Lijek je gorak, pa ga djeca ne vole.

Je is the unstressed present-tense form of biti (to be). In Croatian, unstressed forms like je are clitics, and they usually appear near the beginning of the clause, often in second position.

So the neutral word order is:

Lijek je gorak.

Not:

Je lijek gorak. — unless you are forming a question or using a special structure.

Because adjectives in Croatian must agree with the noun they describe in gender, number, and case.

Here, lijek is:

• masculine
• singular
• nominative

So the adjective must also be masculine singular nominative:

• gorak for masculine
• gorka for feminine
• gorko for neuter

Compare:

• Lijek je gorak.
• Juha je gorka.
• Piće je gorko.

Here pa means something like so, therefore, or and so.

It connects the two clauses and shows a consequence:

• Lijek je gorak → that is the reason
• pa ga djeca ne vole → that is the result

So pa is not just a simple and here; it carries a sense of result.

Ga is the unstressed object pronoun meaning him/it, and here it refers back to lijek.

Since lijek is a masculine singular noun, Croatian uses the matching pronoun ga.

So instead of repeating the noun, Croatian says:

Lijek je gorak, pa ga djeca ne vole.

This is more natural than repeating lijek again.

This is about clitic placement.

Ga is a clitic, so it likes to stand very early in the clause. After a conjunction like pa, it often comes immediately after it:

pa ga djeca ne vole

That is a very natural order.

Without pa, the usual neutral order would be:

Djeca ga ne vole.

But:

Djeca ne vole ga — is not the normal standard order.

So the key idea is: ga is unstressed and wants an early position in the clause.

Djeca is plural. It means children and takes plural agreement.

That is why the verb is:

vole = they love / like

not:

voli = he/she/it loves/likes

So:

• Djeca vole. = Children like/love.
• Djeca su došla. = The children came.

Even though the ending may look singular to an English speaker, djeca is definitely plural.

The singular is dijete, meaning child.

This is an irregular pair:

• dijete = child
• djeca = children

So if you want to make the sentence singular, you could say:

Dijete ne voli lijek.

In Croatian, ne is usually written separately from the verb in the present tense:

• ne volim
• ne znaš
• ne vole

So ne vole is the normal spelling.

A few very common verbs have special negative forms written together, such as:

• nisam
• nije
• neću

But with voljeti, the standard form is:

ne vole

Yes. You can say:

Lijek je gorak, pa djeca ne vole lijek.

That is grammatically correct.

However, using ga is more natural because it avoids repeating the noun:

Lijek je gorak, pa ga djeca ne vole.

Also notice that if you repeat the noun, it stays lijek. That is because for a masculine inanimate noun like lijek, the accusative singular has the same form as the nominative singular.

Because pa here connects two full clauses, and each clause has its own verb:

1. Lijek je gorak
2. ga djeca ne vole

In Croatian, when pa links two independent clauses like this, a comma is normally used.

So the punctuation in the sentence is standard:

Lijek je gorak, pa ga djeca ne vole.