Isto é um fato.

Isto means this.

It is a demonstrative pronoun, used to point to a thing, idea, or statement. In Brazilian Portuguese, isto often refers to something close to the speaker or something not yet clearly named.

In this sentence, isto is the subject:

• Isto = this
• é = is
• um fato = a fact

So the structure is very close to English.

Both isto and isso can often be translated as this/that, but they are used a little differently.

A simple way to think about it:

• isto = this, usually near the speaker or not yet specified
• isso = that or sometimes this, usually referring to something already mentioned or closer to the listener

In real Brazilian Portuguese, isso is often more common in everyday speech than isto.

So:

• Isto é um fato. = a bit more careful or neutral
• Isso é um fato. = very natural in conversation, especially if referring back to something just said

Because Portuguese uses ser for identity, definition, and classification.

Here, the sentence is saying that something is a fact by nature or classification:

• Isto é um fato.

You would not normally use estar here, because estar is usually for:

• temporary states
• locations
• changing conditions

Compare:

• Isto é um fato. = This is a fact.
• Ele está cansado. = He is tired.

The accent is important because é and e are different words:

• é = is
• e = and

So:

• Isto é um fato. = This is a fact.
• isto e um fato would be wrong

The accent helps distinguish the verb form clearly.

Um is the indefinite article, meaning a or an.

So:

• um fato = a fact

Just like in English, it introduces a singular countable noun.

Yes, you can hear Isso é fato or Isto é fato, especially in spoken Brazilian Portuguese, with the meaning That’s a fact or That’s true.

But there is a slight difference in feel:

• Isto é um fato. = more literal, complete, standard
• Isso é fato. = more idiomatic, conversational, emphatic

For a learner, Isto é um fato is a very safe and clear version.

Fato is masculine.

You can tell because it uses:

• um fato = a fact

If it were feminine, it would use uma.

Examples:

• singular: o fato, um fato
• plural: os fatos, uns fatos

No. Isto is a neuter demonstrative pronoun.

That means it does not change for masculine or feminine the way words like este/esta do.

Compare:

• este livro = this book
• esta casa = this house
• isto = this (thing/idea), without naming a noun

So isto is often used when the speaker is referring to:

• an idea
• a situation
• something not named yet

A simple pronunciation guide is:

EES-too eh oong FAH-too

A few useful notes:

• isto sounds roughly like EES-too
• é sounds like eh
• um has a nasal sound; it is not exactly like English oom
• fato is pronounced roughly FAH-too

In many Brazilian accents, the final o sounds like u, so fato sounds closer to fatu.

The plural is:

• uns fatos = some facts

And the full sentence in the plural would be:

• Isto são fatos. is not natural, because isto is singular and neuter.
• More natural would be Estes são fatos. = These are facts.

So if you want plural agreement, you usually change the demonstrative too.

Yes, it is correct and understandable, but in everyday Brazilian Portuguese, people often prefer:

• Isso é um fato.
• Isso é fato.
• É um fato.

So Isto é um fato is grammatical and natural enough, but it can sound a little more formal, careful, or written than some everyday alternatives.

In Brazilian Portuguese, fato normally means fact.

A useful variety note:

• In European Portuguese, fact is often facto
• In Portugal, fato can also mean suit (the clothing)

In Brazil, suit is usually terno, so fato in Brazilian Portuguese is normally understood as fact.

The word order is:

subject + verb + article + noun

So:

• Isto = subject
• é = verb
• um fato = predicate noun

This is very similar to English:

• This is a fact.

That makes this sentence a nice example of a simple and direct Portuguese sentence pattern.