The course consists of four progressive books designed to take a student from beginner to a mastery of some 3,000 words.
| Feature | Original Edition (Print only) | New Edition with Audio | | :--- | :--- | :--- | | Listening practice | None | 30+ minutes per book of listening tasks | | Pronunciation guidance | None | Explicit minimal pairs & stress drills | | Self-correction for oral drills | Impossible | Possible via modeled answer tracks | | Accent exposure | None | Mixed British & American | | Total study hours per book | ~40 hours (reading/writing) | ~60 hours (integrated skills) | essential english for foreign students books 1234 audio new