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B1 · Intermediate · Lesson 21
Relative clauses (który)
Join clauses with który — gender from the noun, case from its job.
który ('who / which / that') links two clauses. It takes gender and number from the noun it points back to, but its case from the role it plays inside its own clause — so the same noun can need który, którą or którego.
| Refers to | Subject | Object |
|---|---|---|
| masc. thing | który | który |
| masc. person/animal | który | którego |
| feminine | która | którą |
| neuter | które | które |
- •Step 1: match gender/number to the noun.
- •Step 2: choose the case from its job in the sub-clause.
Quick check
'the film that I like':
film is masculine inanimate → który.
który agrees with its noun in…
Gender and number; its case comes from its role.
Practice
Now produce the answers yourself — type them, choose the form, or build the sentence.
film, ___ lubię (masc. thing, object)
kobieta, ___ tu pracuje (fem. subject)
książka, ___ czytam (fem. object)
Say: This is the film that I like.
kolega, ___ znasz (masc. person, object)
What this lesson covered
Relative clauses let you join two ideas into one smoother sentence, and in Polish the connector is który. This lesson showed its two-part logic: który takes its gender and number from the noun it refers back to, but its case from the job it does inside its own clause. So “the man who helped me” is człowiek, który mi pomógł (masculine, subject), while “the book that I'm reading” is książka, którą czytam (feminine, object → którą). The forms który, która, które and którzy cover the possibilities. It sounds complex, but the recipe is reliable: match the noun for gender, then look at what the word does in its clause to pick the case. Mastering który is what lets you stop speaking in short, choppy sentences and start linking your thoughts the way fluent speakers do.