Learner English: A Teacher's Guide to Interference and Other Problems (2nd Edition) (Cambridge Handbooks for Language Teachers)

If you are on a CELTA course or similar EFL course, then this is a very useful book. It runs through the various interference problems you might encounter when teaching students of various L1 backgrounds. It methodically runs through the various english vowel and consonant pronunciation issues each learner might have, and extends its analysis into all areas of grammar, stress, intonation, vocabulary and culture. Even if you're not on a course and you have a multi-L1 class, then this acts as a reference guide for helping you to profile students and understand their potential learning difficulties with
English.

The book is split into various native language sections. Within each of these there is an analysis of that language form and how it differs from English. Various difficulties peculiar to each language are then given in reference to learning English. An invaluable guide especially when teaching students where the teacher has no knowledge of their mother tongue.