This document provides information about different types of dependent clauses that can be used in sentences, including adverbial clauses, nominal clauses, and relative clauses. It discusses how to punctuate sentences containing these clauses, explaining that adverbial clauses at the beginning of a sentence should be separated by a comma, while other types of clauses are not usually separated by commas. Examples are provided to illustrate the different clause types and proper punctuation. Exercises at the end ask the reader to insert commas in sentences containing various clauses.