"What's the Difference Between...?" focuses on explaining the differences between two or more words that English learners have the most difficulty undertstanding, like the difference between "listen" and "hear".  The 357-page book contains 100 lessons, including lessons about the differences between "by/until", "to/for", "in time/on time", and "either/neither".  Each lesson includes detailed explanations as well as practice exercises to help you test your knowledge and understanding of each lesson.  This book has been adapted to include information and advice that is more suitable to people who are native speakers of Japanese, Korean, and Chinese languages.  The book is in PDF format and is printable.