Key English Grammar Fifth Edition

Using Key English Grammar Fifth Edition: What Actually Works

I got my hands on the fifth edition of Key English Grammar by Martin Hewings about three years ago when a student asked me to recommend something between Elementary Grammar and Advanced Grammar. The book lands squarely in that B1 to B2 range, which means it covers the grammar points most adult ESL learners actually need without dragging them through material they already know or overwhelming them with constructions they'll never use. That positioning makes it genuinely useful, but it also creates some gaps you should be aware of before committing to it. The structure is straightforward. Each unit focuses on a single grammar point — past continuous, third conditional, reported speech, relative clauses, modals of deduction, and so on. The left-hand page gives you a clear explanation with examples pulled from contexts that feel slightly more realistic than the usual textbook scenarios. The right-hand page has practice exercises. Openers and closings tie the units together with review sections. What most people miss is how the fifth edition handles the gap between form and use. Earlier editions would give you the rule and call it a day. Hewings actually includes notes on when not to use certain structures, which is where a lot of learners get tripped up. Take the present perfect versus past simple distinction. The book doesn't just explain the form difference. It walks through the specific time markers that trigger each tense and flags the common L1 interference patterns you see with speakers of languages that don't have an equivalent aspect distinction.

I ran into a specific problem last year while using this book with a self-study learner who was preparing for IELTS. She was cycling through the conditionals section and kept getting the mixed conditional units wrong. The explanation in the book assumes a certain level of metalinguistic awareness that intermediate learners don't always have. Her error pattern was mixing up the third conditional with the second conditional in written tasks, which cost her marks on the writing band descriptor for grammatical range. The workaround was having her map out the time reference for each clause separately before constructing the sentence. Third conditional is past-in-the-past on both sides. Second conditional is hypothetical-present on both sides. Mixed conditionals combine the two time frames, and the book only touches this briefly. I pulled extra examples from the Teacher's Book to fill that gap, which isn't ideal because you need access to that separately, but it worked.

Practical Use Cases

The book works best as a course companion or a self-study reference for learners who already have some exposure to English and need to systematize their knowledge. It is not a first introduction to any grammar topic. If someone is encountering the present perfect for the first time, this book will move too fast. The explanations assume you can already process grammatical terminology like "auxiliary," "participle," and "modal." That said, the terminology is presented in context rather than dumped in a glossary, which is fair enough. Teachers tend to use it as a unit-by-unit supplement to a main coursebook, which is probably the most effective deployment. You assign the relevant Key English Grammar unit alongside whatever your main text is covering that week. The exercises reinforce the same points from a different angle, which forces the learner to process the material again rather than just recognizing it passively. That spacing effect is real and measurable. It usually adds about 20 to 30 minutes per week to a course but tends to improve retention on cumulative tests by a noticeable margin over a semester. Self-learners can use it effectively if they work through it sequentially and do the exercises honestly. The answer key at the back is detailed enough that you can self-correct without frustration. I'd recommend doing each unit twice within a week rather than once and moving on. The second pass catches the errors your brain glosses over on the first attempt. This is especially true for the modal verbs section, which the book handles well but which trips up most learners because the semantic range of "must," "have to," and "should" doesn't map cleanly onto most other languages.

What the Book Gets Wrong or Leaves Out

The honest limitations are worth stating upfront. The book does not cover dialectal variation in English grammar. Everything is presented through a standard British English lens, and while that is fine for most learners, it becomes a problem if you are preparing for an exam or working in an American English context. The pronunciation notes that sometimes accompany grammar points are minimal. You might find yourself needing a supplementary resource for the phonological side of things, especially around connected speech and weak forms in auxiliary verbs. The exercise types are also somewhat limited. Most are gap-fill or matching tasks. There is very little productive output practice built into the book itself. If you are using this for self-study, you will need to create your own speaking or writing tasks to actually use the grammar actively. The Teacher's Book offers some activity suggestions, but that requires either teaching the material or finding a language partner. Another gap is the handling of formulaic language and collocation. The grammar explanations are accurate but tend to treat each structure in isolation. In real usage, learners need to know that "make a decision" is the collocation, not "do a decision," and that this falls outside the grammar framework entirely. Hewings acknowledges this in passing but does not build it into the core structure. I usually supplement with a collocation resource when working through this book with stronger students.

Accessing the Material

The book is published by Cambridge University Press and is available through most academic and general retailers. The fifth edition updated several units from the fourth edition, particularly around the treatment of articles and the inclusion of more contemporary example sentences. The accompanying online resources include additional practice exercises and audio files for the listening sections, which are worth using if your learning style involves hearing the material processed aloud. There are also digital versions available, though I have found that the print edition is easier to annotate and navigate when you are doing serious study work. Screen fatigue is real, and flipping between tabs to check answers disrupts the flow more than you would think. The physical book stays open flat on a desk, which sounds trivial but matters when you are working through a 40-page unit in one sitting.

Who Should Skip It

If you are below A2 level, this book will frustrate you. The grammar explanations assume a baseline of reading comprehension that beginners do not yet have. You would be better served by something like English Grammar in Use (Raymond Murphy) at the Elementary level, which takes a more incremental approach and provides more visual support. If you are above B2, you will outgrow this quickly. The content stops at a level that advanced learners find too restrained. At that point, you are better off moving to something like Advanced Grammar in Use or Practical English Usage by Swan, which covers the same topics with more depth and handles the edge cases that intermediate books smooth over. The book is also less useful if your primary goal is exam preparation for something like Cambridge C1 Advanced or IELTS Band 7 plus. The grammar coverage is solid but not comprehensive enough for those targets. You would need to layer in additional resources regardless. I have used this book with learners across a wide range of contexts, and it consistently does what it claims to do: it gives intermediate learners a clear, organized reference for the grammar they need most. It just does not do more than that. Knowing its actual scope is what makes it useful rather than disappointing.