Το παζάρι είναι ανοιχτό σήμερα.

• Το = the
• παζάρι = market, bazaar, or sometimes street market
• είναι = is
• ανοιχτό = open
• σήμερα = today

So the sentence is literally: The market is open today.

Because παζάρι is a neuter noun in Greek.

Greek nouns have grammatical gender:

• ο for masculine
• η for feminine
• το for neuter

Since παζάρι is neuter singular, it takes:

• το παζάρι

This also affects the form of adjectives used with it.

Ανοιχτό is the neuter singular form of the adjective open.

It matches παζάρι, which is also neuter singular.

Compare:

• ο δρόμος είναι ανοιχτός = the road is open
• η πόρτα είναι ανοιχτή = the door is open
• το παζάρι είναι ανοιχτό = the market is open

So the ending changes to agree with the noun’s gender and number.

Είναι is the present-tense form of to be.

In Modern Greek, είναι is used for:

• he is
• she is
• it is
• they are
• and also the formal you are

In this sentence, it means is:

• Το παζάρι είναι ανοιχτό = The market is open

Not always exactly.

Παζάρι often suggests:

• a bazaar
• an open-air market
• a street market
• sometimes a place associated with bargaining

Depending on context, it can be translated simply as market, but it can feel a bit more specific than the general English word.

Yes.

In Greek, ανοιχτός / ανοιχτή / ανοιχτό can mean:

• physically open: The door is open
• open for business: The shop is open
• more abstract meanings too, depending on context

So in this sentence, Το παζάρι είναι ανοιχτό σήμερα, it most naturally means the market is operating / open for business today.

Yes. Greek word order is more flexible than English.

The neutral, straightforward order is:

• Το παζάρι είναι ανοιχτό σήμερα

But you could also hear:

• Σήμερα το παζάρι είναι ανοιχτό = Today the market is open
• Το παζάρι σήμερα είναι ανοιχτό

These versions are all possible, but the emphasis changes slightly. Putting σήμερα earlier gives more focus to today.

In a full standard sentence like this, είναι is normally included.

So:

• Το παζάρι είναι ανοιχτό σήμερα is the normal complete sentence.

However, in signs, notices, headlines, or very informal shortened language, Greek may omit it:

• Το παζάρι ανοιχτό σήμερα
• Ανοιχτό σήμερα

That is more like a shorthand style, not the full neutral sentence pattern learners should usually start with.

Both mean open.

• ανοιχτό is very common in everyday Modern Greek
• ανοικτό is also correct and may sound a bit more formal or conservative in some contexts

So you may see either:

• Το παζάρι είναι ανοιχτό σήμερα
• Το παζάρι είναι ανοικτό σήμερα

Both are acceptable.

Because Greek does not need a preposition here.

Σήμερα is an adverb meaning today, so it directly modifies the sentence:

• είναι ανοιχτό σήμερα = is open today

English also does this:

• It is open today

So there is no missing word; Greek structure is normal here.

A simple pronunciation guide is:

To pa-ZA-ri EE-ne a-nih-TO SEE-me-ra

More roughly:

• Το = to
• παζάρι = pa-ZA-ri
• είναι = EE-ne
• ανοιχτό = a-nih-TO
• σήμερα = SEE-me-ra

A few notes:

• The stressed syllables are ZA, EE, TO, and SEE
• Greek χ in ανοιχτό is not an English k sound; it is a throaty sound, like the ch in German Bach or Scottish loch

The accent marks show which syllable is stressed.

In this sentence:

• παζάρι → stress on ζά
• είναι → stress on εί
• ανοιχτό → stress on τό
• σήμερα → stress on σή

Stress matters in Greek pronunciation, so the accents are important for learners.

Usually yes, if they mean the market in a normal sentence.

• Το παζάρι είναι ανοιχτό σήμερα = The market is open today

If you remove the article:

• Παζάρι είναι ανοιχτό σήμερα

that sounds less natural as a basic standalone sentence. Greek often uses the definite article where English does too, and sometimes even more often than English.

So for a normal statement, το is the expected choice.