Relative Pronouns & Relative Adverbs
Relative pronouns and relative adverbs are special connecting words that link a describing group of words to the noun or idea it tells more about.
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A relative pronoun (who, whom, whose, which, that) or relative adverb (where, when, why) is a word that introduces a relative clause — a group of words that gives extra information about a noun in the sentence. It connects, or 'relates,' the describing part back to the person, place, thing, or idea it is describing.
Remember the rule
Ask yourself: Does the word connect back to a PERSON → use who/whom/whose. A THING or ANIMAL → use which/that. A PLACE → use where. A TIME → use when. A REASON → use why.
Key words
- relative pronoun
- A word like who, whom, whose, which, or that that connects a describing clause to a noun in the sentence.
- relative adverb
- A word like where, when, or why that connects a describing clause to a noun that is a place, time, or reason.
- relative clause
- A group of words starting with a relative pronoun or adverb that describes a noun — it cannot stand alone as a sentence.
- who
- Used to refer to people. Example: the girl who won the race.
- which
- Used to refer to animals or things, not people. Example: the book which I lost.
- that
- Used to refer to people, animals, or things. Example: the dog that barked.
- whose
- Shows belonging — used for people or animals. Example: the boy whose backpack is red.
- where / when / why
- Relative adverbs that describe a place (where), a time (when), or a reason (why) inside a describing clause.
Worked examples
Choose the correct word: The teacher ___ taught me to read retired last year. (who / which)
→ who · 'Teacher' is a person, so we use 'who' — The teacher who taught me to read retired last year.
Choose the correct word: I love the park ___ we play soccer. (where / when)
→ where · 'Park' is a place, so we use the relative adverb 'where.'
Choose the correct word: Summer is the time ___ I feel happiest. (where / when)
→ when · 'Time' signals a time period, so we use the relative adverb 'when.'
Identify the relative clause: The cat that scratched the couch belongs to my neighbor.
→ that scratched the couch · 'That scratched the couch' describes which cat — it starts with the relative pronoun 'that' and cannot stand alone.
Choose the correct word: She told me the reason ___ school was cancelled. (why / where)
→ why · 'Reason' calls for the relative adverb 'why' — it explains why something happened.
Choose the correct word: My uncle, ___ car is blue, drove us home. (whose / who)
→ whose · We need to show ownership (it is his car), so 'whose' is correct.
Common mistakes
- Using 'which' for a person — for example writing 'the boy which scored' instead of 'the boy who scored.'
- Confusing 'where' and 'when' — writing 'the day where we won' instead of 'the day when we won.'
- Forgetting that the relative clause must stay right next to the noun it describes — moving it too far away makes the sentence confusing.
- Using 'who' to show ownership instead of 'whose' — writing 'the girl who backpack fell' instead of 'the girl whose backpack fell.'
- Thinking the relative clause is a complete sentence on its own — 'that I found' is not a sentence; it needs to be attached to a noun.
FAQs
What is the difference between 'who' and 'that' when talking about people?
Both can refer to people, but 'who' is more formal and is always correct for people. 'That' can be used for people in casual writing, but when in doubt, choose 'who' for a person.
How do I know if a word is a relative pronoun or just a regular pronoun?
A relative pronoun introduces a describing clause attached to a noun. Ask: is it connecting extra information back to a noun right before it? If yes, it is a relative pronoun. For example, in 'the dog that bit me,' 'that' connects 'bit me' back to 'dog.'
Can I leave out the relative pronoun sometimes?
Yes! Sometimes 'that' or 'whom' can be dropped and the sentence still makes sense — for example, 'The book I read was great' means the same as 'The book that I read was great.' But in 4th grade, it is safer to include it.
What is a relative clause and is it always necessary?
A relative clause is the group of words the relative pronoun or adverb introduces. Sometimes it is essential (you need it to know which person or thing is meant), and sometimes it just adds bonus details. Both kinds are fine to use in your writing.
Why do we use 'whom' instead of 'who' sometimes?
'Whom' is used when the person is the object of the action, not the one doing it — like 'the friend whom I called.' In 4th grade you will mostly see 'who,' but knowing 'whom' follows 'him/her/them' is a helpful clue.
Do relative adverbs work the same way as relative pronouns?
Almost! Both introduce a clause that describes a noun. The difference is that relative adverbs (where, when, why) describe a place, time, or reason, while relative pronouns (who, which, that) stand in for the noun itself inside the clause.
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