1) An adjective clause embeds one sentence into another to describe people by using pronouns as the object of a verb. 2) One way to make an adjective clause is to change the object pronoun "him" to "that", which refers back to the subject "the man". 3) Object pronouns like "him" can also be changed to "who" or "whom" to form an adjective clause, with "whom" used more commonly in formal writing.