Is It a Phrase or a Clause? It Matters

A dependent clause has a subject and a verb; a phrase does not. …after lunch (phrase) …after we ate lunch (clause) …since Friday (phrase) …since I left Friday (clause) …before the session (phrase) …before the session ended (clause) The difference matters. For example, at the beginning of a sentence, the phrases above do NOT take a comma; the clauses do. …