La meva filla no pot parar de riure.

In Catalan, possessives are very often used with the definite article: el meu, la meva, els meus, les meves, etc.

So la meva filla is the normal way to say my daughter.

This is different from English, where we say just my daughter without the.
Catalan often uses:

• el meu pare = my father
• la meva mare = my mother
• la meva filla = my daughter

In some special contexts, the article may be left out, but for a learner, la meva filla is the standard pattern to remember.

Pot is the 3rd person singular form of the verb poder, which means to be able to or can.

So:

• puc = I can
• pots = you can
• pot = he/she/it can

In this sentence, pot agrees with la meva filla, which is singular:

• La meva filla no pot... = My daughter cannot / can’t...

In Catalan, no is the normal word for negation, and it usually goes before the verb.

So:

• pot = she can
• no pot = she cannot / she can’t

This is very straightforward once you get used to it:

• Parla = He/She speaks
• No parla = He/She does not speak

Parar de + infinitive means to stop doing something.

So:

• parar de riure = to stop laughing
• parar de parlar = to stop talking
• parar de plorar = to stop crying

Because the sentence is negative:

• no pot parar de riure

it literally means she cannot stop laughing, or more naturally, she can’t stop laughing.

This is a very common Catalan structure.

Because in this meaning, Catalan uses the fixed pattern parar de + infinitive.

You should learn it as a chunk:

• parar de fer alguna cosa = to stop doing something

For example:

• paro de treballar = I stop working
• no para de parlar = he/she won’t stop talking

So the de is required here.
You would not normally say parar riure in standard Catalan.

After parar de, Catalan uses the infinitive.

So:

• parar de riure = to stop laughing
• parar de menjar = to stop eating
• parar de córrer = to stop running

This works much like English to stop + -ing in meaning, but Catalan uses de + infinitive instead.

Yes, in a way. The basic dictionary form riure means to laugh. But after parar de, English usually translates it with -ing:

• parar de riure = to stop laughing

So even though Catalan uses the infinitive riure, the most natural English translation is often laughing.

There are other ways, but no pot parar de riure is very natural and common.

A close alternative is:

• La meva filla no pot deixar de riure.

This also means My daughter can’t stop laughing.

Both are good Catalan.
For learners, no pot parar de riure is an excellent everyday expression to know.

Filla means daughter.

It is related to family:

• fill = son
• filla = daughter

It does not normally mean just girl. For girl, Catalan would usually use words like nena or noia, depending on age and context.

So in this sentence, la meva filla clearly means my daughter.

In most Catalan varieties, ll is pronounced like the lli sound in million for many English speakers, though the match is not perfect.

So filla sounds approximately like:

• FEE-ya

But pronunciation can vary by dialect. In some accents, ll may sound closer to a y sound.

The important thing for a learner is:

• filla is not pronounced like English fill-a
• the ll is a special Catalan sound

Riure can be a little tricky because of the vowel sequence.

A rough guide is:

• REE-oo-reh

but spoken naturally, the vowels run together smoothly.

The stress is on the first syllable: RIU-re.

If you are learning pronunciation, it helps to hear native audio, because this word is harder to guess from spelling than words like pot or filla.

This is the normal Catalan order:

subject + no + verb + infinitive structure

Breaking it down:

• La meva filla = subject
• no pot = cannot
• parar de riure = stop laughing

So the sentence is built very naturally in Catalan. It follows the same basic logic as English:

• My daughter can’t stop laughing

Even though some small grammar details are different, the overall structure is quite similar.