"Grammaire du francais, comprendre, reflechir, communiquer" is both a learner's manual and a reference book throughout which learners are asked to reflect on how the French language functions. A carefully established progression, based on authentic documents, gives learners the practice they need to mobilise and to consolidate their communication skills. "Grammaire du francais, comprendre, reflechir, communiquer" may be used in the classroom or in self-study.