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THE IDEA, SIMPLY
The rule, with an example
A relative clause describes a noun. Who normally refers to people; which to things; whose to possession. A defining clause identifies which person or thing. A non-defining clause adds extra information and uses commas.
SEE IT IN CONTEXTThe student who organised the event thanked everyone. My tutor, who organised the event, thanked everyone.
Skills to work on in this practice
Connect details to the right noun
Choose a suitable relative pronoun
Decide whether information identifies or adds
Choose the pronoun by its role
Use
Example
Why it works
Person
The tutor who helped me is here.
Who is the subject of helped.
Thing
The book which I borrowed is useful.
Which is the object of borrowed.
Possession
The learner whose bag is blue is waiting.
Whose connects the person with their possession.
Common mistake
Check: The tutor who she helped me
Use: The tutor who helped me
Who already supplies the subject; do not add she for the same role.
How should I practise this?
Read the example and explain the choice before answering. After the exercise, write a new sentence using the same pattern. Revisit any answer you could not explain, even if you guessed correctly.
MORE PRACTICE · SAME TOPIC
Your four practice sets
4 sets · 40 exercises · about 50–70 minutes with writing and review.
10 scored questions, 20 sentence exercises and 10 writing challenges. Time depends on your pace. Start with the quiz or choose the practice you need.
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Questions 1–5 build confidence; 6–10 check transfer and detail. Use Practice for feedback after each answer, or Test yourself to check at the end.
Practise, then understand your answers
10 questions · 10 XP per correct answer · explanations included
Answer every question to see your score.0 / 10 answered
Question 1
The student ___ won the prize thanked her teacher.
who
which
where
Answer & explanation
who. Who refers to a person.
Question 2
This is the room ___ we usually study.
whose
where
who
Answer & explanation
where. Where refers to the place in which the studying happens.
Question 3
I met a writer ___ book I had read.
whose
who
which
Answer & explanation
whose. Whose connects the writer to the book they wrote.
Question 4
My laptop, ___ is quite old, still works.
that
which
what
Answer & explanation
which. A non-defining clause about a thing uses which, not that.
Question 5
Choose the correct sentence.
The person who helped me was kind.
The person which helped me was kind.
The person what helped me was kind.
Answer & explanation
The person who helped me was kind.. Who is the appropriate relative pronoun for the person.
Question 6
The woman ___ lives next door is a nurse.
where
who
which
Answer & explanation
who. Who refers to a person and is the subject of lives.
Question 7
This is the book ___ I told you about.
that
who
where
Answer & explanation
that. That can refer to a thing in a defining relative clause.
Question 8
The café ___ we met has closed.
who
whose
where
Answer & explanation
where. Where refers to a place and stands for at which in this sentence.
Question 9
I know a student ___ brother works here.
which
whose
who
Answer & explanation
whose. Whose shows possession: the brother belongs to the student’s family.
Question 10
Choose the correct sentence.
The people who arrived early got seats.
The people which arrived early got seats.
The people where arrived early got seats.
Answer & explanation
The people who arrived early got seats.. Who refers to people and acts as the subject of arrived.
Open the question that matches where you got stuck.
How do I choose who, which, that, where or when?
Use who for people and which for things. In defining clauses, that can often replace who or which. Use where for a place relationship and when for a time relationship: “the room where we meet”; “the day when we met.”
How do I use whose in a relative clause?
Whose shows possession and comes before a noun: “The learner whose notebook is missing can use mine.” Here, whose notebook means that learner’s notebook. Do not write “who’s notebook”: who’s means who is or who has.
What is the difference between where and which?
Compare “the room where we study” with “the room which we painted.” We study in a room, so where expresses the place relationship. We painted the room, so which is the object of painted. “The room in which we study” is a more formal alternative to where.