Subordinate Clauses
A clause is any part of a sentence consisting of a subject in the nominative case and a predicate containing a verb in a finite form (not a participle or an infinitive). Some clauses are used as nouns; others are used to characterize or modify nouns, pronouns, verbs, adjectives, or adverbs. Clauses used as nouns are called noun clauses. Those used as adjectives are called adjective or relative clauses. Those used to modify verbs, adjectives, or adverbs are called adverb clauses.