This document defines and provides examples of different types of phrases, clauses, and sentence structures:
1) It describes prepositional phrases, appositive phrases, verbal phrases, and other types of phrases.
2) It explains independent clauses, subordinate clauses like adjective and adverb clauses, and the different types of sentences that can be formed from clauses.
3) It provides examples of common grammatical errors like unintentionally capitalizing phrases and fragments.