This is a guide to Portuguese usage for students who have already acquired the basics of the language and wish to extend their knowledge. It covers both the Brazilian and the European varieties of the language, and differentiates clearly between them. It gives detailed explanations of grammatical structures and semantic fields and, unlike conventional grammars, it gives special attention to those areas of vocabulary and grammar which cause most difficulty to English-speakers. It also contains a special chapter for students who are familiar with Spanish, highlighting key similarities and differences between the two languages. Careful consideration is given throughout to questions of style, register, and politeness which are essential to achieving an appropriate level of formality or informality in writing and speech. Clear, readable and easy to consult via its two indexes, this is an essential reference for learners seeking access to the finer nuances of the Portuguese language.