japończyka

In a sentence

• Wczoraj spotkałem japończyka na ulicy.

  Yesterday, I met a Japanese man on the street.

  Here, 'japończyka' is the accusative case of 'japończyk,' meaning 'a Japanese man,' used as the direct object of the verb 'spotkałem' (I met).

• Kupiliśmy samochód od japończyka.

  We bought the car from a Japanese man.

  In this sentence, 'japończyka' is in the genitive case, showing possession or origin, indicating 'from the Japanese man.'

• Nie znam żadnego japończyka.

  I don't know any Japanese man.

  Here, 'japończyka' is in the accusative case used in a negative sentence with the verb 'znam' (I know), which requires the accusative case in Polish.