čo (Referring to a Whole Clause)

Which, Referring to a Whole Clause

Level 4

Meškal, čo ma nahnevalo. (He was late, which annoyed me.) Čo refers to the whole fact that he was late.

How It Works

Commenting on a whole clause. English uses which to comment on everything just said: He was late, which annoyed me. Slovak uses čo:

  • Meškal, čo ma nahnevalo. (He was late, which annoyed me.)
  • Vyhrali, čo nikto nečakal. (They won, which nobody expected.)

Not ktorý. Ktorý agrees with a noun, so it can only point to a noun. When there is no noun, only a whole event, use čo.

Čo changes case. Čo takes the case that its own verb or preposition needs, using the forms of čo:

  • čo (nominative / accusative): Meškal, čo ma nahnevalo. Vyhrali, čo nikto nečakal.
  • čoho (genitive): Neprišiel, čoho som sa bála. (báť sa + genitive; see verbs with the genitive)
  • čomu (dative): Vraj sa sťahuje do Ameriky, čomu neverím.
  • o čom (locative): Presťahovali sa, o čom som vôbec nevedel.
  • čím (instrumental): Nezavolal, čím ma sklamal.
  • za čo (preposition + accusative): Pomohol mi, za čo som mu vďačný.

When čo is the subject, a past-tense verb is neuter: čo ma nahnevalo, čo ma prekvapilo.

Comma and position. This čo clause always comes after the clause it comments on, with a comma before it. A similar idea can be said with a + to (and that), written without a comma: Meškal a to ma nahnevalo. Pričom can also comment on a whole clause, but čo is the most common choice.

Examples (6)

  1. Meškal, čo ma nahnevalo.

    He was late, which annoyed me.

    Word by Word: He-was-late, what me annoyed.

    Čo is the subject, so the verb nahnevalo is neuter.

  2. Vyhrali, čo nikto nečakal.

    They won, which nobody expected.

    Word by Word: They-won, what nobody not-expected.

  3. Nezavolal, čím ma sklamal.

    He didn't call, which disappointed me.

    Word by Word: Not-he-called, by-what me he-disappointed.

    Čím is instrumental: he disappointed me by not calling.

  4. Vraj sa sťahuje do Ameriky, čomu neverím.

    He's supposedly moving to America, which I don't believe.

    Word by Word: Supposedly self moves to America, to-what not-I-believe.

    Veriť takes the dative, so čo becomes čomu.

  5. Presťahovali sa, o čom som vôbec nevedel.

    They moved, which I didn't know anything about.

    Word by Word: They-moved self, about what I-have at-all not-known.

  6. Pomohol mi, za čo som mu vďačný.

    He helped me, for which I'm grateful.

    Word by Word: He-helped to-me, for what I-am to-him grateful.

Common Mistakes

  • Using ktorý to refer to a whole clause.

    Meškal, ktoré ma nahnevalo.
    Meškal, čo ma nahnevalo.

    Ktorý needs a noun to agree with. To refer to the whole fact, use čo.

  • Keeping čo in the nominative when the verb needs another case.

    Neprišiel, čo som sa bála.
    Neprišiel, čoho som sa bála.

    Báť sa takes the genitive, so čo becomes čoho.

  • Using the Czech word což.

    Meškal, což ma nahnevalo.
    Meškal, čo ma nahnevalo.

    Což is Czech. Slovak uses čo.

How It Connects

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

čo (Referring to a Whole Clause)Level 4Which, Referring to a Whole Clause

Learn This First

Before Which, Referring to a Whole Clause, learn Relative čo After všetko and niečo. čo can also refer back to a whole clause.

Words in This Pattern