Language choice has been an area of interest to many researchers across the world over the periods but with globalization, it has become a more critical phenomenon. The book deals with the patterns of language choice and use and its constraints with reference to a typical multilingual context. It discusses why a bi-/multilingual speaker make a particular choice of language in different domains. It presents a brief survey of existing related literatures blended with the field-data analysis. It approaches the phenomena both quantitatively and qualitatively which marks the distinctiveness of this book. This book can be used by the teachers, researchers and students who want to understand the phenomena of language choice and use.