A subordinate clause, also known as a dependent clause, is a group of words that contains a subject and a verb but cannot function as a complete sentence on its own. It is embedded within a complex sentence and complements the main clause, adding to the overall meaning of the sentence.
Subordinate clauses often begin with subordinating conjunctions such as "for," "as," "since," "because," "unless," "when," "where," "while," and "after," as well as relative pronouns like "that," "which," "who," "whom," "whose," and "whosever". These clauses can function as adverbs, adjectives, or nouns within a sentence.
Understanding subordinate clauses is important as it helps in identifying the structure of complex sentences and how different parts of a sentence work together to convey meaning.