This document discusses the basic elements of a simple sentence: a subject, which is who or what the sentence is about, and a predicate, which is the action being performed by the subject. It provides examples of simple sentences with clearly identifiable subjects ("the little dog", "the cute baby") and predicates ("barked", "cried") to demonstrate these core components. The purpose is to help the reader understand that every sentence needs both a subject and a predicate in order to be grammatically complete.