Measures With The Genitive

Level 2

In Polish, when you specify a quantity (like 'a liter', 'a glass', or 'a kilogram'), the substance itself must be in the genitive case. This is equivalent to the English word 'of'.

How It Works

This pattern is essential for shopping, cooking, and daily life. It follows two main rules:

  • The Substance Case: The substance being measured always takes the genitive. Use the genitive singular for uncountable things (like water or sugar) and the genitive plural for countable items (like apples or coins).
  • Masculine Units: A specific rule for masculine units of measurement (like litr, kilogram, metr) is that they usually take the -a ending in the genitive singular (e.g., litra, kilograma), unlike many other inanimate nouns that take -u.

Note that if you use a number like 5 or higher, the unit itself will also move into the genitive plural (e.g., pięć litrów), but the substance remains in the genitive regardless.

Examples (5)

  1. Poproszę szklankę soku.

    I'd like a glass of juice, please.

    Word by Word: I-will-request glass [of] juice.

    'Szklankę' is in the accusative (direct object), but 'soku' is in the genitive because it is the substance being measured.

  2. Kupuję kilogram jabłek.

    I am buying a kilogram of apples.

    Word by Word: I-buy kilogram [of] apples.

    'Jabłek' is the genitive plural of 'jabłka' (apples) because they are countable items being measured by weight.

  3. Daj mi kawałek chleba.

    Give me a piece of bread.

    Word by Word: Give me piece [of] bread.

    'Chleba' is the genitive singular of 'chleb' (bread).

  4. Potrzebuję litr wody.

    I need a liter of water.

    Word by Word: I-need liter [of] water.

    'Wody' is the genitive singular of 'woda' (water).

  5. Na stole jest butelka wina.

    There is a bottle of wine on the table.

    Word by Word: On table is bottle [of] wine.

    'Wina' is the genitive singular of 'wino' (wine).

Common Mistakes

  • Using the nominative case for the substance.

    butelka woda
    butelka wody

    Learners often forget to decline the substance. Even if the container is in the nominative, the substance must be genitive.

  • Using the wrong genitive ending for masculine units.

    pół litru
    pół litra

    Units of measurement like 'litr' or 'kilogram' almost always take the -a ending in the genitive singular, not -u.

  • Using the accusative for the substance.

    Piję szklankę wodę.
    Piję szklankę wody.

    While 'szklankę' is the direct object (accusative), the substance inside it must remain in the genitive.

How It Connects

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Measures With The GenitiveLevel 2

Learn This First

Learn Genitive Case before Measures With The Genitive.