Policie je tady.

Because policie is grammatically singular in Czech.

Even though English usually says the police are here, Czech treats policie as a singular noun, so it takes the singular verb je = is.

• Policie je tady. = The police are here.
• Literally, word-for-word, it is closer to Police is here, but that is just how Czech grammar works.

It is singular.

In Czech, policie is a singular noun meaning the police as an institution or body. It is not the plural of policista.

Compare:

• policie = the police
• policista = a male police officer
• policistka = a female police officer
• policisté = male/mixed police officers
• policistky = female police officers

So Policie je tady does not mean that one officer is here. It means the police are here.

It can mean both, depending on context.

Most often, policie refers to:

• the police as an institution
• the police as a group present at a place

So in Policie je tady, it usually means something like:

• The police are here
• The police have arrived

If you want to talk about an individual officer, Czech would normally use policista or policistka instead.

It is in the nominative singular.

That is the normal case for the subject of a sentence, and here policie is the subject:

• Policie = subject
• je = verb
• tady = adverb meaning here

So the structure is basically:

• Policie = the police
• je = is
• tady = here

Because Czech has no articles.

Czech does not have separate words for a, an, or the. Whether something is understood as definite or indefinite depends on context.

So policie can mean:

• the police
• sometimes just police, depending on context

In this sentence, English will usually translate it as the police are here.

Tady means here.

It is a very common and natural everyday word. In this sentence, it shows location:

• Policie je tady. = The police are here.

Other related words:

• zde = here, but more formal or written
• tu = here, also possible in many contexts
• sem = to here, indicating movement toward this place

So:

• je tady = is here
• jde sem = is coming here

They both mean here, but the tone is different.

• tady = common, neutral, everyday speech
• zde = more formal, written, official, or stiff in normal conversation

So Policie je tady sounds natural in everyday speech.

If you say Policie je zde, it is still correct, but it sounds more formal or official.

Yes, and it is correct, but the emphasis changes.

• Policie je tady. → focuses more on the police
• Tady je policie. → focuses more on here, or can sound like Here is the police

Czech word order is flexible, and changing the order often changes what is being emphasized rather than the basic meaning.

So both are possible, but Policie je tady is a very straightforward neutral sentence.

A simple English-friendly guide is:

PO-li-tsi-ye ye TA-dy

A few details:

• je is pronounced like ye
• the cie in policie sounds roughly like tsi-ye
• y in tady is not exactly the English ee, but for a beginner, TA-dy is a useful approximation

Also, Czech stress usually falls on the first syllable of each word:

• POlicie
• JE
• TAdy

Policie is feminine singular.

Yes, gender matters in Czech because it affects agreement and declension in other contexts.

In this sentence, the main thing to notice is that it behaves as a singular noun, so it takes je.

In other sentences, its gender would affect adjectives and some past-tense forms. For example:

• státní policie = state police
  Here státní agrees with the feminine noun policie.

You do not see much gender marking in Policie je tady, but the noun does have grammatical gender.

You would not use policie for one officer.

Instead, say:

• Policista je tady. = A male police officer is here.
• Policistka je tady. = A female police officer is here.

If you mean several officers, you could say:

• Policisté jsou tady. = The police officers are here.

Notice that now the verb is jsou, because policisté is plural.

No. It is capitalized only because it is the first word of the sentence.

In the middle of a sentence, it would normally be lowercase:

• Myslím, že policie je tady.

It would only be capitalized in special cases, such as an official name.