Toto je veřejný úřad.

Because toto here means this as a standalone pronoun: This is ...

• Toto je veřejný úřad. = This is a public office.
• Tento veřejný úřad would mean this public office, where tento directly modifies the noun.

So:

• toto = this on its own
• tento úřad = this office

This is a very common pattern in Czech:

• Toto je dům. = This is a house.
• Tento dům je velký. = This house is big.

Je is the 3rd person singular form of the verb být = to be.

So here it means is:

• toto = this
• je = is
• veřejný úřad = public office

Very basic forms of být in the present tense are:

• jsem = I am
• jsi / jste = you are
• je = he/she/it is
• jsme = we are
• jsou = they are

Because the adjective has to agree with the noun it describes.

The noun úřad is:

• masculine
• singular
• nominative

So the adjective also takes the masculine singular nominative form:

• veřejný úřad

Compare:

• veřejný úřad = public office (masculine)
• veřejná škola = public school (feminine)
• veřejné místo = public place (neuter)

This kind of adjective agreement is one of the most important features of Czech grammar.

Úřad is masculine inanimate.

A few clues:

• It ends in a consonant, which often suggests a masculine noun in Czech.
• It refers to a thing/institution, not a living male being, so it is inanimate, not animate.

This matters because gender affects:

• adjective endings
• pronouns
• case endings

That is why you get veřejný úřad and not another adjective ending.

It is in the nominative case.

In a sentence like Toto je veřejný úřad, the noun after je is typically in the nominative in modern Czech when identifying what something is.

So:

• Toto = nominative
• veřejný úřad = nominative

A learner should recognize this as the basic dictionary form of the noun:

• úřad

Because Czech has no articles like English a, an, or the.

So Czech simply says:

• Toto je veřejný úřad.

Depending on context, that could be understood in English as:

• This is a public office.
• This is the public office.

English needs an article, but Czech does not.

Context tells you which meaning is intended.

Je is pronounced roughly like ye in English.

So not like English jee, and not with a hard j sound like in jam.

Examples:

• je ≈ ye
• Jana begins with a y sound too

This is because Czech j is pronounced like English y.

A rough English-friendly guide is:

veřejný ≈ veh-rzheh-nee

A few important points:

• v is like English v
• e is like e in bed, but cleaner and shorter
• ř is the famous Czech sound, something like a mix of r and zh
• ý is a long ee sound

The stress in Czech is almost always on the first syllable:

• VEřejný

Even though the stress is first, the long vowel ý at the end is still held longer.

A rough guide is:

úřad ≈ oo-rzhut or oo-rzhad

More carefully:

• ú = a long oo
• ř = the special Czech ř sound
• a = short a
• d at the end may sound slightly softer or less fully voiced than English d

Stress is on the first syllable:

• Úřad

The hardest part for most learners is ř.

Ř is a uniquely Czech sound. It is often described as a blend of:

• r
• and zh (like the s in measure)

You do not need to master it immediately to be understood.

At first, many learners approximate it with:

• r
• or zh
• or something in between

That is normal. Native speakers know this sound is difficult.

If you want a practical goal:

• first aim to recognize it
• then try to produce an r with friction
• perfection can come later

Because toto here is not an adjective describing úřad directly. It is a standalone pronoun meaning this.

The structure is more like:

• This is a public office.

In Czech, the standalone this is very often to or toto, which is neuter in form.

But if you attach this directly to the noun, then it must agree:

• tento úřad = this office
• tato budova = this building
• toto místo = this place

So:

• Toto je úřad. = This is an office.
• Tento úřad je veřejný. = This office is public.

Yes. To je veřejný úřad is very natural and common.

In everyday Czech:

• to = this/that/it in a general pointing sense
• toto = a more explicit or slightly more formal this

So both work:

• To je veřejný úřad.
• Toto je veřejný úřad.

In normal speech, to is often more common than toto.

Yes, Czech word order is more flexible than English, though the most neutral version here is:

• Toto je veřejný úřad.

You might also hear:

• Veřejný úřad je toto.
  This sounds marked or unusual, and would only fit a special context.

Because Czech uses case endings, word order often changes for emphasis rather than basic grammar. For a learner, the standard order is the best one to use first.

Not exactly.

Úřad usually refers to:

• an office as an institution
• a government office
• an administrative authority

It is not normally the same as an office room where someone works.

For example:

• pošta = post office
• kancelář = office room / office workspace
• úřad = official/government office, authority

So veřejný úřad suggests an official public institution, not just a room with desks.

It means the vowel is long.

So:

• u = short
• ú = long oo
• y / i are pronounced similarly in modern Czech, but
• ý / í are their long versions

In this sentence:

• úřad starts with a long ú
• veřejný ends with a long ý

Vowel length is important in Czech and can change meaning, so it is worth paying attention to.

It is understandable and grammatical, but in real life Czech often uses more specific names for institutions, such as:

• městský úřad = town hall / municipal office
• obecní úřad = municipal office
• státní úřad = state office
• finanční úřad = tax office

So veřejný úřad is fine as a learning example, especially for grammar, but native speakers often choose a more specific type of office in everyday use.