La infano estas soifa, do ŝi trinkas akvon el botelo.

La is the definite article, meaning the. Esperanto has only one definite article, and it never changes for gender, number, or case.

So:

• la infano = the child
• infano = a child / child depending on context

Infano is gender-neutral and simply means child. Esperanto often uses gender-neutral nouns unless the gender matters.

In this sentence, the later pronoun ŝi tells you the child is female. If you wanted to make that clear from the start, you could say la knabino for the girl.

Ŝi means she, so it is used because the child is female.

Although infano itself is gender-neutral, once the speaker chooses ŝi, the child is clearly understood to be a girl. Using ĝi for a person is generally not normal in standard Esperanto unless there is a very special reason.

In Esperanto, adjectives end in -a.

So:

• soifa = thirsty
• bona = good
• granda = big

Here, soifa describes la infano, so it uses the adjective ending -a.

After estas, the adjective is a predicate adjective, not a direct object. Predicate adjectives normally do not take -n.

So:

• La infano estas soifa = The child is thirsty

But direct objects do take -n, such as:

• ŝi trinkas akvon = she drinks water

Do means so, therefore, or thus. It shows a result.

So the sentence structure is:

• La infano estas soifa = the child is thirsty
• do ŝi trinkas akvon = so she drinks water

It connects the cause and the result.

In Esperanto, verbs in the present tense end in -as.

So:

• trinkas = drinks / is drinking
• estas = is / are / am

Esperanto does not usually distinguish between drinks and is drinking the way English does. The context tells you which is meant.

The -n ending marks the direct object in Esperanto.

Here, the thing being drunk is water, so akvo becomes akvon:

• ŝi trinkas akvon = she drinks water

A very common rule is:

• subject: no -n
• direct object: -n

El means out of, from inside, or in this context simply from.

So trinkas akvon el botelo means she drinks water from a bottle, with the idea that the water comes out of the bottle.

This is more natural here than a preposition like de, because el specifically suggests something coming from within something else.

Without la, el botelo means from a bottle or from some bottle.

If you said el la botelo, that would mean from the bottle, referring to a specific bottle already known in the context.

So both are possible, but they mean slightly different things:

• el botelo = from a bottle
• el la botelo = from the bottle

The word order here is the most normal and straightforward one: subject–verb–object.

• La infano = subject
• estas = verb
• soifa = description
• ŝi trinkas akvon = subject + verb + object

Esperanto word order is fairly flexible because endings show the grammar clearly, especially the -n on direct objects. Still, this sentence uses the standard order that learners should get comfortable with first.

Yes. The accusative -n is about grammatical function, not about whether something is countable.

So even though akvo means water and is usually uncountable, it still becomes akvon when it is the direct object:

• ŝi trinkas akvon

The same happens with other uncountable nouns:

• mi manĝas panon = I eat bread
• li trinkas lakton = he drinks milk