"My boys see a cat."

Translation: Moi chłopcy widzą kota.

[Uniyou]

Can someone explain the different between moi, moje, moj, moja. like when to use them. (ex. plurel fem cases idk)

[Jellei]

Well, firstly, all of those are in Nominative case. So they will mostly be used as a part of the subject of the sentence.

mój - masculine singular: mój tata, mój kot, mój dom

moja - feminine singular: moja mama, moja kaczka, moja książka

moje - neuter singular: moje dziecko, moje drzewo, moje śniadanie

moi - masculine personal plural: moi chłopcy, moi mężczyźni, moi ludzie

moje - not masculine-personal plural: moje kobiety, moje kaczki, moje książki

[Uniyou]

Dzienki!!!

[w00tw00t]

Confused, “widzą kota”, is kota in the genitive here? Accusative is kot, no?

[tadjanow]

'kota' is in the accusative here.

Here's the full declension:

https://en.wiktionary.org/wiki/kot#Declension_2

[FlorinStat]

That's what I had thought. Works for masculine inanimate nouns
"widzą samochód"; masculine animate or masculine personal nouns are different:
"widzą kota", "widzą chłopaka".
https://en.wikibooks.org/wiki/Polish/Masculine_noun_declension

[Benjamin823105]

Why is "Moi chłopaki widzą kota" wrong here?

[alik1989]

The -ki ending indicates that the plural gender of the noun is nonvirile, so you need to select the pronoun (moje) accordingly.

[Jellei]

"chłopaki" is an illogical exception that you have to remember.