Do you have a good dictionary, a good thesaurus, a good idiom book, and a comprehensive grammarbook, and are you still fighting with the usage of words and phrases? Then is is probably the missing piece on your bookshelf, but make sure it doesn't stay there because this book is an indispensable tool for writing and even speaking. I am an ESL student and I bought this book two weeks ago. It's a great help and I use it often. It helps me to write what I think in concise English. This book goes beyond everything you can find in this category. Check it out, it's fantastic!