About GrammarError.com
We built GrammarError.com around a simple idea: all the English grammar practice you need, in one place, with clear explanations for every answer.
Whether you're a student preparing for an exam, a professional tightening up business writing, or someone learning English as a second language — the goal is the same: understand grammar well enough that the rules feel natural.
What you can do here
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Find out where you stand. Our CEFR grammar test draws from a large question pool, so every attempt is different. Take it once to get a baseline, then come back later to see how far you've come.
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Practice what matters to you. Browse challenges by grammar topic — from verb tenses and complex sentences to IELTS preparation. Each challenge is tagged so you can zero in on exactly the area you want to work on.
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Actually understand the answers. Every question comes with an explanation of the grammar rule behind it. The point isn't just to get a score — it's to walk away knowing something you didn't before.
The site works on any device. Create an account to save your progress and pick up where you left off.