English Notes
Unit 4 - Peace of Mind

The Adjective Relative Clauses

Use relative clauses to give extra information about nouns smoothly and accurately.


1. From Simple Sentences to Clauses

B1 reminder: She has finished her homework.
Add detail with a relative clause: The student who has finished her homework can leave early.

Adjective relative clauses describe a noun, just like adjectives do.


2. Relative Pronouns

PronounRefers toExample
whopeople (subject)The engineer who designed the bridge is here.
whompeople (object, formal)The candidate whom we interviewed was confident.
whosepossessionI read a report whose conclusions surprised the team.
whichanimals/thingsThe laptop which crashed yesterday works again.
thatpeople/things (neutral)The idea that we discussed needs testing.
where/when/whyplaces/time/reasonThat was the moment when I realised the error.

3. Defining vs. Non-defining

  • Defining (essential information, no commas): The colleague who reviewed the data found a mistake.
  • Non-defining (extra detail, commas): My tutor, who reviewed the data, found a mistake.

Avoiding repetition

If the relative pronoun is the object, you can drop it in defining clauses: The film (that) we watched was excellent.


4. Practice

  1. Join two short sentences into one using a relative clause.
  2. Write a paragraph about your city using who, which, where, whose.
  3. Identify whether your clauses are defining or non-defining and add commas correctly.

Quick Review

  • Relative clauses act like adjectives for nouns.
  • Choose pronouns based on the noun and its role.
  • Use commas for non-essential information only.