Learning English grammar can be challenging, especially when you meet structures that contain many rules. One important grammar topic that every English learner should understand is relative clauses. They help you connect ideas, describe people and things more clearly, and make your sentences more natural.

What Are Relative Clauses?

A relative clause is a part of a sentence that gives more information about a noun. It usually begins with a relative pronoun such as who, whom, which, that, or whose.

For example:

• The girl who is wearing a red dress is my sister.
• I bought a book that explains English grammar.
• This is the house where I grew up.

The relative clause adds extra information about the noun before it.

Types of Relative Clauses

There are two main types of relative clauses:

1. Defining Relative Clauses

A defining relative clause gives essential information about the noun. Without this information, the meaning of the sentence may not be clear.

Examples:

• The student who studies hard will pass the exam.
• The phone that I bought yesterday is very expensive.

In these sentences, the relative clauses help identify exactly which student or phone we are talking about.

2. Non-Defining Relative Clauses

A non-defining relative clause gives additional information. The sentence still has a complete meaning without it. We usually use commas with this type.

Examples:

• My father, who is a doctor, works at a hospital.
• London, which is the capital of England, attracts many tourists.

How to Use Relative Pronouns Correctly

Understanding the function of each relative pronoun is the key to learning relative clauses.

Who

Use who for people when they are the subject of the clause.

Example:

• The teacher who teaches us English is very friendly.

Whom

Use whom for people when they are the object of the clause. It is more formal.

Example:

• The woman whom I met yesterday is a famous writer.

Which

Use which for things and animals.

Example:

• The computer which I use for work is very fast.

That

Use that for people, things, and animals in defining relative clauses.

Examples:

• The movie that we watched was interesting.
• The man that helped me was very kind.

Whose

Use whose to show possession.

Example:

• The student whose book is missing is looking for it.