La modelo vidas la negativon.

The -n is the accusative ending. In Esperanto, the direct object of a verb usually takes -n.

• la modelo = the model → the one doing the action
• vidas = sees
• la negativon = the negative → the thing being seen

So negativon has -n because it is the object of vidas.

Because la modelo is the subject, not the object.

In this sentence:

• la modelo = the one who sees
• la negativon = the thing that is seen

Only the direct object gets -n, so modelo stays just modelo.

The ending -o marks a noun in Esperanto.

So:

• modelo = a model
• negativo = a negative

This is one of the most regular features of Esperanto: nouns normally end in -o.

La is the definite article, meaning the.

Esperanto uses la for all nouns, regardless of gender, number, or case. So:

• la modelo = the model
• la negativon = the negative

Unlike English, Esperanto does not have separate forms like a/an and the in the same way. La always means the.

Esperanto verbs do not change according to the subject.

In English, we say:

• I see
• you see
• he/she sees

But in Esperanto, the present tense always ends in -as:

• mi vidas
• vi vidas
• li vidas
• la modelo vidas

So vidas is correct no matter who is doing the seeing.

Vidas is present tense.

In Esperanto:

• -as = present
• -is = past
• -os = future

So:

• vidas = sees / is seeing
• vidis = saw
• vidos = will see

Yes, to some extent.

Because negativon has the accusative -n, Esperanto can show who is the object even if the word order changes.

For example:

• La modelo vidas la negativon.
• La negativon vidas la modelo.

Both mean the same basic thing: the model sees the negative.

However, the first version is the most neutral and natural for beginners.

The dictionary form is vidi, which means to see.

Esperanto verbs are usually learned in the infinitive form:

• vidi = to see

Then you change the ending:

• vidas = sees / is seeing
• vidis = saw
• vidos = will see

So vidas comes from vidi.

It is singular.

In Esperanto:

• singular nouns do not have -j
• plural nouns do have -j

So:

• negativo = a negative
• negativon = a negative, as direct object
• negativoj = negatives
• negativojn = negatives, as direct object

Since negativon has no -j, it is singular.

A simple pronunciation guide is:

la mo-DE-lo VI-das la ne-ga-TI-von

A few helpful points:

• v is pronounced like English v
• d and t are clear and crisp
• stress usually falls on the second-to-last syllable

So:

• modelo → moDElo
• vidas → VIdas
• negativon → negaTIvon

Yes. Depending on context, negativo can mean something like a negative, often especially a photographic negative.

Esperanto words often depend on context just as English words do. So if the meaning has already been given to you, that is the meaning to use here. Grammatically, though, it behaves like a normal noun:

• negativo = noun
• negativon = that noun as a direct object

It would be:

La modelo vidas la negativo

But this is not standard here, because the direct object should normally take -n.

So the correct sentence is:

La modelo vidas la negativon.

The -n is an important part of Esperanto grammar and helps make sentence structure clear.