A classic developmental skills text for intermediate to advanced students of English, Understanding and Using English Grammar is a comprehensive reference grammar as well as a stimulating and teachable classroom text.

While keeping the same basic approach and material as in earlier editions, the Fourth Edition more fully develops communicative and interactive language-learning activities. Some of the new features are:
Innovative warm-up exercises that precede the grammar charts and introduce points to be taught
Structure-based listening exercises ranging from casual speech to academic content
Academic readings that highlight the targeted grammar structures
Greatly expanded speaking practice with extensive pair, group and class work
Corpus-informed syllabus that reflects the discourse patterns of spoken and written English
Audio CDs and listening script in the back of the Student Book
The program components include the Student Book (Full Edition and Volume A and Volume B), Workbook (Full Edition and Volume A and Volume B), Chartbook, Teacher's Guide, and Test Bank. Click on "Course-Specific Resources" on the left for more details.

For an online workbook, see Understanding and Using English Grammar Interactive. - from Amzon