"Nie znam nazwy tego miasta."

Translation: I do not know the name of this city.

[Klaudialk]

What case is "tego miasta" in here?

[Vengir]

genitive

[AlfredaMen1]

Is nazwy plural?

[Vengir]

„Nazwy” can be nominative plural, accusative plural, or genitive singular. Here it's the last one.

[Rafkens]

"I do not know name of the city" is incorrect?

[Jellei]

'the name'. Plus oczywiście 'the' jest co najwyżej interpretacją, nie tłumaczeniem "tego".

[vogliocapire]

(I don't know this city's name) is not correct?

[Jellei]

Fine with me, added.

[kermodii]

Remind me, what's the word for name, for animated things again?

[alik1989]

https://en.pons.com/translate/english-polish/name

[kermodii]

Thanks! Interesting source...might have to bookmark that handy-looking translator.

[joshmcguir11]

I do not know this city name is not acceptable?

[tteplyj]

Dzien dobry.
Jaka jest różnica pomiędzy słowami wiem i znam?

[Vengir]

This should explain everything https://forum.duolingo.com/comment/25535826