This document discusses the active and passive voice in writing. It defines voice as the form a verb takes to indicate whether the subject performs or receives the action. The active voice has the subject performing the action, while the passive voice has the subject receiving the action. In general, the active voice is preferred as it is more direct and forceful. However, the passive voice can be used when the performer of the action is unknown or unimportant, or when the receiver of the action should be emphasized. The document provides examples of active and passive sentences and explains how to identify and transform between the two voices.