Recognized internationally as the most authoritative and comprehensive guide to contemporary Spanish for English speakers, A New Reference Grammar of Modern Spanish is an accessible, jargon-free guide to the forms and structures of Spanish as it is currently spoken and written. Examples from contemporary sources from throughout the Spanish-speaking world are used to illustrate grammatical points. Levels of usage--formal, familiar, colloquial, and popular--are indicated, and regional differences in usage are highlighted. This edition has been updated and revised to include the latest findings of the Royal Spanish Academy.