Practical English Usage by Michael Swan, published by Oxford University Press, is one of the most trusted reference books on English grammar and usage. Teachers often call it “the teacher’s bible”. The current edition is the fourth (2016), which is also available as an online version.
Who Is It For?
- Upper-intermediate and advanced learners (roughly B2 and above).
- English teachers who need quick, reliable answers to students’ questions.
- Writers and editors who want clear guidance on correct usage.
It is not ideal for beginners, who will find a practice book such as English Grammar in Use easier.
How the Book Is Organised
The book is arranged in short, numbered entries grouped by topic (verbs, nouns, adjectives, sentence structure and more), followed by sections on vocabulary problems, such as the difference between see, look and watch. A detailed index lets you find almost any question quickly.
Strengths
- Clear, short explanations with natural examples.
- Focuses on real problems learners have, including common mistakes marked with an asterisk.
- Covers British and American differences, and formal and informal style.
- Excellent for checking a doubt in seconds.
Limitations
- It is a reference book with no practice exercises (separate exercise books have been published).
- Too detailed for lower-level learners.
How to Use It
- Keep it on your desk and look up questions as they come up.
- Read one entry a day on a topic you find difficult.
- Teachers: read the entry before teaching a grammar point to anticipate questions.
Verdict
If you are an advanced learner or teacher and can buy only one grammar reference, this is a strong choice. Pair it with a practice book for exercises.
Compare: Oxford Guide to English Grammar and Grammar for English Language Teachers.


