Vlastník objektu prokáže totožnost občanským průkazem.

Because vlastník usually takes the genitive to show what someone owns.

• vlastník = owner
• objektu = of the building / of the premises / of the object

So vlastník objektu literally means owner of the object/building.

This is similar to English the owner of the house, where English uses of and Czech often uses the genitive case instead.

Totožnost is the direct object of prokáže, so it is in the accusative. But for this noun, the accusative singular looks the same as the nominative singular.

• nominative: totožnost
• accusative: totožnost

That is normal for many Czech feminine nouns ending in -ost.

Because it is in the instrumental case, which is often used for the means or instrument by which something is done.

So:

• občanský průkaz = identity card / ID card
• občanským průkazem = with an identity card, by means of an identity card

In this sentence, it tells you how the person proves their identity.

Grammatically, it looks like a present-tense form, but because prokázat is a perfective verb, its present forms usually have future meaning.

So prokáže means something like:

• will prove
• in formal instructions or regulations, often shall prove

This is very common in Czech:

• imperfective verb present = true present
• perfective verb present form = future meaning

For comparison:

• prokazuje = is proving / proves regularly
• prokáže = will prove / shall prove

Because prokázat and dokázat are not the same in this context.

• prokázat totožnost = to prove one’s identity
• dokázat more often means to manage, to succeed in, or to prove in a more general sense

With totožnost, the normal expression is prokázat totožnost. It is a standard collocation, especially in official and legal language.

It could, but Czech often leaves out possessive words like svůj / svou when the meaning is obvious.

So both are possible:

• prokáže totožnost
• prokáže svou totožnost

The version without svou is more compact and still perfectly natural, especially in formal language. The possessive is understood from context: the owner is proving their own identity.

Not exactly. In everyday English, object sounds strange here, but in Czech administrative or legal language, objekt often means something like:

• building
• premises
• facility
• structure

So vlastník objektu is usually better understood as the owner of the building/premises rather than owner of the object in the everyday English sense.

Yes, very formal. It sounds like something from:

• regulations
• instructions
• administrative text
• legal wording

Clues that make it formal:

• vlastník instead of a more everyday word like majitel
• prokáže totožnost as an official phrase
• the concise, impersonal style

A more everyday sentence might be phrased differently, depending on context.

Yes, Czech word order is flexible, but this version is the most neutral and official-sounding.

Current order:

• Vlastník objektu = subject
• prokáže = verb
• totožnost = object
• občanským průkazem = means/instrument

You could move parts around for emphasis, but in a formal instruction this order is very natural and clear.

For example, Občanským průkazem prokáže vlastník objektu totožnost is grammatically possible, but it sounds more marked and less neutral.

They are:

• vlastník = owner
• objekt = building, premises, object
• prokázat = to prove, demonstrate
• totožnost = identity
• občanský průkaz = identity card / ID card

The sentence uses these inflected forms:

• objektu = genitive singular of objekt
• prokáže = 3rd person singular of prokázat
• občanským průkazem = instrumental singular of občanský průkaz

Because Czech does not have articles like English the and a/an.

So vlastník objektu can mean:

• the owner of the building
• an owner of a building

Which one is meant depends on context. In a sentence like this, especially in official language, it is often understood as the owner of the premises/building relevant to the situation.

Sometimes yes, but vlastník is more precise and more legal/formal.

• vlastník = legal owner
• majitel = owner/holder in a broader, often less technical sense

In official or legal text, vlastník is usually preferred because it sounds more exact.