B1 · Intermediate

Relative Clauses: The Extra Information

Who, which, that, whose: the bridge words that attach extra information — the woman who lives next door, the book which I bought, the boy whose dog ran away.

01

Relative Clauses

The bridge to extra information

A relative clause is a small sentence glued onto a noun by a bridge word. The bridge word tells you what the clause is about.

👤

Who — people

the person does or did something

The woman who lives next door is a doctor

📦

Which — things

the thing does or did something

The book which I bought is great

🧩

That — people or things

the all-rounder bridge

The phone that I lost was new

🔑

Whose — possession

the owner joins the clause

The boy whose dog ran away is crying

⚠️ Who for people, which for things, that for both, whose for possession.

02

The Formula

noun + bridge word + clause

The bridge word starts the clause and the clause travels with the noun. One sentence, one noun, one extra story.

⚙️The same skeleton in all three forms
Who — people
The womanwholivesnext dooris a doctor

The womanwho lives next dooris a doctor

Which — things
The bookwhichI boughtwas cheap

The bookwhich I boughtwas cheap

That — people or things
The phonethatI lostwas new

The phonethat I lostwas new

Whose — possession
The boywhosedogran away

The boywhose dog ran awayis crying

03

Common Mistakes

Four bridge slips

The bridge collapses when a second pronoun sneaks in, when who and which swap places, or when who’s tries to do whose job.

The woman who she called me is here.

The woman who called me is here.

💡 No extra pronoun after who — who already carries the person.

The book which I bought it is great.

The book which I bought is great.

💡 Which already carries the object — drop it.

The man which lives here is kind.

The man who lives here is kind.

💡 People take who (that is also fine).

The girl who's bag is lost is crying.

The girl whose bag is lost is crying.

💡 whose = possession. who's = who is.

04

Quick Quiz

Test what you just learned

Three minutes, five questions — check what stuck. No essay questions, we promise.

Question 1 / 50 / 5

The man ___ fixed my car is my uncle.

💡 Extra info2 sections
05

Who, Which, or Whose?

One question picks the bridge

The noun decides the bridge word. Ask what the clause is about.

Is it about a person or about a thing?
Person — who / thatthe man who sings
Thing — which / thatthe book which I read
Is the clause about ownership?
Yes — whosethe boy whose bike is blue
No — who / whichthe friend who lives here
06

The Bridge Words

Match the bridge with its job

Four bridge words, four jobs. Learn the pairings and the clause builds itself.

who
peoplethe woman who...
which
thingsthe book which...
that
people or thingsthe safest bridge
whose
possessionthe girl whose...

⚠️ Who for people, which for things, that for both, whose for owners.

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