English

Że, bo, jeśli, kiedy: two thoughts in one sentence

Four conjunctions sew short phrases into connected speech: że — that, bo — because, jeśli — if, kiedy — when. That is enough for almost the whole story of your life. For example: “Mówią, że będzie śnieg” — They say it will snow. A rule from the Polish course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

Four conjunctions sew short phrases into connected speech: że — that, bo — because, jeśli — if, kiedy — when. That is enough for almost the whole story of your life.

The comma before the conjunction is obligatory always — stricter than English: Wiem, że to prawda, Zadzwoń, bo mam wiadomość. A missing comma strikes a Pole at once.

The subordinate clause does not move the verb: it stands where it would stand in a separate sentence. Mówią, że będzie śnieg — they say it will snow. No shifts, no inversions.

Two small things at the end. Kiedy — when, once; gdy — whenever: Kiedy przyjadę, zadzwonię against Gdy pada śnieg, stoją korki. And after kiedy the future is spoken of in the future tense: Kiedy przyjadę, zadzwonię — when I come, I will call.

Table

Że, bo, jeśli, kiedy: two thoughts in one sentence
ConjunctionMeaningExample
żethatMówią, że będzie deszcz
bobecauseJestem w domu, bo jest zimno
jeśliifJeśli masz czas, zadzwoń
kiedywhen (once)Kiedy przyjadę, zadzwonię
gdywhen (every time)Gdy pada śnieg, stoją korki
therefore (not a conjunction)dlategoPada śnieg, dlatego stoją korki

By example

  • Mówią, że będzie śnieg
    They say it will snow
  • Choinka stoi w domu, bo święta blisko
    The tree stands in the house because the holiday is near
  • Jeśli jest ładna pogoda, idziemy na spacer
    If the weather is nice, we go for a walk

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

Że, bo, jeśli, kiedy: how does it work in Polish?

Four conjunctions sew short phrases into connected speech: że — that, bo — because, jeśli — if, kiedy — when. That is enough for almost the whole story of your life.

What does it look like in a Polish example sentence?

“Mówią, że będzie śnieg” — They say it will snow. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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Test the rule on examplesPractice