The purpose of this book is to describe the phonological and grammatical structures of modern Guarani, as it is spoken today in Asuncion and neighboring regions of Paraguay. An introductory section considers the linguistic classification of Guarani, gives some background on its speakers, and discusses the sources used for this study. Part I, "Phonology," establishes the phonologic components and contains sections on the syllable, the accentual system, the intonational system, and the phonemes of Guarani. Part II deals with the morphophonemics of the languages, and Part III, "Grammar," contains detailed treatments of morphology, parts of speech, non-predicative constructions, clauses, and sentences. Texts illustrating different varieties of Guarani are also included. A Guarani-English vocabulary concludes the volume. (FWB)