A Ana compra coentros frescos no mercado.

In European Portuguese, it is very common to use the definite article before a person’s first name in everyday speech.

So A Ana means Ana, with a being the feminine singular definite article, like the in form, though in English we usually do not translate it.

• A Ana = Ana
• O João = João

This is especially normal in Portugal. In English, saying the Ana would sound wrong, but in Portuguese it is perfectly natural.

Compra is the 3rd person singular of the verb comprar (to buy) in the present indicative.

Here it agrees with A Ana:

• eu compro = I buy
• tu compras = you buy
• ela compra = she buys

In this sentence, compra can mean:

• she buys (a habitual action)
• she is buying only in some contexts, though Portuguese usually uses other structures if you want to stress an action happening right now

So without extra context, it is most naturally understood as a normal present statement: Ana buys ...

Because the noun is plural, the adjective must also be plural.

• coentro = coriander / cilantro
• coentros = coriander leaves / cilantro, plural

And:

• fresco = fresh, masculine singular
• frescos = fresh, masculine plural

So:

• coentros frescos = fresh coriander / fresh cilantro

In Portuguese, adjectives usually agree with the noun in:

• gender: masculine or feminine
• number: singular or plural

Here coentros is masculine plural, so frescos must also be masculine plural.

In Portuguese, adjectives often come after the noun.

So:

• coentros frescos = fresh coriander

This is the most normal position here.

Sometimes adjectives can go before the noun, but that can sound more literary, emphatic, or slightly change the nuance. For a simple everyday sentence, coentros frescos is the natural order.

No is a contraction of:

• em = in / at
• o = the

So:

• em + o = no

That gives:

• no mercado = in the market / at the market

Portuguese uses these contractions very regularly:

• em + a = na
• em + os = nos
• em + as = nas

Examples:

• na loja = in/at the shop
• nos mercados = in the markets

Because Portuguese often uses an article where English may not.

Here mercado is treated as a specific or natural location, so the market is expressed with the article:

• no mercado = in/at the market

Saying em mercado would sound incomplete or unnatural in this sentence.

This is very common in Portuguese: articles are used more often than in English.

It can mean either, depending on context.

In natural English, at the market is often the best translation. But literally, no mercado is in the market.

Portuguese em can cover both ideas that English sometimes separates into in and at.

So:

• A Ana compra coentros frescos no mercado. can be understood as:
• Ana buys fresh coriander at the market. or
• Ana buys fresh coriander in the market.

Yes. In European Portuguese, coentros is the normal word for coriander or cilantro, depending on the variety of English.

A useful note for English speakers:

• In British English, coriander is common.
• In American English, cilantro often refers specifically to the fresh leaves.

In Portugal, coentros is the standard everyday word.

Not always.

In Brazil, people often use:

• Ana compra coentro fresco no mercado.

A few differences:

• The article before a first name is less consistently used than in Portugal.
• coentro is often used in the singular as a mass noun in Brazilian Portuguese.
• The overall meaning is the same.

So the original sentence sounds very naturally European Portuguese.

Yes, but the basic order here is the most neutral one:

• A Ana = subject
• compra = verb
• coentros frescos = object
• no mercado = place

This is a standard subject + verb + object + place pattern.

You could also say:

• No mercado, a Ana compra coentros frescos.

That puts more focus on the location. But the original sentence is the most straightforward and neutral version.

A rough European Portuguese pronunciation is:

A Ana compra coentros frescos no mercado
≈ uh AH-nuh KOM-pruh koo-EN-trosh FRESH-koosh nu mer-KAH-doo

A few helpful points:

• A Ana: the first A is the article, usually reduced and unstressed.
• compra: the final a is often a weak uh sound in European Portuguese.
• coentros: the oe is pronounced in separate syllables.
• frescos: final s often sounds like sh in European Portuguese when it comes at the end of a word or before a consonant.
• no is usually a short unstressed syllable.

This is only an approximation for English speakers, but it can help you get started.