"Znamy obu mężczyzn."

Translation: We know both men.

[rodatame]

And why is it "mężczyzn" and not "mężczyzni"? I thought it was accusative (biernik)

[Babette397877]

Is it genitive (mężczyzn) because it is implied both 'of' the men when 'of' always takes the genitive case?

[br0d4]

No, it is Accusative. But the Accusative plural and Genitive plural of "mężczyzna" look the same: http://sgjp.pl/leksemy/#8726/m%C4%99%C5%BCczyzna

[AdamMlodoz]

I constructed "we both know men" which does have a pretty different meaning from "we know both men"

Could this possibly be translated as "we both know men" or would it be more like "we both know about men"

[immery]

Znamy obu męzczyzn. . We know both men. We know Adam and Marek

Obie znamy mężczyzn - We both (Ania i Kasia) know men
Obaj znamy mężczyzn- We both (Adam i Marek) know men
Oboje znamy mężczyzn - We both (Kasia i Marek) know men

I think those three at first interpretation are about "we know how men are like".

[br0d4]

Frankly I would translate this to English as "We know both the men" or perhaps "We know both of the men", but I am not a native speaker of English, so I do not know whether it would be the best translation possible.

[zagadka314]

I wrote "We know both men." You could add "of the" but just added "the" sounds like some of the dialects that often just ignore "of" before "the." I think only a few dialects do that but I am in one of them so I don't really know how common that is.

[Jack.Elliot]

We know the two men

[Firehorse1966]

A czy nie powinno być,,we know both of men,,?

[Jellei]

Nie. "of" w podobnym zdaniu mogłoby co najwyżej odpowiadać polskiemu "z", np. "both of them" = "obaj z nich".