W piątek jest wypłata, więc po pracy idę na zakupy.

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Breakdown of W piątek jest wypłata, więc po pracy idę na zakupy.

• być: to be
• iść: to go
• na: for

Questions & Answers about W piątek jest wypłata, więc po pracy idę na zakupy.

Why is it w piątek and not just piątek?

Because w + the accusative case is a very common way to say on a day of the week in Polish.

• w piątek = on Friday
• w poniedziałek = on Monday
• w sobotę = on Saturday

So in this sentence, W piątek means On Friday.

Polish sometimes allows day names without w in certain contexts, but for learners, w + day of the week is the safest and most standard pattern to use.

Why does piątek stay piątek after w? I thought prepositions usually change the noun ending.

Good question. Prepositions often do cause case changes, but sometimes the accusative form looks exactly the same as the nominative form.

Here:

• nominative: piątek
• accusative: piątek

So the form does change grammatically, but it just happens to look identical.

Compare that with:

• sobota → w sobotę
• niedziela → w niedzielę

There, you can clearly see the accusative ending change.

What exactly does wypłata mean here?