I think the entire southern hemisphere might disagree with this statement...
Wiosny is an adjective?
No, it's the genitive form of wiosna.
Why is wiosny genitive?
It's literally "a month OF spring".
Does that mean something that has happened becomes genitive or just something that is connected with OF always goes in genitive?
BTW thx for the reply.
All (I think) instances of English 'of' are translated using Genitive. Sometimes a preposition and Genitive.
Ahh okay dziękuję bardzo.
"month of spring" wasn't accepted :/
It's accepted and it should have worked.
Is "a spring month" not correct?
It is, it is accepted, it should have worked.
Hum I wrote the same as Dimitrios but it wasn't accepted. I am not a native speaker in English, but "a month in the spring" sounds unatural for me.
I agree, adding "the" makes it sound like a specific spring and not every spring
It might be an American vs British difference, but at least in British English it works and does not necessarily suggest a specific spring.