This book intends to offer an overview on the English language based on case studies related to linguistics subfields. For that purpose, Chapter I focuses on language variation and change ranging not only from contextual factors, but also its standardisation. Chapter II is, meanwhile, related to English language acquisition. The field of pragmatics is dealt with in Chapter III with a study of the force of the language in advertising. Finally, the strong relation between laguage and gender is included in the final chapter.