The grammar explanations are somehow less clear than they were in the old edition, even though I cannot work out what they have changed, other than to add in random smears of light blue here and there so that it isn't just a black and white book. Despite being a larger book than the old one, the pages feel far more cramped and there is less space to squeeze the answers in than the old one had. When you try to rub something out it turns into a complete mess. It is printed on that shiny paper that weighs half a ton and that you cannot write on properly in pencil. This new edition has been completely ruined by someone who clearly has literally no experience either as a teacher or as a student of English as a foreign language. I frequently advised students to buy it, either to study with me or, more often, for independent study, as it works absolutely great for students to teach themselves grammar in a systematic way while focusing on speaking skills in lessons. It is one of the old trusty books you can always keep in your teaching bag for emergency use, as it covered all grammatical issues and explained everything so clearly. It has an explanation of the grammar on the left and exercises for the student to fill in on the right, with answers at the back. I used the old edition of this book as an English teacher for years.