Mi sidas apud la rivero.

In Esperanto, -as is the present-tense verb ending.

So:

• sidi = to sit
• sidas = sit / am sitting / is sitting / are sitting

Esperanto verbs do not change for person, so the same form is used with all subjects:

• mi sidas = I sit / I am sitting
• vi sidas = you sit / you are sitting
• li sidas = he sits / he is sitting

That makes Esperanto much simpler than English in this area.

No. In Esperanto, the verb tells you the tense, but not the person.

For example, sidas only tells you that the action is in the present. It does not mean specifically I sit. That is why the subject pronoun is normally included:

• mi sidas = I am sitting
• ŝi sidas = she is sitting
• ili sidas = they are sitting

So mi is necessary here to show who is sitting.

Apud is a preposition. It means beside, next to, or by the side of.

In this sentence:

• apud la rivero = beside the river

It shows location in relation to something else.

Other common Esperanto prepositions include:

• en = in
• sur = on
• sub = under
• ĉe = at, by
• kun = with

So apud specifically gives the idea of being next to something.

La is the definite article, meaning the.

So:

• rivero = a river / river
• la rivero = the river

Esperanto uses only one article, la, for all nouns. It does not have separate forms like English a and an.

In this sentence, la rivero suggests a specific river is meant, just as English says the river.

Because -o is the standard Esperanto noun ending.

So:

• rivero = river
• domo = house
• hundo = dog

This is one of the most regular parts of Esperanto grammar:

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb
• -as = present tense verb

Seeing rivero, a learner can immediately recognize that it is a noun.

Because this sentence describes location, not movement toward something.

In Esperanto, -n is used:

1. for the direct object
2. often to show direction toward a place

Here, la rivero is not the direct object of sidas, and the sentence does not mean movement toward the river. It means the speaker is already sitting beside it.

So:

• Mi sidas apud la rivero. = I am sitting beside the river.

If there were movement, Esperanto might use -n in some constructions, but not here.

Yes, you could, but it is slightly different.

• apud la rivero = beside the river, next to it
• ĉe la rivero = at the river, by the river

Apud is more specifically about being right beside something. Ĉe is broader and can mean being at or near a place or person.

So if you want to emphasize that you are physically next to the riverbank, apud is a very natural choice.

Because Esperanto’s present tense often covers both:

• I sit
• I am sitting

So Mi sidas can mean either, depending on context.

Esperanto usually does not need a special progressive form the way English does. If you really want to emphasize the ongoing nature of the action, you can use a participial expression such as Mi estas sidanta, but that is less basic and often unnecessary.

So in ordinary Esperanto, Mi sidas apud la rivero is the normal, natural way to say this.

Sidi is intransitive. That means it does not take a direct object.

You can say:

• Mi sidas.
• Li sidas sur seĝo. = He is sitting on a chair.

But you do not say something like Mi sidas ion.

That is one reason there is no -n object ending on anything in this sentence. The phrase apud la rivero is a prepositional phrase, not a direct object.

Yes, you could.

Esperanto word order is fairly flexible because the grammar is marked clearly by endings and prepositions. The most neutral order here is:

• Mi sidas apud la rivero.

But these are also possible:

• Apud la rivero mi sidas.
• Mi apud la rivero sidas.

The first alternative can sound more poetic or emphatic, because it puts the location first. Still, for beginners, the standard subject-verb-other-elements order is the safest and most natural choice.

It is pronounced roughly ree-VEH-ro.

A few useful pronunciation points:

• r is typically rolled or tapped
• v sounds like English v
• e is a clear eh sound
• the stress in Esperanto is always on the second-to-last syllable

So in ri-ve-ro, the stress is on ve:

• ri-VE-ro

That regular stress rule is very helpful in Esperanto.