Rudy Coppieters & Edward . Woods 
The Communicative Grammar of English Workbook [PDF ebook] 

The companion text to A Communicative Grammar of English (CGE), this workbook presents an opportunity for practising the points raised in the main grammar.

The units follow the order of sections in Part One and Part Two of CGE; at the beginning of each sub-unit there is a brief explanation of a particular structure followed by a series of tasks, ranging from gap filling exercises to rewrite assignments and conversational passages in which the student is invited to participate.　

With authentic material and a variety of different task types graded by difficulty, this is an indispensable resource for teachers and advanced students with a good grounding in the grammar of the language.