For German, with imperfect knowledge of English, this book is sometimes not easy to read, due to the use of English technical terms. But by clear and obvious examples is this problem is not really one. This book was designed to help writers. But it also helps students in advanced English classes, where it depends on (grammatical) accuracies. (And if teachers ask how you know all this, you can pretty "indicate" with this book) The book is therefore highly recommended for those who want to improve their English or / and want to visibly improve the craft of writing.
