This document discusses the parts of a sentence and different types of sentences. Every complete sentence contains two parts: a subject, which is what the sentence is about, and a predicate, which tells something about the subject. There are four types of sentences: declarative, which makes a statement; interrogative, which asks a question with a question mark; imperative, which gives a command with a period; and exclamatory, which shows strong feeling with an exclamation point. Examples are provided to illustrate subjects, predicates, and each sentence type.