This series is designed for users who want to improve their grammar skills in a business setting. It examines sentence structure in detail, including parts of speech, subject/verb agreement, use of pronouns, and irregular verbs. Punctuation is discussed, including the proper use of apostrophes, quotation marks, capital letters, numbers, and abbreviations. Advanced topics include pronoun types, adjectives and adverbs, colons and semicolons, other punctuation, and modifiers.