Book excerpt: Readers of all levels will find this guide essential. Giving examples of real usage, this book provides the basic information about grammar and punctuation that people need on a day-to-day basis. Arranged A-Z, it contains entries for standard grammatical terms as well as dealing with specificquestions of usage.In addition to explaining basic terms such as 'split infinitive', 'participle', and 'adverb', entries also discuss whether to use 'may or might', 'that or which', and 'it's or its'. The Oxford A-Z of Grammar and Punctuation gives the reader quick and easy access to the answers to these, and manyother, questions of grammar. It offers clear and coherent explanations and illustrations across a broad range of topics, and is the first port of call for any reader seeking clear, authoritative help with grammar and punctuation.The book is designed specifically to include terms designated by the National Literacy Strategy and so will also be useful for teachers and pupils.Both easy to use and comprehensive, the Oxford A-Z of Grammar and Punctuation is an essential tool for writing at home, in the office, at school, and at college.