Minha filha quer um biscoito no café da manhã.

Because minha agrees with filha, and filha is feminine.

In Portuguese, possessive words like meu / minha agree with the thing being possessed, not with the person who owns it.

• minha filha = my daughter
• meu filho = my son

So even if the speaker is male, they still say minha filha.

Both are possible in Portuguese, but minha filha sounds completely natural here.

In Brazilian Portuguese, possessives can appear:

• without an article: minha filha
• with an article: a minha filha

The choice depends on region, style, and context. In a simple sentence like this, Minha filha quer... is very normal.

Quer is the third-person singular form of the verb querer, which means to want.

So:

• eu quero = I want
• você quer = you want
• ele quer = he wants
• ela quer = she wants

Since minha filha is she, the sentence uses quer.

Its basic meaning is wants, but in some contexts it can sound like would like, depending on tone and situation.

In this sentence, the most direct meaning is:

• Minha filha quer um biscoito = My daughter wants a cookie

If you wanted to sound more polite or less direct in another context, quer can sometimes be understood more softly, but here wants is the clearest translation.

Um here means a or one.

So um biscoito means:

• a cookie
• or one cookie, depending on context

Portuguese usually uses an article with a singular countable noun in this kind of sentence. Saying only quer biscoito is possible, but it sounds more general, like wants cookie/cookies or wants some cookie rather than wants a cookie.

In Brazil, biscoito usually means something like cookie, biscuit, or sometimes cracker, depending on context and region.

A famous regional difference is:

• in some places, people say biscoito
• in others, they say bolacha

So the exact English word can vary, but in a learner sentence like this, cookie is a very natural translation.

No is a contraction of:

• em
  • o = no

Literally, em often means in, on, or at, depending on context.

So:

• no café da manhã literally looks like in the breakfast
• but naturally it means at breakfast or for breakfast

Portuguese uses these contractions all the time:

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

Da is a contraction of:

• de
  • a = da

The expression café da manhã is a fixed phrase meaning breakfast.

Literally, it is something like:

• café = coffee
• da manhã = of the morning

So the literal idea is morning coffee, but the actual meaning is simply breakfast.

This is just the normal Portuguese expression. You do not usually translate it word by word.

It can match either one in English, depending on how you want to phrase it.

In this sentence, Minha filha quer um biscoito no café da manhã, the idea is that she wants a cookie at breakfast or for breakfast.

English chooses between those two more clearly than Portuguese does here. Portuguese often uses no café da manhã to connect something to the breakfast meal in a general way.

Yes, you could, but the meaning shifts slightly.

• no café da manhã = at breakfast / during breakfast
• para o café da manhã = for breakfast

So:

• Minha filha quer um biscoito no café da manhã focuses on the time/meal context
• Minha filha quer um biscoito para o café da manhã sounds a little more like the cookie is intended as part of breakfast

Both can make sense, but no café da manhã is perfectly natural.

The nh sound is like the ny sound in English canyon, but usually smoother and more clearly one sound.

So:

• minha sounds roughly like MEEN-ya
• manhã sounds roughly like ma-NYÃ

Also, the final ã in manhã is nasal, so the vowel comes through the nose. That nasal sound is very important in Portuguese pronunciation.

The sentence uses a very normal Portuguese word order:

• Minha filha = subject
• quer = verb
• um biscoito = object
• no café da manhã = time/context phrase

So the structure is straightforward and natural: subject + verb + object + phrase

You can sometimes move parts for emphasis, but this version is the most neutral and standard one for a learner.