Domina las cláusulas subordinadas en inglés: Guía completa con ejemplos reales

Subordinate clauses are the secret behind natural, fluent English. Without them, our sentences would be short, choppy and boring. Think about it: “I went home. I was tired. I made dinner.” Sounds robotic. Add a subordinate clause: “Because I was tired, I went home and made dinner.” That’s real English.

A subordinate clause (also called a dependent clause) has a subject and a verb, but it can’t stand alone as a complete sentence. It depends on the main clause to give it meaning. In this guide, I’ll show you the three main types of subordinate clauses, how to use them correctly, and what real examples look like. No jargon, just clarity.

What Exactly Is a Subordinate Clause?

A subordinate clause begins with a subordinating conjunction (like because, although, when) or a relative pronoun (like who, which, that). It contains a subject and verb but expresses an incomplete thought. Here’s a quick comparison:

• Main clause: She studied hard. (Complete thought)
• Subordinate clause: Because she studied hard… (What happened? You need more.)

When you put them together: Because she studied hard, she passed the exam. Now you have a complete, natural sentence.

The Three Types (with Real‑Life Examples)

Let’s break them down. Each type has a different job.

1. Noun Clauses

A noun clause acts like a noun in the sentence. It can be a subject, object or complement.

Common starters: that, what, whether, how, whoever, wherever

Examples:

• What she said surprised everyone. (Subject)
• I don’t know whether he will come. (Object)
• The truth is that we were wrong. (Complement)

Notice that you can often replace the whole noun clause with a pronoun: It surprised everyone. / I don’t know it.

2. Adjective (Relative) Clauses

Adjective clauses modify a noun or pronoun. They add extra information about a person or thing.

Common starters: who, whom, which, that, whose, when, where

Examples:

• The man who lives next door is a doctor. (Tells you which man.)
• I lost the book that you gave me. (Which book?)
• That’s the house where I grew up. (Which house?)

A key tip: If you remove the clause and the sentence still makes sense, it’s a non‑restrictive clause (use commas). If the meaning changes, it’s restrictive (no commas).

3. Adverbial Clauses

Adverbial clauses act like adverbs – they tell us when, why, how, where, or under what condition something happens.

Common starters: because, although, while, when, if, unless, so that, as

Examples:

• We left early because it was raining. (Reason)
• Although she was tired, she finished the race. (Contrast)
• If you practice daily, you will improve. (Condition)
• Call me when you arrive. (Time)

These clauses can often move around in a sentence. Put them at the beginning for emphasis or at the end for a smoother flow.

Common Mistakes and How to Fix Them

The biggest issue learners face is sentence fragments. A subordinate clause alone is not a sentence. Avoid writing “Because I was late.” as a standalone sentence. Always attach it to a main clause.

Another mistake: using the wrong conjunction. For example, mixing up although and despite. Remember: although + clause (subject + verb), despite + noun.

A Quick Visual Summary

Here’s a simple breakdown of the three types. Each one connects to a different part of the sentence.

Practice Makes Perfect

The best way to get comfortable with subordinate clauses is to spot them in everyday reading. Open an article or a book. Highlight every clause that starts with because, although, which, or that. Then imitate the pattern in your own writing.

For example, read this sentence: The report, which we submitted last week, has been approved. Now write your own: The project, which I started in March, is almost finished.

Try this mini exercise: Combine the following pairs using a subordinate clause.

1. I was late. I missed the bus.
2. She is kind. She helps everyone.
3. Do you know the answer? Tell me.

Possible answers:

1. I was late because I missed the bus.
2. Since she is kind, she helps everyone.
3. Tell me what the answer is.

Ready to Test Your Skills?

Mastering subordinate clauses will transform your English. You’ll write more sophisticated sentences and sound more natural when speaking. The best way to measure your progress is through a structured test.

At English Measure, we offer a free online test that covers reading, listening, writing and speaking. You’ll get a clear report of your current level (A1 to C2) and personalized recommendations. No sign‑up required.

Take your free English level test now →

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