czwartek

In a sentence

• Idziemy do kina w czwartek.

  We are going to the cinema on Thursday.

  Here, 'czwartek' is used as a noun in the nominative case to indicate a specific day of the week.

• Czwartek jest piątym dniem tygodnia roboczego.

  Thursday is the fifth day of the work week.

  In this sentence, 'czwartek' serves as the subject of the sentence, describing what Thursday represents.

• Nie spotkaliśmy się od ostatniego czwartku.

  We haven't met since last Thursday.

  Here, 'czwartku' is in the genitive case, used after a preposition to indicate 'since last Thursday'.