Advanced Relative Clauses in Catalan

Overview

At the B2 level, you expand your relative clause toolkit to include complex constructions with prepositions, the full el qual system, and non-restrictive (explanatory) relative clauses. These structures are essential for formal writing, academic texts, and sophisticated expression.

Advanced relative clauses in Catalan use the full range of relative pronouns: que (basic), qui (for people after prepositions), el qual / la qual / els quals / les quals (formal, agrees with antecedent), and què (after prepositions for things). Understanding when to use each form — and the subtle differences between them — marks B2 proficiency.

Non-restrictive relative clauses, set off by commas, add extra information: Barcelona, que és la capital, és molt gran (Barcelona, which is the capital, is very big). These are common in both speech and writing.

How It Works

Relative Pronoun System

Pronoun	Use	Example
que	Subject/object (no preposition)	L'home que veig.
qui	After preposition, for people	L'home amb qui parlo.
què	After preposition, for things	La casa en què visc.
el qual / la qual	Formal, after preposition	El motiu pel qual va marxar.
els quals / les quals	Plural formal	Les raons per les quals va marxar.
on	Place	La ciutat on vaig néixer.

Non-Restrictive (Explanatory) Clauses

Catalan	English
Barcelona, que és la capital, és gran.	Barcelona, which is the capital, is big.
El meu germà, que viu a Girona, vindrà demà.	My brother, who lives in Girona, will come tomorrow.

Complex Preposition + Relative Patterns

Pattern	Example
en + què	La casa en què vaig néixer. (The house in which I was born.)
per + el qual	El motiu pel qual vaig marxar. (The reason for which I left.)
de + qui	La persona de qui et parlo. (The person about whom I'm telling you.)
gràcies a + el qual	L'amic gràcies al qual vaig aconseguir-ho. (The friend thanks to whom I achieved it.)

Examples in Context

Catalan	English	Note
La casa en què vaig néixer.	The house in which I was born.	Preposition + què
El motiu pel qual vaig marxar.	The reason for which I left.	Per + el qual
La persona de qui et parlo.	The person about whom I'm telling you.	De + qui
El dia en què ens vam conèixer.	The day on which we met.	Temporal
Barcelona, que té dos milions d'habitants, és cosmopolita.	Barcelona, which has two million inhabitants, is cosmopolitan.	Non-restrictive
Les persones amb les quals treballo.	The people with whom I work.	Plural formal
El llibre, el qual va guanyar un premi, és fantàstic.	The book, which won a prize, is fantastic.	Non-restrictive, formal
La manera en què ho va fer em va sorprendre.	The way in which he/she did it surprised me.	Manner

Common Mistakes

Using "que" after a preposition

• Wrong: La casa en que visc.
• Right: La casa en què visc.
• Why: After a preposition, use "què" (with accent) for things, not bare "que."

Forgetting agreement with "el qual"

• Wrong: Les raons pel qual va marxar.
• Right: Les raons per les quals va marxar.
• Why: "El qual" must agree with its antecedent in gender and number.

Omitting commas in non-restrictive clauses

• Restrictive: L'home que treballa aquí és simpàtic. (The man who works here is nice — defining which man)
• Non-restrictive: En Pere, que treballa aquí, és simpàtic. (Pere, who works here, is nice — extra info)
• Why: The comma changes meaning: without it, the clause identifies; with it, it adds information.

Usage Notes

In everyday speech, Catalan speakers often avoid complex relative clauses by restructuring: La casa on visc (simpler) instead of La casa en la qual visc (more formal). The formal el qual forms are primarily written. However, for B2 proficiency and beyond, you need to understand and produce both levels.

Practice Tips

1. Rewrite simple sentences as complex relative clauses: "Treballo en una empresa. L'empresa és internacional." → "L'empresa en la qual treballo és internacional."
2. Practice the comma distinction: write pairs of restrictive and non-restrictive clauses about the same person or thing.
3. Read formal Catalan texts and note which relative pronoun forms they use and why.

Related Concepts

• Basic Relative Clauses — simple relative clauses with que/on
• Relative Pronouns with Prepositions — B1 introduction