Our Free Guide Gives You A Fun Way To Teach & Learn The Basics v

Our Free Guide Gives You A Fun Way To Teach And Learn The Basics

Adjective Clauses

Adjective clauses (or relative clauses) are a type of subordinate clause that act as adjectives. The whole clause does the job of an adjective.

Quick Refresher

Adjectives modify nouns and pronouns.

Clauses are groups of words with a subject and a verb. 

Subordinate clauses cannot stand alone.

Take a look at this sentence.

The happy woman danced across the street.

Happy is an adjective modifying the noun woman.

It is telling us which woman.

Do you remember that which one is one of the adjective questions?

Which woman? The happy woman.

Now, look at this sentence.

The woman who looked happy danced across the street.

This time, a whole clause is modifying the noun woman!

The clause is still telling us which woman.

Which woman? The woman who looked happy.

This clause is an adjective clause. It is a group of words with a subject and a verb, and it is acting as one part of speech - an adjective.

adjective clause sentence diagram

Relative Pronouns Can Introduce Adjective Clauses

Most of the time, relative clauses are introduced by relative pronouns.

who, whom, whose, that, which

Here are examples using these relative pronouns:

  • The person who made the mess needs to clean it. (modifying person)
  • The girl whom you teach is my sister. (modifying girl)

  • People whose cats shed need to vacuum often. (modifying people)

  • This is the house that Jack built. (modifying house)

  • The book which I had not read fell on my head. (modifying book)
adjective clause

Relative pronouns link the clause with the word that the clause is modifying. Did you notice that the noun that comes directly before the clause is the noun that the clause is modifying? Good. I'm glad that you saw that. :)

The cool thing about relative pronouns is that they also act as the subject, object, or some kind of modifier within the adjective clause. Let's use this sentence as an example.

This is the house that Jack built.

The independent clause is This is the house. The relative clause is that Jack built. Notice that both clauses have a subject and a verb. That is introducing the relative clause. It is linking the word house with the whole clause. That is also acting as the direct object within the clause.

Jack = subject built = verb that = direct object

Look at the sentence diagram, and it will help you see what I mean.

relative pronoun sentence diagram

You'll find more information and sentence diagrams on the relative pronouns page.

No Relative Pronoun?

Sometimes the relative pronoun is missing from the relative clause. Don't fret! You can still have an adjective clause without the relative pronoun. Here is an example of a sentence with the relative pronoun that.

  • The instrument that I love is the piano.

The adjective clause is that I love.

Can you think of how you could express that same idea without the relative pronoun?

  • The instrument I love is the piano.

Now the adjective clause is just the words I love, but the word that is implied. It's as if the sentence says:

  • The instrument (that) I love is the piano.

Whenever words are implied in a sentence, it is called an elliptical. The technical name for a missing relative pronoun is an elliptical relative pronoun. If you want to diagram the sentence, diagram the implied relative pronoun in parenthesis.

Relative Adverbs

While most of the time relative clauses are introduced by relative pronouns, sometimes they are introduced by relative adverbs (where, when, why). Here are some examples. Notice that the clause is still modifying a noun.

  • This is the park where we played.

  • Tuesday is the day when we have pizza for dinner.

  • Our teacher told us the reason why we study grammar.
relative adverb

Hello! I'm Elizabeth O'Brien, and my goal is to get you jazzed about grammar.

We are currently on lesson 10 and my children's confidence level has increased immensely! 

- Jennifer, Homeschooling Mom

If you want to teach or learn grammar the easy way, then follow a step-by-step program that clearly lays everything out for you and allows you to move at your own pace. The Get Smart program is presented in a logical sequence, so it's not an overwhelming mishmash of information. Before you know it, you'll be a grammar and sentence diagramming pro. The whole program is online, so you have instant access to these lessons and videos. It's easy and fun. You can get it at www.GrammarRevolution.com/daily-diagrams.html

Keep learning and have fun!

Other Helpful Resources

I hope this lesson helped you learn about relative clauses!

Our Free Guide Gives You A Fun Way

To Teach And Learn The Basics v

Elizabeth O'Brien is the creator of Grammar Revolution.

Her lessons are guaranteed to give you more confidence in your communication skills and make you smile. :)

You're so smart! If you want to test your skills, check out the page on diagramming relative pronouns.

Back to Clauses

Back to English Grammar Home Page