Book excerpt: Successful Spoken English demonstrates how spoken learner corpora can be used to define and explore the constituents of successful spoken English. Taking the approach that language learners can speak effectively whilst still using some non-standard forms, this book: Examines databases of transcribed speech from learners at each different CEFR level to analyse what makes a successful speaker of English; Discusses features of communicative competence, including the use of linguistic strategies, organisation of extended stretches of speech, and sensitivity to context; Demonstrates quantitative and qualitative data analysis using corpus tools, looking at areas such as word frequency; Helps to reassess the goals of language learners and teachers, and provides recommendations for teaching practice and for further research. Successful Spoken English is key reading for postgraduate students of TESOL and Applied Linguistics, as well as for pre- and in-service English language teachers.