Grammar learning sequence · Step 35 of 38

Relative Clauses

A relative clause adds information about a noun. Who commonly refers to people, which to things, and that can be used in many defining clauses; punctuation depends on whether the information is essential to identifying the noun.

Understand the idea

What this grammar skill means

Relative clauses help combine sentences without repeating the noun. Children should first identify the noun being described, then choose an appropriate relative word and decide whether the information is defining or extra.

Why this skill matters

Relative clauses allow children to add precise information about a noun without starting a new sentence. They support sentence variety, compact description and the move from simple to controlled complex writing.

Core rules and patterns

  • A relative clause adds information about a noun. Relative pronouns such as who, which, that and whose help connect the clause to the noun being described.
  • Defining relative clauses identify which person or thing is meant and are essential to the reference. Non-defining relative clauses add extra information and are typically set off with commas.
  • Who is commonly used for people, which for things, and that can often replace who or which in defining clauses. Pronoun choice also depends on grammatical role and style.

See the rule in context

Worked examples

The student who solved the puzzle explained her method.

The defining relative clause identifies which student is meant.

My uncle, who lives in Kochi, is visiting us.

The comma-marked clause adds extra information about an already identified person.

This is the book that I borrowed.

That introduces a defining relative clause describing the book.

More examples

  • The girl who won the race is my cousin.
  • I found the book that you recommended.
  • My bicycle, which is ten years old, still works well.

Common mistakes to watch

  • Using who for a thing or which for a person without a reason.
  • Repeating the noun or pronoun unnecessarily inside the relative clause.
  • Adding or omitting commas without considering whether the information is essential.

Watch for these

Tricky cases and useful distinctions

  • That is common in defining relative clauses but is not normally used in the same way in non-defining comma clauses.
  • The relative pronoun can sometimes be omitted when it functions as the object in a defining clause, but not when it is the subject in the same way.

Try it

Short practice prompts

  1. 1.Combine two sentences with a relative clause.
  2. 2.Choose who, which or that.
  3. 3.Compare a defining clause with a non-defining clause.

Questions parents often ask

Quick clarifications

What is the difference between defining and non-defining relative clauses?

A defining clause is needed to identify the noun; a non-defining clause adds extra information about a noun that is already identifiable.

Can “that” refer to people?

Yes, especially in defining relative clauses, although who is also common for people.

Continue the grammar pathway

← Previous: Contrast & ConcessionNext: Sentence Fragments & Run-ons →
Independent & Dependent ClausesCompound Sentences

References and further reading

Sources used to check this grammar explanation

Tiny Steps writes the teaching explanation and examples independently. These references are provided for grammar definitions, usage patterns and further reading.

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