El conte diu que una nena feliç i la seva cosina tornen al poble a l'estiu.

El conte means the story or the tale.

• el = the for a masculine singular noun
• conte = story / tale

So El conte diu... literally means The story says...

Catalan, like English, often uses the definite article when referring to a specific thing already understood in context.

Not exactly, though they can overlap.

• conte usually means a story, especially a tale or a short narrative
• història can mean story, but also history

So conte often feels a bit more like a narrated tale, while història is broader. In this sentence, conte fits well because it sounds like a story someone is telling.

Yes. diu que literally means says that.

• diu = says
• que = that

So:

• El conte diu que... = The story says that...

In natural English, depending on context, you might also translate it as:

• The story tells us that...
• The story says...

Catalan uses dir very commonly in this kind of structure.

diu is the 3rd person singular present of the verb dir (to say).

Examples:

• jo dic = I say
• tu dius = you say
• ell/ella diu = he/she says

Here the subject is El conte, which is singular, so diu is singular too.

Because in Catalan, adjectives usually come after the noun.

• nena = girl
• feliç = happy

So una nena feliç = a happy girl

This is one of the most common differences from English. English usually puts adjectives before the noun, but Catalan often places them after it.

nena usually means girl, but it can also suggest little girl depending on context.

Related words:

• nen = boy / child
• nena = girl / little girl

So in a story, nena often sounds natural for a young girl. If you wanted a more general word for girl, Catalan can also use noia, especially for an older girl or young woman.

feliç means happy, and in the singular it is the same for masculine and feminine.

• un nen feliç = a happy boy
• una nena feliç = a happy girl

In the plural, it changes:

• feliços = masculine plural / mixed plural
• feliçes is not correct in standard Catalan; the standard feminine plural is feliços? No — the correct forms are:
  • feliç = singular
  • feliços = masculine plural
  • feliçes is not standard
  • felices = feminine plural in standard Catalan

So:

• nens feliços
• nenes felices

Because Catalan usually uses the definite article with possessives.

So where English says:

• her cousin

Catalan often says:

• la seva cosina

Literally: the her cousin, though of course that is not how you should translate it into English.

This is very normal in Catalan:

• el meu pare = my father
• la seva amiga = his/her friend
• els nostres llibres = our books

It can mean several things depending on context.

seu / seva / seus / seves can mean:

• his
• her
• its
• their
• sometimes formal your

The exact meaning comes from context.

In this sentence, la seva cosina is most naturally understood as her cousin, referring back to una nena feliç.

Also notice that seva agrees with the thing possessed, not with the owner:

• cosina is feminine singular, so we use seva

Because the subject is plural: una nena feliç i la seva cosina.

That means:

• one happy girl
• and her cousin

Two people together make a plural subject, so the verb must also be plural.

• torna = returns, comes back
• tornen = return, come back

So:

• La nena torna = The girl returns
• La nena i la seva cosina tornen = The girl and her cousin return

It comes from the verb tornar, which often means to return or to come back.

Here are a few present-tense forms:

• torno = I return
• tornes = you return
• torna = he/she returns
• tornen = they return

In this sentence, tornen al poble means they return to the village/town.

Because a + el contracts to al in Catalan.

• a = to
• el poble = the village / the town
• a + el poble → al poble

This is very common:

• al parc = to the park
• al cinema = to the cinema

So tornen al poble means they return to the village/town.

Poble can mean village, small town, or sometimes just the hometown/home village, depending on context.

So tornen al poble could be translated as:

• they return to the village
• they return to the town
• sometimes even they go back to their village/home town

The best English choice depends on the broader story context.

The apostrophe shows elision.

Normally:

• a + l'estiu

The noun is estiu (summer), and with masculine singular nouns beginning with a vowel, the article el becomes l':

• el estiu → l'estiu

So:

• a l'estiu = literally in the summer / in summer

Catalan often uses a with seasons in this way.

It can mean either, depending on how natural the translation sounds in English.

• a l'estiu = in summer
• also often in the summer

Both are reasonable. English style will decide which sounds better in the full sentence.

Because that is a very natural place in Catalan for a time expression.

The structure is:

• El conte diu que
• una nena feliç i la seva cosina
• tornen al poble
• a l'estiu

So the sentence moves from:

1. the reporting phrase
2. the subject
3. the action
4. the place
5. the time

Catalan word order is fairly flexible, but this order sounds completely normal and clear.

Yes, in this sentence que is the normal and correct connector.

• El conte diu que... = The story says that...

Catalan normally uses que to introduce the clause after verbs like dir.

Without que, the sentence would sound wrong here.

Grammatically, seva can indeed mean his, her, or their, depending on context. But in this sentence, the most natural interpretation is her cousin, referring to the girl.

So learners should understand:

• the form itself can be ambiguous
• the context usually tells you whose cousin it is

That kind of ambiguity is common in Catalan possessives.