Here's a breakdown:
Relative Pronouns:
* Who: Refers to people.
* Example: "The woman who lives next door is a doctor."
* Whom: Refers to people as the object of a verb or preposition.
* Example: "The man whom I saw at the store was my neighbor."
* Whose: Shows possession.
* Example: "The car whose engine was making a strange noise was mine."
* Which: Refers to things.
* Example: "The book which I am reading is about history."
* That: Can refer to people or things.
* Example: "The house that I bought is very old."
Relative Adverbs:
* Where: Refers to a place.
* Example: "The park where we met is very beautiful."
* When: Refers to a time.
* Example: "I remember the day when we first met."
* Why: Refers to a reason.
* Example: "The reason why I am late is because of traffic."
Key Point: Adjective clauses function like adjectives, modifying nouns or pronouns. They add extra information about the noun or pronoun they describe.