O estudante vai estudar português na casa dele.

O is the masculine singular definite article, meaning the.

So:

• o estudante = the student
• um estudante = a student
• estudante by itself can sometimes appear in headlines, labels, or more general contexts, but in a normal sentence you usually use an article when you mean a specific person.

A useful detail: estudante is a noun that can refer to either a male or female student, and the article tells you the gender here:

• o estudante = the male student
• a estudante = the female student

This is a very common Portuguese structure:

• ir + infinitive = to be going to do something

So:

• vai estudar = is going to study

Here:

• vai is the present tense of ir (to go)
• estudar is the infinitive (to study)

This structure is one of the main ways to talk about the near future in Brazilian Portuguese.

Examples:

• Eu vou estudar. = I’m going to study.
• Ela vai trabalhar. = She’s going to work.
• Nós vamos sair. = We’re going to leave/go out.

In this sentence, vai estudar normally just means is going to study.

Even though vai literally comes from to go, the combination ir + infinitive works like a future construction, not necessarily a literal movement verb.

So in most contexts:

• O estudante vai estudar português. = The student is going to study Portuguese.

If you specifically wanted to emphasize movement somewhere in order to study, Portuguese would usually make that clearer with location or another structure.

In Portuguese, names of languages are usually not capitalized unless they begin a sentence.

So:

• português = Portuguese
• inglês = English
• espanhol = Spanish

This is different from English, where language names are capitalized.

Examples:

• Eu falo português e inglês.
• Ela estuda espanhol.

But at the beginning of a sentence:

• Português é uma língua românica.

Because na is a contraction:

• em + a = na

So:

• na casa = in the house / at the house / at home depending on context

Other common contractions:

• em + o = no
• em + os = nos
• em + as = nas

Examples:

• no carro = in the car
• na escola = at/in the school
• nos livros = in the books
• nas cidades = in the cities

These contractions are standard and very common.

Literally, na casa dele means in/at his house.

But Portuguese often uses casa in ways that English uses home, especially when talking about someone’s own place.

So depending on context:

• na casa dele can mean at his house
• or more naturally in English, at his home / at home

This is very common:

• Estou em casa. = I’m at home.
• Vou para casa. = I’m going home.

Both can relate to possession, but dele is often used in Brazilian Portuguese to make things clearer.

• dele = his
• dela = her
• seu/sua can mean his, her, your, or even their depending on context

Because seu/sua can be ambiguous, Brazilians often prefer:

• a casa dele = his house
• a casa dela = her house

Instead of:

• a sua casa

which could mean his house, her house, or your house, depending on context.

So na casa dele is a very natural Brazilian Portuguese way to say at his house.

Dele is basically de + ele and works as a possessive expression meaning of him / his.

Examples:

• o carro dele = his car
• a irmã dele = his sister
• os amigos dele = his friends

Notice something important: dele itself does not change to match the gender of the thing possessed.

So you say:

• a casa dele = his house
• o livro dele = his book

The noun changes article/gender as usual, but dele stays dele.

Compare:

• dele = his
• dela = her

After a verb like estudar, the language name often appears without an article.

So:

• estudar português = to study Portuguese
• falar inglês = to speak English
• aprender espanhol = to learn Spanish

That is the most normal pattern.

Sometimes Portuguese can use articles with language names in certain contexts, but here the article is not needed.

From this sentence alone, dele most naturally refers to the student, so the usual reading is:

• The student is going to study Portuguese at his house/home.

However, grammatically, context is what fully confirms it. In a larger conversation, dele could theoretically refer to another male person already mentioned.

For example, if a conversation had already introduced another man, na casa dele might refer to that other person’s house.

But in an isolated sentence like this, learners should assume dele refers to o estudante.

Yes. That would use the simple future:

• O estudante estudará português. = The student will study Portuguese.

But in everyday Brazilian Portuguese, ir + infinitive is usually more common and more natural in speech:

• O estudante vai estudar português.

Both are correct, but they feel a little different:

• vai estudar = very common, conversational, natural
• estudará = correct, sometimes a bit more formal or written

Estudante is pronounced roughly like:

• eh-stoo-DAHN-chee in Brazilian Portuguese

The ending -ante is common in words that come from participial or agent-type formations, and many of these nouns are the same form for masculine and feminine.

So:

• o estudante = the male student
• a estudante = the female student

This is why the noun itself does not change to estudanto or estudanta. The article shows the gender.

Other nouns with this pattern include:

• o/a gerente = the manager
• o/a cliente = the client
• o/a artista = the artist

The given order is the most neutral and natural:

• O estudante vai estudar português na casa dele.

But Portuguese does allow some flexibility, especially with adverbial phrases like location.

For example:

• O estudante vai estudar na casa dele.
• Na casa dele, o estudante vai estudar português.

These are possible, but the original version is the most straightforward for a learner.

A good rule: start with the neutral order first:

• subject + verb phrase + object + place

So here:

• O estudante
  • vai estudar
    • português
      • na casa dele