A comparative study of English and Thai: An introduction is designed as a course book for both group and individual study. The main objective of this book is to provide background information about the major differences between English and Thai.The book discusses and compares the two languages in four linguistic areas, namely sound inventories and sound systems, word structures, phrasal and clausal structures, and pragmatic devices. include simple questions that look for short answers and essay questions that need more analytical and in-depth study. There is also a glossary which gives the definitions and examples of the main technical terms mentioned in all units of the book.