La kunveno daŭris du horojn, kaj poste mi ripozis la tutan vesperon.

In this sentence, the -n does not mark a direct object. It marks duration of time.

Esperanto often uses the accusative ending -n to show how long something lasted:

• daŭris du horojn = lasted for two hours
• ripozis la tutan vesperon = rested the whole evening

This is a very common pattern. You can think of it as a compact way to say for two hours or throughout the whole evening.

Compare:

• Mi atendis tri horojn. = I waited for three hours.
• Ŝi dormis la tutan nokton. = She slept the whole night.

Because adjectives in Esperanto must agree with the noun they describe.

Here, vesperon is:

• singular
• accusative, because it shows duration

So the adjective must match:

• tuta vespero = whole evening
• la tuta vespero = the whole evening
• la tutan vesperon = the whole evening, used as a duration expression

Both the noun and the adjective take -n:

• tutan
• vesperon

La is the definite article, like the in English.

So La kunveno means that the speaker has a specific meeting in mind, not just any meeting. Usually it is a meeting already known from the context.

Compare:

• Kunveno daŭris du horojn would sound odd in normal Esperanto, because singular countable nouns usually need some determiner if they are being used this way.
• La kunveno daŭris du horojn = the meeting lasted two hours.

Here la helps express the whole evening as a specific, complete time period.

Without la, tutan vesperon is not impossible in some contexts, but la tutan vesperon is the most natural way to say the entire evening.

It works much like English:

• the whole evening
• the entire day
• the whole week

So la makes the time span feel definite and complete.

Yes. Both are possible.

• La kunveno daŭris du horojn.
• La kunveno daŭris dum du horoj.

Both mean basically the same thing.

However, the bare accusative of duration, du horojn, is often more direct and elegant in Esperanto. It is very common after verbs when you mean for this length of time.

The same applies to the second part:

• mi ripozis la tutan vesperon
• mi ripozis dum la tuta vespero

Both are correct.

No. That is a very common beginner question.

In this sentence, du horojn is not the thing that was lasted. It is a time expression in the accusative, showing duration.

So even though it has -n, it is not acting like a normal direct object.

That is important because English speakers often assume that every -n means direct object. In Esperanto, -n has several uses, including:

• direct object
• direction toward something
• measure/time expressions

Here it is the time use.

Because Esperanto uses -is for the past tense.

So:

• daŭras = lasts / is lasting
• daŭris = lasted
• ripozas = rest
• ripozis = rested

Both actions are presented as completed events in the past:

• the meeting lasted two hours
• afterward, I rested the whole evening

Poste means afterward, after that, or then.

It connects the two events in time:

1. the meeting lasted two hours
2. after that, I rested the whole evening

So kaj poste gives a natural sequence: and then / and afterward.

Yes. Esperanto word order is fairly flexible, as long as the sentence stays clear.

For example, these are possible:

• La kunveno daŭris du horojn, kaj poste mi ripozis la tutan vesperon.
• La kunveno daŭris du horojn, kaj mi poste ripozis la tutan vesperon.
• Poste mi ripozis la tutan vesperon.

The original placement is very natural and easy to understand.

Because ripozi in Esperanto normally works without an object. It simply means to rest.

So:

• Mi ripozis. = I rested.
• Mi ripozis la tutan vesperon. = I rested the whole evening.

You do not say ripozis min for rested myself. That would be unnatural.

English sometimes uses reflexive wording, but Esperanto usually does not need it here.

Kaj simply means and.

It joins the two clauses:

• La kunveno daŭris du horojn
• poste mi ripozis la tutan vesperon

So the sentence is made of two coordinated parts, linked by kaj.

Yes, and that can be helpful for learners.

Kunveno is related to:

• kun = with, together
• veni = to come

Historically and structurally, the idea is something like a coming together, which gives the meaning meeting or gathering.

In modern Esperanto, though, you should simply learn kunveno as the normal word for meeting.

Yes, absolutely.

These are both good Esperanto:

• mi ripozis la tutan vesperon
• mi ripozis dum la tuta vespero

The first uses the accusative of duration. The second uses dum + a normal noun phrase.

The first is often a little more compact and idiomatic, but both are correct and common.

No. In Esperanto, ordinary numerals like du, tri, kvar do not take plural or accusative endings.

So you say:

• du horoj
• du horojn

The noun changes when needed, but the numeral stays the same.

That is why it is:

• du horojn, not dujn horojn

You figure it out from the verb and the context.

With a verb like ripozi, there usually is no direct object. So when you see:

• mi ripozis la tutan vesperon

the natural interpretation is duration of time, not I rested the whole evening as if evening were an object.

Time words in the accusative are extremely common in Esperanto, so native-style reading quickly makes this feel natural.