Hi ha soroll al carrer, i la meva filla no pot estudiar.

Hi ha is the standard Catalan expression for there is / there are.

• ha comes from the verb haver
• hi is a little locative word that is part of this fixed structure

For a learner, the easiest thing is to treat hi ha as one unit. In this sentence, it introduces the existence of something: soroll.

Catalan normally does not use estar here. So for existence, think hi ha, not està.

In the present tense, Catalan uses the same form, hi ha, for both singular and plural.

• Hi ha un problema = there is a problem
• Hi ha dos problemes = there are two problems

So unlike English, you do not change between is and are in this expression.

Here, soroll is being used as an uncountable noun, like noise in English.

• Hi ha soroll = there is noise
• Hi ha un soroll = there is a noise / a particular sound

So without an article, it means noise in a general sense. If you added un, it would usually suggest one specific noise or sound.

Al is a contraction of a + el.

• a = to / at / in / on, depending on context
• el carrer = the street
• al carrer = in the street / on the street

Catalan often uses a where English might use in, on, or at. So al carrer is a very normal way to say in/on the street.

Catalan normally uses the definite article before a possessive adjective when it comes before a noun.

So:

• la meva filla = my daughter
• el meu cotxe = my car
• la nostra casa = our house

This is standard grammar, not extra emphasis. English does not do this, but Catalan usually does.

Pot is the 3rd person singular present tense of poder.

So here:

• la meva filla = the subject
• pot = can / is able to

Because the subject is singular, the verb is singular too.

Because it comes after the modal verb poder.

In Catalan, after a modal verb like poder, voler, or haver de, the next verb usually stays in the infinitive:

• pot estudiar = can study
• vol estudiar = wants to study
• ha d'estudiar = has to study

So only pot is conjugated here. Estudiar stays in its base form.

In normal Catalan negation, no goes before the conjugated verb.

So:

• no pot estudiar = cannot study

That is the standard pattern. In this sentence, pot is the conjugated verb, so no goes right before it.

Yes, sometimes. Catalan often leaves out the subject when it is clear from context.

So if everyone already knew you were talking about your daughter, you could say:

• No pot estudiar

However, pot could mean he/she/it/you-formal can, so keeping la meva filla makes the meaning completely clear.

Not always. Many people would also write:

Hi ha soroll al carrer i la meva filla no pot estudiar.

The comma before i can be used to mark a pause or to separate two full clauses more clearly, especially when the second clause has a different subject. So it is acceptable here, but leaving it out would also be very common.