O ônibus vai parar na estação.

Because vai parar is a very common way to talk about the near future in Brazilian Portuguese.

• vai = goes / is going
• parar = to stop

Together, vai parar means is going to stop or simply will stop.

So the sentence is using the structure:

ir + infinitive = a future idea

Example:

• O ônibus vai parar na estação. = The bus is going to stop at the station.

Not really. On its own, vai is the verb ir and can mean goes / is going. But when it is followed by another verb in the infinitive, it usually creates a future meaning.

So here:

• vai
  • parar
• not goes stop
• but is going to stop

This is one of the most important patterns in everyday Portuguese.

Because after vai in this kind of future construction, the second verb stays in the infinitive.

So:

• vai parar
• vai chegar
• vai sair
• vai abrir

This works a lot like English:

• is going to stop
• is going to arrive
• is going to leave
• is going to open

You do not conjugate the second verb here.

Portuguese often uses the definite article where English might or might not use one.

Here, o ônibus means the bus. It sounds natural because the speaker is talking about a specific bus.

In Portuguese, using the article with a subject like this is very common:

• O ônibus vai parar...
• O trem chegou.
• A professora saiu.

Leaving out the article can sound less natural in many normal sentences.

na is a contraction:

• em
  • a = na

So:

• na estação = in the station / at the station

Portuguese very often contracts prepositions with articles.

Some common ones:

• em + o = no
• em + a = na
• de + o = do
• de + a = da
• a + a = à

In this sentence, na estação is the normal form. Saying em a estação would sound wrong in standard Portuguese.

Because Portuguese em covers several location ideas that English splits into in, at, and sometimes on.

So na estação can mean:

• in the station
• at the station

The exact English translation depends on context.

In this sentence, at the station is usually the most natural translation, because we are talking about where the bus will stop.

Yes. O ônibus parará na estação is grammatically correct and means the same thing.

But in everyday Brazilian Portuguese, people usually prefer vai parar over the simple future parará.

So:

• vai parar = more common in speech
• parará = correct, but often more formal or less conversational

That is why the sentence uses vai parar.

A helpful approximation is OH-nee-boos.

A few points:

• The stress is on the first syllable: Ô
• The accent mark in ô helps show that stressed vowel
• In Brazilian Portuguese, the vowels are usually clearer and shorter than in English

Syllables:

• ô-ni-bus

So try something like:

• Ô-ni-bus

A rough English-friendly approximation is es-ta-SOWN, but the ending is nasal, so it is not exactly like English sown.

Important details:

• ç sounds like s
• ão is a very common Portuguese nasal ending
• The stress is on the last syllable

So:

• es-ta-ÇÃO

If you are learning pronunciation, ão is worth practicing a lot because it appears in many common words.

Yes. estação can also mean season, as in summer season or rainy season.

Examples:

• estação de trem = train station
• estação do ano = season of the year

In this sentence, the context makes station the correct meaning, because a bus can stop at a station.

The given word order is the most neutral and natural one:

O ônibus vai parar na estação.

It follows a very common pattern:

• subject
  • verb phrase
    • place

You can move parts of the sentence for emphasis, but the original order is the best basic version for learners.

For example, a speaker might say:

• Na estação, o ônibus vai parar.

That is possible, but it sounds more marked or emphatic. The original sentence is the standard choice.

No. parar is a general verb meaning to stop.

It can be used for:

• a vehicle stopping
• a person stopping
• stopping an activity

Examples:

• O ônibus vai parar. = The bus is going to stop.
• Ela parou de falar. = She stopped talking.
• Pare! = Stop!

In your sentence, parar means that the bus will come to a stop at the station.