Combining corpus linguistics and discourse analysis, this book draws on a range of spoken and written data collected from a variety of contexts. It explores interaction in pre- and in-service education programs and analyses the spoken and written interactions of teachers with varying levels of experience who are adopting a range of modes of interaction. Both face-to-face and online modes of computer-mediated communication are explored. In doing so the book provides examples of how data can be approached and used to uncover social-interactional themes and issues, in relation to language teacher education and as a micro-context of social interaction in general. With coverage of both theory and practice, this book is a key resource for educators and postgraduate students in areas such as second language teacher education, TESOL, cross-cultural communication, sociology, philology, as well as discourse analysts.