An awareness of diachronic development at all levels of language can enhance the learning and teaching of language and translation. This book illustrates this approach, adopting a variety of research methodologies. A diachronic perspective is applied to the pedagogy of English spelling, translation studies, bilingual education, approaches to teaching culture in CLIL, the development of a new multimodal genre, the lyrics video, aspects of modality in legal English, and the meaning shifts through time of the American lexeme dude.