Contents In memory of Herman and Ethel Elbaum A word from the author 作者的话 Grammar in Context Unites Learners and Language 前言(1)《美国英语语法》带领学生走进英语的自由境界 Welcome to Grammar in Context,Spanning language and culture 前言(2)学习《美国英语语法》涵盖语言和文化 Lessons 1-15 Appendices A-K Answer key Map of the United States of America Map of North America Index