dvoje / troje

Collective Numerals Dvoje and Troje

Level 4

The collective numerals dvoje (two), troje (three), and oboje (both) are used to count nouns that only exist in the plural form, as well as items that naturally come in pairs or sets.

How It Works

Understanding how to use set numerals (souborové číslovky) like dvoje, troje, and oboje is essential for natural-sounding Czech, as they are highly frequent in everyday speech.

1. What they attach to:

  • Plural-only nouns: dvoje dveře (two doors), troje nůžky (three pairs of scissors), oboje kalhoty (both pairs of trousers).
  • Sets and pairs: dvoje boty (two pairs of shoes) vs. dvě boty (two individual shoes, e.g., a left and a right from different pairs).
  • Singular collective nouns: For singular nouns denoting masses or sets (hromadná jména), you use the singular forms of set numerals to denote batches or portions, such as dvoje prádlo (two batches of laundry) or oboje povlečení (both sets of bed linen).

2. Morphological rules and declension:
Unlike in some other Slavic languages, these numerals do not force the noun into the genitive case; instead, they act like adjectives and agree with the noun's case.

  • Nominative / Accusative: Use the short forms dvoje, troje, and oboje for all genders in the plural (e.g., Vidím dvoje dveře.). When modifying singular collective nouns, these forms function strictly as neuter (e.g., dvoje prádlo).
  • Oblique cases: They decline exactly like soft adjectives (pattern jarní). For plural nouns, the endings are Genitive/Locative: dvojích/trojích/obojích; Dative: dvojím/trojím/obojím; Instrumental: dvojími/trojími/obojími. For singular collective nouns, they take singular neuter endings (Genitive: dvojího, Dative: dvojímu, Locative/Instrumental: dvojím). Because of this, the visual distinction between sets (dvoje) and kinds (dvojí) completely disappears in all oblique cases.
  • Dual instrumental: When modifying paired body parts that retain dual endings (oči, uši, ruce, nohy), the numeral must take the dual instrumental ending -íma (e.g., s dvojíma očima, s obojíma ušima).

3. Crucial Distinctions and Related Numerals:

  • Dvoje vs. Dvojí: While generic numerals (druhové číslovky: dvojí, trojí, obojí) mean "kinds" or "types" (e.g., dvojí boty = two kinds of shoes, dvojí prádlo = two kinds of laundry), set numerals (souborové číslovky: dvoje, troje, oboje) strictly mean sets, pairs, or batches (e.g., dvoje prádlo = two batches of laundry). Dvoje is never used to mean "kinds".
  • One set: To say "one pair" or "one set", use the plural form jedny (e.g., jedny dveře, jedny boty), which declines like a hard pronoun. Unlike dvoje/troje/oboje, it must agree with neuter plural nouns (e.g., jedna vrata).
  • Higher numbers (4+): From four onwards, the suffix changes to -ery (čtvery, patery). In the nominative and accusative, they take short/nominal endings and must agree with neuter plural nouns (e.g., čtvery dveře [fem.] vs. čtvera vrata [neut.]). They decline like hard adjectives in the oblique cases (e.g., Genitive/Locative: čtverých, Dative: čtverým, Instrumental: čtverými).

Examples (5)

  1. Máme doma jenom dvoje nůžky.

    We only have two pairs of scissors at home.

    Word by Word: We-have at-home only two scissors.

    Nůžky (scissors) is a plural-only noun, so dvoje is required in the accusative case.

  2. Koupil jsem si troje nové kalhoty.

    I bought three new pairs of trousers.

    Word by Word: Bought I-am to-myself three new trousers.

    Kalhoty (trousers) is plural-only. Troje is used to count the number of items.

  3. Klíč se ztratil někde mezi dvojími dveřmi.

    The key got lost somewhere between the two doors.

    Word by Word: Key itself lost somewhere between two doors.

    Notice the instrumental case agreement (dvojími) after the preposition 'mezi'. It declines like a soft adjective.

  4. Potřebuju dvoje boty na zimu.

    I need two pairs of shoes for winter.

    Word by Word: I-need two shoes for winter.

    Boty is a regular noun, but using dvoje specifies that you mean two pairs, not two individual shoes.

  5. Mluvil o trojích různých brýlích.

    He spoke about three different pairs of glasses.

    Word by Word: He-spoke about three different glasses.

    The numeral declines into the locative case (trojích) to agree with the noun brýlích after the preposition 'o'.

Common Mistakes

  • Using regular cardinal numbers with plural-only nouns.

    Koupil jsem dvě kalhoty.
    Koupil jsem dvoje kalhoty.

    Because 'kalhoty' lacks a singular form, using 'dvě' is a glaring error to native speakers. You must use the collective numeral 'dvoje' for plural-only nouns.

  • Using 'dvojí' when you mean two doors.

    Different MeaningMáme dvojí dveře.
    Máme dvoje dveře.

    'Máme dvojí dveře' is correct, but it means you have two kinds of doors. If you simply want to say there are two doors, use 'dvoje'.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

dvoje / trojeLevel 4Collective Numerals Dvoje and Troje

Learn This First

To understand collective numerals like 'dvoje' and 'troje', learners first need a solid grasp of basic cardinal numerals (2, 3, 4) and their gender agreement. Additionally, understanding kind numerals (dvojí/trojí) helps clarify how these stems are used to count sets or items that naturally come in pairs or groups, such as plural-only nouns.

Words in This Pattern

dvojetroje