B1 6 hoursSyntax & Structure

Relative Clauses: Complete Guide for Spanish Speakers

High B1

Pronoun selection (who/which/that). Spanish uses 'que' for almost everything. English requires distinction between who (people), which (things), and that (both).

Last Updated: January 15, 2026 | Reviewed by: María González

🎯 Why This Matters

Descriptions and definitions without interruption.

Learning Outcome

Long, fluid sentences.

🇪🇸 The Challenge

Pronoun selection (who/which/that). Spanish uses 'que' for almost everything. English requires distinction between who (people), which (things), and that (both).

🇲🇽🇨🇴🇦🇷 Spanish 'que' is universal

Problem: Spanish uses 'que' for people and things alike

Watch out: Using WHICH for people or WHO for things

✅ Fix: Ask: Am I talking about a PERSON? → WHO. A THING? → WHICH. Either? → THAT.

🧠 Mental Note: Spanish 'que' ≠ English 'that'. You need to choose WHO/WHICH/THAT!

❌ 'The teacher which helped me' → ✅ 'The teacher who helped me'

🇪🇸 Same 'que' challenge

Problem: Castilian Spanish also uses 'que' universally

Watch out: Defaulting to THAT for everything or using wrong pronoun

✅ Fix: WHO for humans, WHICH for non-humans, THAT for both in defining clauses

❌ 'La máquina que (which not who) compré' = 'The machine WHICH I bought'

🧠 Visual Explanation (The Mental Fix)

The Relative Pronoun Chooser

Think of relative pronouns as LABELS for what you're describing: 👤 WHO/WHOM = For PEOPLE - The man WHO called you... - The woman WHOM I met... 📦 WHICH = For THINGS/ANIMALS - The book WHICH I read... - The cat WHICH sleeps... 🔄 THAT = For BOTH (informal) - The person THAT helped me... - The car THAT I bought... DEFINING vs NON-DEFINING: - Defining (no commas): The man WHO called is here. (which man? the one who called) - Non-defining (commas): My brother, WHO lives in Madrid, is visiting. (extra info) ⚠️ THAT cannot be used in non-defining clauses!

WHO = people. WHICH = things. THAT = either (but not with commas).

🗣️ Pronunciation Guide

How Spanish speakers should pronounce this structure:

Who vs Whom

Spanish Habit: Not distinguishing subject/object

English Reality: Whom is used for objects (after prepositions or as object of verb)

Examples:

  • WHO did this? (subject)
  • WHOM did you see? (object)
  • To WHOM did you speak?

Practice: If you can answer with HIM/HER, use WHOM. If with HE/SHE, use WHO.

📖 How It Works

Combining two sentences into one.
Learning Strategy

Teacher Recommendation: Teacher recommended

Time Investment: 6 hours

🔑 Signal Words (Memory Anchors)

These words/phrases appear with this structure:

English Spanish Example
who que (personas) The man who called...
whom a quien The person whom I met...
which que (cosas) The book which I read...
that que (ambos) The thing that I need...
whose cuyo/cuya The man whose car is red...

💬 Real Examples

Let's see this structure in action with correct vs incorrect usage:

Example 1: Who for people

CORRECT: "The woman who works here is my sister."

🇪🇸 Translation: "La mujer que trabaja aquí es mi hermana."

COMMON MISTAKE: "The woman which works here is my sister."

Why wrong? WHICH is for things. WHO is for people!

🇲🇽 LatAm Trap: Spanish uses 'que' for everything. English needs WHO for people.
Who = subject. Whom = object (formal): The man whom I saw.

Example 2: Which for things

CORRECT: "The book which I bought is interesting."

🇪🇸 Translation: "El libro que compré es interesante."

COMMON MISTAKE: "The book who I bought is interesting."

Why wrong? WHO is for people. WHICH is for things!

🇲🇽 LatAm Trap: Again, Spanish 'que' covers both. English distinguishes.
THAT can also be used: 'The book that I bought...'

Example 3: Non-defining clauses

CORRECT: "Paris, which is the capital of France, is beautiful."

🇪🇸 Translation: "París, que es la capital de Francia, es hermosa."

COMMON MISTAKE: "Paris, that is the capital of France, is beautiful."

Why wrong? THAT cannot be used in non-defining clauses (with commas)!

Non-defining = extra info you could remove. Use WHICH, not THAT.

✏️ Practice Exercises

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