Todos conhecem a rainha.

Todos is the plural form of todo.

• todo = every / whole / all (singular, depending on context)
• todos = all / everyone (plural masculine or mixed group)

In Todos conhecem a rainha, todos means everyone or all of them.

It is masculine plural because in Portuguese, the masculine plural is also used for:

• a group of men
• a mixed group
• people in general, when gender is not specified

If you were talking about a group of only women, you could say:

• Todas conhecem a rainha. = All of them / All the women know the queen.

Because the subject todos is third person plural.

The verb here is conhecer = to know / to be acquainted with.

Present tense:

• eu conheço
• você/ele/ela conhece
• nós conhecemos
• vocês/eles/elas conhecem

Since todos means they all / everyone, Portuguese uses the third person plural form:

• Todos conhecem

Not:

• Todos conhece ❌

Portuguese often uses two different verbs where English just uses to know.

• conhecer = to know a person, place, thing, or to be familiar/acquainted with
• saber = to know a fact, information, or how to do something

So:

• Todos conhecem a rainha. = Everyone knows the queen.
  (They are acquainted with / know who she is.)

But:

• Todos sabem a verdade. = Everyone knows the truth.
• Ela sabe nadar. = She knows how to swim.

So conhecem is the natural choice with a rainha.

Here a is the definite article meaning the.

• a rainha = the queen

This a is not the preposition to. It is just the feminine singular article.

Portuguese usually uses articles more often than English, especially before common nouns.

Compare:

• o rei = the king
• a rainha = the queen

Because rainha is a feminine singular noun, it takes a.

Because rainha means queen, a feminine noun.

In Portuguese:

• rei = king
• rainha = queen

The article and other words connected to the noun must match its gender:

• a rainha
• uma rainha
• esta rainha

This is grammatical gender, but in this case it also matches real-world sex, since a queen is female.

A rough pronunciation guide:

• Todos ≈ TOH-doos
• conhecem ≈ ko-NYEH-sem or ko-NYEH-seyng depending on accent
• a = short ah
• rainha ≈ ha-EEN-ya or hah-EEN-ya, depending on region and speed

A few pronunciation notes:

• nh sounds like the ny in canyon.
  • So rainha has that ny sound.
• In conhecem, the nh also makes that ny sound.
• The final -em in Brazilian Portuguese is often nasal.

A natural overall pronunciation would sound roughly like:

• TOH-doos ko-NYEH-sem a ha-EEN-ya

Normally, no. That would sound unnatural here.

Portuguese usually needs the article with a noun like this:

• Todos conhecem a rainha. ✅

Without the article:

• Todos conhecem rainha. ❌

The article helps mark rainha as a specific person: the queen.

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

• Todos conhecem a rainha.

This follows the common pattern:

• subject + verb + object

You might also hear:

• A rainha, todos conhecem.

That version gives extra emphasis to a rainha, but it is less neutral.

For a learner, the standard word order is the safest choice.

It can mean either, depending on context.

In this sentence, todos is naturally understood as:

• everyone
• all of them

So:

• Todos conhecem a rainha. can be understood as:
• Everyone knows the queen.
• They all know the queen.

Portuguese often uses todos where English would simply say everyone.

Yes. That is very common in Brazilian Portuguese.

• Todo mundo conhece a rainha. = Everyone knows the queen.

This is often more natural in everyday speech than todos when you mean everyone in general.

Notice the verb changes:

• Todos conhecem ...
• Todo mundo conhece ...

That is because todo mundo is treated as singular grammatically, even though it means many people.

The dictionary form is conhecer.

This is the infinitive, meaning to know / to be acquainted with.

From conhecer, you get forms like:

• conheço
• conhece
• conhecemos
• conhecem

So if you look it up in a dictionary, search for conhecer, not conhecem.