Using who, whom, whose, which, and that to connect clauses
Noun + relative pronoun + clause
Same structure; negation in the relative clause
Relative pronouns rarely start questions; use in statements
💡 That can replace who/which in defining clauses. Whom is formal; who is often used instead.
✓The teacher who helped me was kind.
✗The teacher which helped me was kind.
Use who for people.
✓The book that I read was great.
✗The book who I read was great.
Use that/which for things.
✓The girl whose bag was stolen cried.
✗The girl who's bag was stolen cried.
Whose = possession; who's = who is.