牛津语法 oxford practice grammar Advanced SB-PDF

原版英语语法好书《Oxford Practice Grammar》，
这是一套很棒的英语语法学习教程，国外原版。

内容介绍：

Who is this book for?
Oxford Practice Grammar is for students of English
at a middle or ‘intermediate’ level. This means
students who are no longer beginners but who are
not yet expert in English. The book is suitable for
those studying for the Cambridge First Certificate
in English. It can be used by students attending
classes or by someone working alone.
What’s new about this edition?
There have been many changes in both the content
and design of the book.
The number of units has been increased from
120 to 153. There are more two-page units and
fewer four-page units.
The 25 tests are a new feature. There is also a
Starting test to help students find out what
they need to study.
There are many more dialogues and
illustrations on the explanation pages. Many of
the examples and situations are new.
• There are many new exercises and more
different types of exercise.
The number of appendices has been increased
from two to six.
This new edition features a group of characters
whose lives are the basis for many of the
situations in both the explanations and the
exercises. (But you can still do the units in any
order.)