categorisation – deciding which one to use based on size of the building(and/or whether it is "homely" or not) instead of whether it has roof or not, which in theory is what should make the distinction according to literary language rules. ;-)
I know nothing about Latin, but uncle Google says so:
"Old Latin still had a functioning locative singular, which descended from the Proto-Indo-European form. The locative plural was already identical to the dative and ablative plural. In Classical Latin, changes to the Old Latin diphthongs caused the originally-distinctive ending of the locative singular to become indistinguishable from the endings of some other cases."
Could be. While five minutes ago I would probably say they're synonyms, it turns out that 'przedpokój' usually has different proportions (let's just say that it resembles a normal room much more than korytarz), and the best translation to English is 'anteroom'. Wikipedia treats "Sień" as the equivalent article for the one about "Hallway".
If you say "hallway" then how can that be outside? Hallway in english connotes ceiling and walls leading from one room to another (or to the outside) therefore i always think "w korytarzu", like "w pokoju" "w kuchni" "w łazience". I learned polish in polish school and from my family (from warsawa originally)