Divendres la meva tieta ens portarà al teatre en cotxe, i després ens tornarà a casa.

Yes. Here Divendres means on Friday.

In Catalan, days of the week are often used without a preposition when giving the time of an event:

• Divendres anirem al cinema = On Friday we’ll go to the cinema
• Dilluns treballo = On Monday I work

A useful contrast:

• divendres = on Friday
• els divendres = on Fridays / every Friday

So in your sentence, Divendres refers to a specific Friday, not a habitual action.

Because Catalan normally uses the definite article with possessives:

• la meva tieta = my aunt
• el meu germà = my brother
• la nostra casa = our house

That is different from English, where you usually say just my aunt, not the my aunt.

So la meva tieta is the normal Catalan pattern.

Both can mean aunt, but tieta is often a more familiar, affectionate, or everyday form.

Very roughly:

• tia = aunt
• tieta = auntie / aunt, often warmer or more informal

This can vary by region and family, but a learner should understand that tieta is very common and natural.

Ens means us.

In this sentence it appears twice:

• ens portarà = she will take us
• ens tornarà = she will bring/take us back

Catalan object pronouns usually go before a conjugated verb, so you get:

• ens portarà
• ens tornarà

not a structure like English will take us.

Here it is the direct object.

• portar algú al teatre = to take someone to the theatre
• tornar algú a casa = to bring/take someone back home

In both cases, someone is the person being moved, so ens = us is the direct object.

That matters because English learners sometimes expect to us, but here it is simply us.

They are both in the future tense.

Catalan often forms the future by adding endings to the infinitive:

• portar → portarà = he/she will take
• tornar → tornarà = he/she will return / bring back

Future endings are:

• -é
• -às
• -à
• -em
• -eu
• -an

So:

• jo portaré
• tu portaràs
• ell/ella portarà
• nosaltres portarem
• vosaltres portareu
• ells/elles portaran

The accent in -à shows the stress falls on the last syllable.

Because a + el contracts to al.

So:

• a + el teatre → al teatre

This is very common in Catalan:

• al cinema
• al parc
• al metge

A similar contraction happens with de + el:

• del teatre

Because a casa is the normal idiomatic way to say home.

So:

• anar a casa = to go home
• tornar a casa = to return home
• portar algú a casa = to take someone home

If you say a la casa, it sounds more like to the house as a physical building, not simply home.

So in this sentence, ens tornarà a casa means she’ll take us back home.

En cotxe means by car.

Catalan often uses en with means of transport:

• en cotxe = by car
• en tren = by train
• en avió = by plane

A common exception is:

• a peu = on foot

So al teatre en cotxe means to the theatre by car.

Because Catalan portar can be broader than English bring.

Depending on context, portar can mean:

• bring
• take
• carry

In this sentence, the destination is al teatre, so the most natural English translation is take us to the theatre.

So don’t expect a perfect one-word match every time between portar and an English verb.

Després means afterwards, later, or then.

Here it connects the two actions in sequence:

1. first, the aunt takes them to the theatre
2. després, she takes them back home

So i després is very naturally translated as and afterwards or and then.

Good question. The meaning changes depending on whether there is an object.

• tornarà a casa = she will return home
• ens tornarà a casa = she will bring/take us back home

So in your sentence, ens is crucial.

Also, don’t confuse this with tornar a + infinitive, which means to do something again:

• tornarà a cantar = she will sing again

But here a casa is a place, not an infinitive, so the meaning is about returning someone home.

Because Catalan often omits the subject when it is already clear.

The subject in the first clause is la meva tieta, and the second clause keeps the same subject, so Catalan naturally says:

• ..., i després ens tornarà a casa.

Adding ella is possible, but it gives extra emphasis or contrast:

• ..., i després ella ens tornarà a casa.

Without emphasis, leaving it out is more natural.