Si ningú respon, tornaré a trucar per confirmar la cita.

In Catalan, si means if.

A very common pattern is:

• si + present tense, then
• future tense in the main clause

So:

• Si ningú respon, tornaré a trucar.
• literally: If nobody answers, I will call again.

Even though English sometimes feels similar here, learners often expect a future after if. Catalan normally does not do that in this type of real condition.

So si ningú respon is correct, not si ningú respondrà.

Ningú means nobody or no one.

In this sentence:

• Si ningú respon = If nobody answers

It refers to people, not things.

Compare:

• ningú = nobody / no one
• res = nothing / anything
• algú = somebody / someone

So you use ningú because the sentence is about whether a person answers the phone.

Respondre can be used on its own when the meaning is clear, especially in contexts like phones, messages, or people reacting.

So:

• ningú respon = nobody answers

In context, Catalan does not need to spell out the phone or the call.

You could make it more explicit in other sentences, but here the short form sounds natural.

Tornaré is the future simple of tornar.

The verb tornar normally means to return, but when followed by a + infinitive, it means to do something again.

So here:

• tornaré a trucar
• literally: I will return to call
• natural English: I will call again

This is a very common Catalan structure.

Because the expression is:

• tornar a + infinitive

This means to do something again.

Examples:

• Torno a llegir-ho = I read it again
• Va tornar a preguntar = He/She asked again
• Tornaré a trucar = I will call again

So the a is part of the construction, not an optional preposition.

Yes. Both are possible.

• Tornaré a trucar = I’ll call again
• Trucaré de nou = I’ll call again

But tornar a + infinitive is extremely common and very natural in everyday Catalan.

So in this sentence, tornaré a trucar sounds completely normal.

Catalan often leaves out subject pronouns because the verb ending already shows who the subject is.

• tornaré already means I will call again
• the -é ending tells you it is I

So:

• tornaré a trucar = I will call again

You could say jo tornaré a trucar, but that usually adds emphasis, such as:

• Jo tornaré a trucar, no et preocupis.
• I’ll call again, don’t worry.

Without emphasis, leaving out jo is more natural.

Per + infinitive often expresses purpose in Catalan.

So:

• per confirmar la cita
• = to confirm the appointment
• more literally: for confirming the appointment

It answers the question why?

• Why will I call again?
• To confirm the appointment.

This is a very common structure:

• He vingut per ajudar-te = I came to help you
• Truco per preguntar una cosa = I’m calling to ask something

Not always. Cita can mean different things depending on context, including:

• appointment
• date
• sometimes quotation/citation in formal contexts

In this sentence, la cita most naturally means the appointment, because the context is calling to confirm something.

So even though cita can sometimes mean date, here appointment is the likely meaning.

Yes, the given order is natural, but Catalan allows some flexibility.

The original order:

• Si ningú respon, tornaré a trucar...

is the neutral, standard way to say it.

You may also hear:

• Si no respon ningú, tornaré a trucar...

This is also natural and means essentially the same thing: If nobody answers, I’ll call again...

The difference is mostly one of word order and focus, not basic meaning.

For a learner, the original version is a very good model to follow.

Great question. Catalan often does allow or require negative concord, but the exact pattern depends on where the negative word appears.

Here, ningú comes before the verb:

• ningú respon

In that position, you normally do not add no.

But if the negative word comes after the verb, Catalan usually uses no as well:

• No respon ningú

Both mean Nobody answers.

So the rule is roughly:

• Ningú respon → no extra no
• No respon ningú → no is needed

That is why Si ningú respon is correct.

Historically, yes, trucar is related to knocking, but in modern Catalan it is the normal everyday verb for to phone / to call.

So:

• trucar = to call on the phone
• trucar a algú = to call someone

Examples:

• Et trucaré demà = I’ll call you tomorrow
• M’ha trucat aquest matí = He/She called me this morning

So in this sentence, tornaré a trucar simply means I’ll call again.

A useful word-by-word breakdown is:

• Si = if
• ningú = nobody
• respon = answers
• tornaré = I will again / I will return
• a = part of tornar a + infinitive
• trucar = call
• per = to / in order to
• confirmar = confirm
• la cita = the appointment

So the structure is roughly:

• If nobody answers, I will call again to confirm the appointment.

This is a good example of a very natural Catalan sentence built from common everyday patterns.