This Grammar Guru will solve the world's problems. Or, at least, help you figure out when to use an Oxford comma. The New York Times Put your English skills to work for you! This book is ideal for intermediate and advanced (CEFR B1-C1) nonnative speakers of English seeking to increase their communication confidence and effectiveness in the workplace. Improve your precision and professionalism so your ideas shine! The book consists of 50 short quizzes which include the most common English errors made by nonnative speakers in professional environments. This fun format allows you to find your own frequent errors and fix them. You will test your skills quickly, daily, and build your language awareness and accuracy in writing and speaking English. Short, clear explanations after each quiz help you improve your knowledge of the grammar rules. Complementing the quizzes are Ellen says boxes with the same practical advice on good communication etiquette and habits that Ellen has been sharing for years with large corporate clients in New York City and beyond. Witty and humorous drawings illustrate confusing language and common misunderstandings. The focus of the exercises is on fixing your grammar and problems with word choice. Examples are pulled from every industry: finance, law, consulting, publishing, real-estate, retail, technology, energy, pharmaceutical, manufacturing, education, advertising, government, insurance, non-profit, and more. Whatever your profession or interest, you will benefit from the exercises contained in this book. If you are just looking to sharpen your English, this book is for you, too. You will be learning from a professional writer with two decades of experience teaching executives in a business setting. A language-learner herself who has studied some two dozen languages, Ellen Jovin has written this book to help motivated working adults advance their business English on their own time and at their own pace. Note that this book reflects global English usage, but spelling is American English.