I met this book in University and used it during three years. It gives a very thorough idea of what English syntax, grammar and semantic are in a very easy way. It can be used buy someone who has never heard of this things but the level goes high increasingly. The semantic part may be a bit complicated to neophytes but it is easyly attainable with a bit of effort.

Being used to books of this type, in my University days, I can say that this book is the best I have encountered in this particular field of my English studies. It is written for non-English speakers, making it easier to understand the theorical concepts. However, as I said before, it is not a swallow book.

If someone has problems with English syntax or grammar in general I heartily recommend this book.