When writing relative (adjective) clauses, students often are confused about when to use who, whom, and whose. Look at the following examples to understand the difference between them. Example One: The man at whom we are looking is doing yoga. People who do yoga are flexible. The man whose body is bent like a pretzel is extremely flexible! Who are under fifteen is an example of an adjective clause in: Students who are under fifteen can participate in the soccer competition. Adjective clauses, also known as adjectival clauses or relative clauses, are a type of dependent clause that describes or modifies nouns, just like individual adjectives… Learn the meaning and definition of adjective clauses and how to identify them and use them in a sentence, with examples. Adjective clauses are used to describe a noun in the main sentence. In the example above, the adjective clause tells us about "the man." Just ignore the main sentence and look at the adjective clause when deciding whether to use "who," "whom" or "whose." Ask yourself if the adjective clause requires a subject, object, or possessive form. The adjective clauses are colored red, and the nouns or pronouns they are modifying are in bold. Key points 1. Both the relative pronouns WHO & THAT can be used in an essential adjective clause or a non-essential adjective clause. Arijit Singh, who is a brilliant singer, is from my hometown. 2tPW.