The Azar-Hagen Grammar Series describes how English works and uses grammar as a springboard for interactive communication practice opportunities. Clear, direct and comprehensive, the Azar-Hagen Grammar Series blends tried-and-true grammar teaching with communicative activities.Now in a new Fourth Edition, Understanding and Using English Grammar offers learners a range of new features including warm-up activities, academic readings, full-colour illustrations, new listening exercises and expanded speaking exercises. There is a full range of support materials including a workbook, two audio CDs and listening script. sakriti opis