Ni konas la fakton.

Ni means we.

Normally, like English we, it can include the listener or not, depending on context. Esperanto does not usually make a special grammatical distinction between:

• we = I + you
• we = I + someone else, not you

So you understand it from the situation.

Koni is the dictionary form, meaning to know or to be acquainted with.

In an actual sentence, Esperanto changes the verb ending to show tense:

• -i = infinitive, to know
• -as = present tense, know / am knowing

So:

• koni = to know
• konas = know / knows / am / is / are knowing

That is why Ni konas la fakton uses konas: it is a complete present-tense sentence.

No. In Esperanto, verbs do not change according to the person or number of the subject.

So you get:

• mi konas = I know
• vi konas = you know
• li konas = he knows
• ni konas = we know
• ili konas = they know

This is much simpler than English, because Esperanto keeps the same present-tense ending -as for everyone.

La is the definite article, meaning the.

So:

• fakto = fact
• la fakto = the fact

Esperanto has only one article, la, and it does not change for gender, number, or case.

Also, Esperanto has no indefinite article. So fakto can mean a fact or just fact, depending on context.

The -n is the accusative ending. It marks the direct object of the verb.

In this sentence:

• Ni = the subject, the ones doing the action
• konas = know
• la fakton = the thing known

So fakto becomes fakton because it is what is being known.

This -n ending is very important in Esperanto. It often lets the language use freer word order without causing confusion.

Usually, yes, because the -n on fakton shows that it is the object.

For example:

• Ni konas la fakton.
• La fakton ni konas.

Both can mean We know the fact.

However, the normal, most neutral order is subject + verb + object, so Ni konas la fakton is the most straightforward version.

If you move la fakton to the front, it can sound more emphatic, like The fact, we know it.

This is a very good question, because English know can correspond to more than one Esperanto verb.

The basic distinction is often taught like this:

• koni = to know, be familiar with, be acquainted with
• scii = to know a fact, to know that..., to have information

So in many contexts, Esperanto prefers scii for factual knowledge:

• Mi scias tion. = I know that.
• Ni scias la veron. = We know the truth.
• Mi scias, ke li venos. = I know that he will come.

With fakto, many learners would expect scii or a clause with ke. For example:

• Ni scias tion.
• Ni scias la fakton.
• Ni scias, ke ...

That said, Ni konas la fakton is understandable. It can suggest being familiar with that fact as something identified or recognized. But if you are talking about simply possessing factual knowledge, scii is often the more natural choice.

A simple pronunciation guide is:

• Ni ≈ nee
• konas ≈ KO-nahs
• la ≈ lah
• fakton ≈ FAHK-ton

A few useful points:

• Esperanto a is like a in father
• o is a clear o sound
• k is always hard, like in skin, never like English soft c
• the stress usually falls on the second-to-last syllable

So:

• KO-nas
• FAK-ton

Usually that would sound less natural.

Ni konas la fakton means We know the fact, referring to a specific fact.

If you remove la, then fakton becomes more like a fact, but in many contexts Esperanto would prefer a different phrasing, depending on the exact meaning.

So for a clear sentence referring to a particular fact, la is the normal choice.

The ending -as is the present tense, but in Esperanto, just as in English, the present tense can express either:

• something happening now
• a general state that is true at present

So Ni konas la fakton can mean:

• We know the fact right now
• We are aware of the fact
• We know that fact in a general present sense

The exact nuance comes from context.