This document discusses the different types of sentences according to their use and form. It defines a sentence and explains that sentences are classified as declarative, imperative, interrogative, or exclamatory based on their use. Declarative sentences state facts, imperative sentences give commands, interrogative sentences ask questions, and exclamatory sentences express strong emotions. The document provides examples for each type and a practice test to identify the sentence type. It also notes that sentences are classified according to their form, which will be covered in the next section.