Infinitive (Neurčitek)

The infinitive in Czech is the basic, unconjugated form of the verb.
It corresponds to the English “to + verb” form (e.g., to work, to eat).


Mood:

  • The infinitive does not express mood directly. It is a non-finite verb form.

Aspect:

  • Every infinitive is either imperfective (ongoing, repeated) or perfective (single, completed).
    • Imperfective: pracovat (to work – process)
    • Perfective: udělat (to do – completed)

Voice:

  • Usually active, but can appear in passive constructions.

Formation

Most Czech infinitives end in -t or -ci.

  • The common ending is -t: pracovat (to work), psát (to write).
  • Some verbs end in -ci (archaic or irregular forms): nésti (to carry), jíti (to go).
  • Modern Czech usually simplifies -ti / -ci endings to -t.

Usage

  1. After modal verbs

    • Chci pracovat. (I want to work.)
    • Musím jít. (I must go.)
  2. Purpose or intention

    • Jdu spát. (I am going to sleep.)
    • Učí se číst. (He is learning to read.)
  3. Commands in written instructions

    • Nezapomenout zamknout dveře. (Don’t forget to lock the door.)
  4. As a noun-like expression

    • Kouřit je nezdravé. (Smoking is unhealthy.)

Examples

  • Imperfective: Rád číst knihy. (I like to read books.)
  • Perfective: Potřebuji napsat dopis. (I need to write a letter.)

Notes

  • Infinitives are the dictionary form of Czech verbs.
  • They are used in conjugation tables to show the base verb.
  • The distinction between imperfective vs perfective is crucial for meaning.

Common Expressions

Expression Example
chtít + infinitive (to want) Chci jít domů. (I want to go home.)
muset + infinitive (must) Musím pracovat. (I must work.)
umět + infinitive (can/know how) Umím číst česky. (I can read Czech.)
rád + infinitive (like to) Rád hraju fotbal. (I like to play football.)

Irregular Verbs

Some older forms still appear in literature:

  • nést (to carry) → archaic infinitive nésti
  • jít (to go) → archaic infinitive jíti

In modern usage, these are usually shortened (nést, jít).


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