It is on the basis of Title I chose this book to my grandchildren, college and high school teenagers. If this book is very interesting, especially for any "follower" of Grévisse-, formulating explanations are too often unsuited to the current level language students of secondary schools. (Two random examples: "However, the invariability would be lawful if ..." or "the paronymy between these two terms ..."). However, I recommend to all those and all those passionate about our beautiful language, who already have a good knowledge and want to remember all the subtleties and pretty pitfalls.