The supplemental materials are also great, especially for people working with a tutor. There is a speech profile to be completed by the student and reviewed by an instructor or tutor, which can help students focus on their strengths and weaknesses. There is also a good review of the International Phonetic Alphabet (IPA) which is very useful for students who are not familiar with this transcription system. There are also sections which give an overview of the vowel and consonant sounds of American English. It also has good suggestions for independent learning, which are great to give students who have finished a class and are wondering what to do next.

The book can be used with or without the tapes. You do need to have access to a native speaker to make use of many of the exercises. This could be your teacher or tutor, or even just an American friend. I don't see this a weakness, because anyone studying English needs regular native speaker feedback , but it is something to be aware of if you are studying on your own.

Overall, one of the best pronunciation books available.