It has been our cherished project to bring out a grammar book for high school and intermediate students. The non-availability of suitable writers delayed our project. At last we chanced upon two eminent English Teachers, Sri K.V.Purneswararao and Sri M.V.Chalapatirao, and requested them to write a grammer book. This one is the result of their relentless efforts over a considerable period of time. We hope this book will enable the studentss to improve their speaking and writing skills in English by acquiring the right concepts of grammar. We will b very thankful if any suggestions are sent to us for improving the contents of this book.