The document defines the five elements of a sentence: subject, verb, complement, object, and adverb. It provides definitions and examples for each element. The subject is the person, place, or thing performing the action. The verb describes the action or state. The complement completes the meaning of the verb and describes the subject or object. The object receives the action of the verb. An adverb modifies a verb, adjective, other adverb, or the whole sentence. Examples are given to illustrate each element.