This document discusses parts of speech and tenses. It defines a word as a group of letters that have a complete meaning. It defines a sentence as a group of words that have a complete sense. It lists the four kinds of sentences as assertive, interrogative, imperative, and optative. It states there are nine types of parts of speech - nouns, pronouns, adjectives, verbs, adverbs, prepositions, conjunctions, and interjections. It briefly mentions tense and lists some common verbs.