In English, the object of a verb has no visible case: "I see him", "I help him", "I trust him" — the same form him every time. In Czech, the verb decides which of the seven cases its object must wear, and that decision is not predictable from the English meaning. This page is the map of the whole system: it shows that a verb's case is a built-in property called its government (Czech rekce or vazba), and that you must store that property in memory the way you store a noun's gender.
What "government" means
Government (Czech rekce, also valence "valency") is the grammatical pull a verb exerts on the words around it. Just as a preposition forces a case (do always takes the genitive, s always the instrumental), a verb forces a case on its object. The verb vidět "to see" demands the accusative; bát se "to fear" demands the genitive; pomáhat "to help" demands the dative; stát se "to become" demands the instrumental. None of this can be guessed from English, because English flattens all objects into one shape.
The default: accusative
The majority of plain transitive verbs take the accusative — the case of the direct object. If a verb has a clear "thing that the action is done to", the accusative is the safe first guess.
Vidíš ten kostel? Hned vedle něj bydlím.
Do you see that church? I live right next to it.
Celé odpoledne čtu tu samou knihu a pořád nevím, jak to dopadne.
I've been reading the same book all afternoon and I still don't know how it ends.
Here kostel and knihu are accusative direct objects. This is the pattern English speakers expect, so it rarely causes trouble. The trouble starts with the other three cases.
When the object is genitive, dative, or instrumental
A large group of everyday verbs governs a case other than the accusative. The table below previews one verb for each governed case — memorize this shape first, then meet the fuller lists on the dedicated pages.
| Case | Verb | Example | Meaning |
|---|---|---|---|
| Accusative | vidět | Vidím psa. | I see the dog. |
| Genitive | bát se | Bojím se tmy. | I'm afraid of the dark. |
| Dative | pomáhat | Pomáhám matce. | I'm helping my mother. |
| Instrumental | stát se | Stal se lékařem. | He became a doctor. |
| Preposition + case | čekat na | Čekám na autobus. | I'm waiting for the bus. |
Notice that the English translation gives you no warning at all. "I'm afraid of the dark" has an of, which at least hints at the genitive, but "I help my mother" and "He became a doctor" look like ordinary direct objects in English and are not.
Bojím se velkých psů, hlavně když nejsou na vodítku.
I'm afraid of big dogs, especially when they're not on a leash.
Nakonec se z něj stal docela dobrý učitel.
In the end he turned into a pretty good teacher.
The dative trap: help, understand, trust, believe
This is the single most important warning on the page. Three of the most common Czech verbs that English speakers want to treat as "normal direct-object verbs" actually govern the dative: pomáhat "to help", rozumět "to understand", and věřit "to trust / believe". The pronoun "him" is therefore mu (dative), never ho (accusative).
Můžeš mi pomoct s tím kufrem? Je strašně těžký.
Can you help me with this suitcase? It's terribly heavy.
Mluv pomaleji, vůbec ti nerozumím.
Speak more slowly, I don't understand you at all.
Věřím ti, ale ostatní budeš muset přesvědčit sám.
I trust you, but you'll have to convince the others yourself.
In all three, the object is dative (mi, ti). To an English ear "help him / understand him / trust him" feel identical to "see him", which is why this is one of the most persistent beginner errors. Treat these three verbs as a set and drill them as "+ dat".
Verbs that need a preposition
Some verbs do not govern a bare case at all; they require a preposition, which then brings its own case. čekat na "to wait for" takes na + accusative; myslet na "to think about" the same; starat se o "to take care of" takes o + accusative; bát se o "to worry about" takes o + accusative (distinct from plain bát se + genitive!). The preposition is part of the verb's identity — drop it and the sentence is broken.
Čekám na tebe už půl hodiny, kde jsi?
I've been waiting for you for half an hour, where are you?
Celý víkend se staráme o babiččinu zahradu.
We spend the whole weekend taking care of grandma's garden.
Government does not change with aspect or prefix
A reassuring fact: when you swap a verb for its aspect partner, or add a prefix, the governed case usually stays the same. psát and its perfective napsat both take the accusative; pomáhat and perfective pomoci both take the dative. So once you have learned the case for one member of a pair, you have it for both.
Napiš mi zprávu, až dorazíš domů.
Write me a message once you get home.
Common Mistakes
❌ Pomáhám ho s úkolem.
Incorrect — pomáhat takes the dative, so 'him' must be the dative mu, not the accusative ho.
✅ Pomáhám mu s úkolem.
I'm helping him with his homework.
❌ Rozumím ho dobře.
Incorrect — rozumět also governs the dative; the accusative ho is wrong.
✅ Rozumím mu dobře.
I understand him well.
❌ Čekám tě před kinem.
Incorrect — čekat needs the preposition na plus the accusative; a bare object is ungrammatical.
✅ Čekám na tebe před kinem.
I'm waiting for you in front of the cinema.
❌ Bojím se tma.
Incorrect — bát se governs the genitive, so 'the dark' must be the genitive tmy, not the nominative tma.
✅ Bojím se tmy.
I'm afraid of the dark.
❌ Stal se učitel na gymnáziu.
Incorrect — stát se 'to become' governs the instrumental; the nominative učitel is wrong.
✅ Stal se učitelem na gymnáziu.
He became a teacher at a grammar school.
Key Takeaways
- Every Czech verb fixes the case of its object; that case is a lexical property, learned with the verb.
- Accusative is the default for plain transitive verbs, but a large minority govern the genitive, dative, or instrumental.
- pomáhat, rozumět, věřit all take the dative — "help/understand/trust him" is mu, never ho.
- Some verbs require a preposition (čekat na, starat se o); the preposition is part of the verb.
- Aspect partners and prefixed forms keep the same government, so you learn each verb's case only once.
Now practice Czech
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Start learning Czech→Related Topics
- Verbs Governing the GenitiveB2 — A core set of everyday Czech verbs — fear, asking, noticing, reaching, riddance — whose object stands in the genitive, not the accusative English speakers expect.
- Verbs Governing the DativeA2 — The dative is one fixed government class in the verb-valency system: a set of verbs whose object is lexically required to stand in the dative, not the accusative.
- Verbs Governing the InstrumentalB2 — Verbs whose complement stands in the instrumental — becoming and remaining a role (stát se lékařem), occupying oneself with something (zabývat se), and moving, waving, boasting, despising, and suffering.
- Verbs with Prepositional ObjectsB2 — Verbs that reach their object through a fixed preposition plus a fixed case — čekat na, starat se o, těšit se na, mluvit o, záležet na — where the Czech preposition almost never matches the English one.
- Transitive and Intransitive VerbsA2 — Which Czech verbs take a direct object — and why that object is not always in the accusative the way English would suggest.