Noun Clauses

A noun clause is a dependent clause that can be used the same ways as a noun or pronoun. It can be a subject, predicate nominative, direct object, appositive, indirect object, or object of the preposition. They may begin with a relative pronoun or by, whether, when, where, why, or how.

Examples:
Whoever wins the race will receive the trophy.
(A noun clause serves as the subject of the sentence.)

This grade is what I deserve.
(A noun clause serves as the subject complement.)