The study of language in written texts and transcripts of speech is greatly helped by a student's abilityBB to identify and describe those prominent features of the grammar which make one variety of English different from another. A Course Book in English Grammar looks at many of the problems encountered by students and encourages them to find their own answers and to assess hypotheses about grammatical description. There are activities at each step, using authentic written and spoken data. Using 'real' texts avoids the faking of evidence to be found in some traditional grammar...