Relative pronouns introduce relative clauses, which provide more information about the noun that precedes them. They connect a dependent clause to a main clause.

• Examples: who, whom, whose, which, that
• Rules:
  • Who is used for people and serves as the subject of the relative clause.
  • Whom is used for people but serves as the object in the relative clause.
  • Which is used for things and animals.
  • That is used for people, things, or animals and can be either the subject or the object of the clause.
• Examples in Sentences:
  • The man who lives next door is a doctor. (who = subject of the relative clause)
  • The woman whom I met yesterday was very kind. (whom = object of the relative clause)
  • The book that you lent me was interesting. (that = object of the relative clause)
  • She adopted a dog which was rescued from the shelter. (which = subject of the relative clause)