Grammar is a very old field of study. Did you know that the sentence was first divided into subject and verb by Plato, the famed philosopher from ancient Greece? That was about 2,400 years ago! Ever since then, students all over the world have found it worthwhile to study the structure of words and sentences. Why? Because skill in speaking and writing is the hallmark of all educated people. Lesson by lesson, this book provides basic instruction in the eight parts of speech—nouns, pronouns, verbs, adjectives, adverbs, prepositions, conjunctions, and interjections—as well as the standard patterns of English sentences.