(Who, whom, whose, which, that)

Study the sentences in (A) and see how they are linked up to (B)

A) I saw the woman. She stole the bag.

B) I saw the woman who stole the bag.

A) I have found the keys. I lost them.

B) I have found the keys which I lost.

A) This is the man. His bag was stolen.

B) This is the man whose bag was stolen.

If a pronoun joins two statements about the same person or thing, we call it a relative pronoun. We use them to join sentences to nouns. These pronouns include who, whom, whose, which and that.

Who, whom and whose are used to refer to persons while which refers to things. That can be used to refer to persons or things.