Every part in this book, such as texts, grammar review and writing practice, has combined the characteristics of economics and trade. In this book, systemic grammar review, plenty of explanations and differentiations of words are provided; comprehensive training on listening, speaking, reading and writing is emphasized. There are 12 lessons in two volumes. In each lesson, there is a main text, explanations of economic terms, explanations and differentiation of words, grammar review, tips on encyclopedic knowledge as well as comprehensive training on listening, speaking, reading and writing. In the Exercise Book, the corresponding exercises for each part are provided and the answer keys are attached at the back of the book. There are recordings of the main text, text of speaking, text of listening and new words.