Odliczanie zaczyna się teraz.

Odliczanie is a noun meaning countdown.

It comes from the verb odliczać / odliczyć, which means to count off or to count down depending on context. In this sentence, odliczanie is a verbal noun: a noun built from a verb, similar to English counting in some contexts.

Grammatically, odliczanie is:

• singular
• neuter
• in the nominative case here, because it is the subject of the sentence

So the structure is basically:

Odliczanie = the countdown
zaczyna się = is beginning / begins
teraz = now

Because the subject, odliczanie, is singular.

The verb zaczynać się means to begin / to start, and here it has to agree with the subject:

• odliczanie zaczyna się = the countdown begins
• if the subject were plural, you would use zaczynają się

For example:

• Zawody zaczynają się teraz. = The competitions are starting now.

Since odliczanie is one thing, Polish uses zaczyna się.

Się is a very common Polish particle. In this sentence, it is part of the expression zaczynać się, which means to begin or to start.

So:

• zaczynać = to start something
• zaczynać się = to begin / to start

Compare:

• Zaczynam lekcję. = I’m starting the lesson.
  Here, someone starts something.
• Lekcja zaczyna się. = The lesson is starting.
  Here, the lesson itself begins.

English learners often want to translate się as oneself, but that does not work well here. In many sentences, się helps create a kind of intransitive or middle-style meaning. The most natural translation is simply begins / is starting.

No, not in standard Polish for this meaning.

Odliczanie zaczyna się teraz is the correct form for The countdown starts now.

If you remove się, zaczyna normally needs a direct object, because it means starts something:

• Operator zaczyna odliczanie teraz. = The operator starts the countdown now.

But when the countdown itself is the thing that begins, Polish uses:

• Odliczanie zaczyna się teraz.

So się is necessary here.

Yes, the word order can change.

Polish word order is more flexible than English because case endings do a lot of the grammatical work. The sentence:

Odliczanie zaczyna się teraz.

is very natural and neutral. It puts teraz at the end, which often gives a slight emphasis to now.

You could also say:

• Teraz zaczyna się odliczanie.
• Zaczyna się teraz odliczanie. — possible, but less neutral in many contexts

The most common versions are:

• Odliczanie zaczyna się teraz.
• Teraz zaczyna się odliczanie.

The difference is mostly about emphasis:

• Odliczanie zaczyna się teraz. = focus on now
• Teraz zaczyna się odliczanie. = focus on now from the start, often a bit more dramatic

Yes, zaczyna się is present tense.

In Polish, the present tense of an imperfective verb can describe:

• something happening now
• something habitual
• something generally true

Here, zaczyna się teraz clearly means something happening right now, because of teraz.

So:

• zaczyna się = begins / is beginning / is starting
• teraz tells you it is happening now

English often chooses between starts and is starting, but Polish does not need that exact distinction here.

Polish verbs often come in aspect pairs:

• zaczynać się = imperfective
• zacząć się = perfective

In the present tense:

• zaczyna się means is starting / starts
• zacznie się is actually future, because perfective verbs do not have a true present meaning in the same way

So:

• Odliczanie zaczyna się teraz. = The countdown is starting now.
• Odliczanie zacznie się teraz. would usually sound wrong or at least very odd, because zacznie się means will start, and teraz means now

If you want a completed past event:

• Odliczanie zaczęło się. = The countdown started.

In this sentence, it is best understood as countdown.

Because odliczanie is a verbal noun, it can sometimes feel a bit like counting down as a process. But in many contexts, especially ones like launches, events, timers, and announcements, it works just like the English noun countdown.

So:

• Odliczanie zaczyna się teraz. = The countdown starts now.

A very literal English gloss might be:

• Counting down begins now.

But that is less natural in English than The countdown starts now.

A rough pronunciation guide is:

od-lee-CHA-nyeh za-CHY-na shyeh TE-ras

A few helpful points:

• cz sounds like ch in chop
• się is pronounced roughly like shyeh (with a nasal element in careful speech, but learners often start with something close to shye)
• rz in teraz here sounds like the zh sound in measure, though in everyday learning materials it is often simplified for beginners

Stress in Polish usually falls on the second-to-last syllable:

• odliCZAnie
• zaCZYna
• TEraz

Yes, you could say:

Odliczanie rozpoczyna się teraz.

That also means The countdown starts now.

The difference is mostly in style:

• zaczyna się is very common, neutral, everyday
• rozpoczyna się can sound a bit more formal, official, or ceremonial

So if this were an announcement, both could work:

• Odliczanie zaczyna się teraz. — natural and direct
• Odliczanie rozpoczyna się teraz. — slightly more formal

Teraz is not a noun, so it is not in a case like nominative, accusative, and so on.

It is an adverb, meaning now.

Adverbs do not change for case, gender, or number. That makes teraz simple to use:

• teraz = now

Examples:

• Jestem teraz zajęty. = I’m busy now.
• Co robisz teraz? = What are you doing now?

Yes, absolutely.

Odliczanie zaczyna się teraz. sounds natural in contexts like:

• a launch or liftoff
• a competition
• a game show
• a timed event
• a dramatic announcement

It has a slightly official or dramatic tone because odliczanie is often used in staged or high-tension moments, but the sentence itself is perfectly normal.

A Polish speaker might also say:

• Zaczynamy odliczanie. = We’re starting the countdown.
• Teraz zaczyna się odliczanie. = Now the countdown begins.

All of these are natural; they just frame the situation a little differently.