A aluna é inteligente.

A is the definite article in Portuguese for a feminine singular noun. Here it means the.

So:

• a aluna = the female student

Portuguese often uses the definite article in places where English might or might not use the, so seeing a before a noun like aluna is very normal.

Aluna is the feminine form, and aluno is the masculine form.

• o aluno = the male student
• a aluna = the female student

Portuguese nouns often change form depending on gender, and this is a very common pattern:

• -o often masculine
• -a often feminine

Because aluna is a feminine noun, the article has to match it.

In Portuguese, articles usually agree with the noun in gender and number:

• o aluno = the male student
• a aluna = the female student
• os alunos = the male students / mixed group of students
• as alunas = the female students

This matching is called agreement.

É is the 3rd person singular of the verb ser, which means to be.

So:

• ela é = she is
• a aluna é = the student is

The accent matters because:

• é = is
• e = and

So the accent shows that this is the verb form, not the conjunction.

No. Inteligente is one of many adjectives that has the same form for both masculine and feminine singular.

So you can say:

• O aluno é inteligente.
• A aluna é inteligente.

Both are correct.

Only the article and noun change; the adjective stays the same here.

You make the noun, article, and adjective plural:

• As alunas são inteligentes. = The female students are intelligent.

Changes:

• a → as
• aluna → alunas
• é → são
• inteligente → inteligentes

So in Portuguese, adjectives usually agree in number, even when they do not change for gender.

In this sentence, inteligente is not directly attached to the noun in the same way as in an intelligent student. It comes after the verb ser and describes the subject.

Structure:

• A aluna = the subject
• é = is
• inteligente = intelligent

So this is the same pattern as English:

• The student is intelligent.

If you wanted to say the intelligent student, you would say:

• a aluna inteligente

That is a different structure.

Normally, no. Aluna é inteligente sounds incomplete or unnatural in standard Portuguese.

You would usually say:

• A aluna é inteligente. = The student is intelligent.
• Uma aluna é inteligente. = A student is intelligent.

So in this kind of sentence, the noun usually needs a determiner such as:

• a = the
• uma = a

The difference is the article:

• A aluna = the student
• Uma aluna = a student

So:

• A aluna é inteligente. = You are talking about a specific female student.
• Uma aluna é inteligente. = You are talking about one female student, not specifically identified.

A simple learner-friendly approximation is:

ah ah-LOO-nah eh een-tuh-lee-ZHEN-tuh

A few helpful notes:

• aluna is stressed on lu
• é is a clear stressed vowel
• inteligente is stressed on gen

A more European Portuguese-style pronunciation is more reduced in unstressed vowels, so it may sound closer to:

a lû-na é int-li-ZHEN-t(ə)

The exact sound depends on speaking speed and region, but the main stress pattern is the important part for beginners.

Yes, if it is already clear who you mean.

• Ela é inteligente. = She is intelligent.

Use:

• A aluna é inteligente. when you want to name or identify the person as the student
• Ela é inteligente. when the context already tells us who she is

Both are natural, but they are used in slightly different situations.

Yes, that is the usual idea. Ser is commonly used for characteristics seen as more essential, defining, or lasting.

So:

• A aluna é inteligente. suggests that intelligence is a characteristic of the student.

If you used estar, it would sound unusual here, because intelligence is not normally treated as a temporary state. Portuguese usually says:

• Ela é inteligente.

not

• Ela está inteligente.

The word order is:

Subject + verb + adjective

So:

• A aluna = subject
• é = verb
• inteligente = adjective / description

This is a very common and straightforward Portuguese sentence pattern, and it matches English quite closely:

• The student is intelligent.