Nokte la infano aŭskultas trankvilan rakonton kaj poste dormas.

Nokte is an adverb meaning at night or during the night.

In Esperanto:

• nokto = night
• nokta = nightly / nocturnal
• nokte = at night, nightly

The -e ending makes it an adverb, so it tells us when the action happens. Starting the sentence with Nokte is very natural: it sets the time right away.

La is the definite article, meaning the.

So:

• infano = a child / child
• la infano = the child

Esperanto has only one article, la. It does not have separate words for a and an. If you leave out la, the noun is usually more general or indefinite.

The ending -as marks the present tense in Esperanto.

So:

• aŭskultas = listens / is listening
• dormas = sleeps / is sleeping

Esperanto uses the same present-tense form whether English would say listens or is listening. The exact meaning depends on context.

This is a very common question.

• aŭdi = to hear
• aŭskulti = to listen

So aŭdi is passive: you receive sound.
Aŭskulti is active: you pay attention to sound.

In this sentence, aŭskultas is correct because the child is actively listening to a story.

Because rakonton is the direct object of aŭskultas, and direct objects in Esperanto usually take -n.

• rakonto = story
• rakonton = story as a direct object

The adjective must agree with the noun it describes, so:

• trankvila rakonto = a calm story
• trankvilan rakonton = a calm story as a direct object

This agreement happens in both number and case.

It describes rakonton.

In Esperanto, adjectives usually stand near the nouns they describe, and they also agree with them in form. Here, trankvilan matches rakonton, so the meaning is a calm story.

If you wanted to describe the child instead, you would say something like la trankvila infano.

Poste means afterward, later, or then.

It is an adverb, and here it shows the sequence of actions:

1. the child listens to a calm story
2. afterward, the child sleeps

So kaj poste dormas means and then sleeps or and afterward sleeps.

Yes, to some extent.

Esperanto word order is more flexible than English because endings show grammatical roles. For example, the -n on rakonton tells you it is the object.

So variations like these are possible:

• La infano nokte aŭskultas trankvilan rakonton kaj poste dormas.
• Poste la infano dormas, post kiam ĝi nokte aŭskultas trankvilan rakonton.

However, the original order is very natural and easy to understand. It begins with the time expression, then gives the subject, then the actions.

Because dormi is an intransitive verb. It does not take a direct object.

You can:

• aŭskulti rakonton = listen to a story
  but you cannot normally have a direct object with dormi.

So dormas stands on its own: sleeps / is sleeping.

A useful breakdown is:

• aŭ sounds roughly like ow in cow
• sk is pronounced clearly
• stress in Esperanto is always on the second-to-last syllable

So aŭskultas is stressed like this: aŭs-KUL-tas

More generally, Esperanto spelling is very regular, so once you know the sounds, pronunciation is usually straightforward.