This book is a collection of brief but authoritative articles that describe the major errors learners of English make due to their specific language background. For each language, typcial interference phenomena on the level of phonology, orthography, grammar and lexis are described. In some cases, further information is provided (on attitudes to language learning, paraverbal behaviour etc.). The language backgrounds covered are: Dutch, Scandinavian languages, German, French, Italian, Spanish, Portuguese, Greek, Russian, Polish, Farsi, Arabic, Turkish, South Asian languages, Dravidian languages, West African languages, Swahili, Malay/Indonesian languages, Japanese, Chinese, Korean and Thai. Thus, the book provides a quick but very useful overview of the errors that learners of these languages make due to their mother tongue. Recommended to everyone who teaches English to learners with these backgrounds.