Kiedy kelner przynosi jedzenie, zdejmuję słuchawki, żeby go usłyszeć.

When the waiter brings the food, I take off my headphones so that I can hear him.

Breakdown of Kiedy kelner przynosi jedzenie, zdejmuję słuchawki, żeby go usłyszeć.

• ja: I
• kiedy: when
• żeby: so that
• kelner: the waiter

Questions & Answers about Kiedy kelner przynosi jedzenie, zdejmuję słuchawki, żeby go usłyszeć.

What does Kiedy mean in this sentence, and could I use something else instead?

Kiedy means when and introduces a temporal (time) clause. It tells you when something happens. You can often swap it with Gdy (also “when”):

• Gdy kelner przynosi jedzenie, …
  Both are correct, though kiedy sounds a bit more neutral and conversational.

Why is przynosi in the present tense instead of the future?

In Polish, the present tense can refer to future events inside time clauses introduced by kiedy/gdy. So Kiedy kelner przynosi jedzenie… literally uses present but means “When the waiter brings the food (later on)…” Using future (przyniesie) would be grammatically possible but less natural in a “when” clause.

Why is kelner in the nominative case here?

In the clause Kiedy kelner przynosi jedzenie, kelner is the subject (the one doing the action “brings”), so it takes the nominative case. Polish subjects are normally nominative.

Which case is jedzenie, and how can I tell?

Jedzenie is in the accusative singular, serving as the direct object of przynosi (“he brings the food”). For neuter nouns like jedzenie, the nominative and accusative forms are identical, so you recognize it by its role (object of the verb).