A free English grammar reference with real chapter tests — rebuilt from scratch.
- 20 chapters across 6 parts, covering word classes, sentence grammar, tense/aspect/voice, modality and conditionals, agreement and modifiers, and mechanics/usage — each with real explanatory text, examples, a common-mistakes table, and a recap.
- 159 hand-written assessment questions (multiple choice and typed-answer), tied directly to what each chapter teaches — no templated or auto-generated questions.
- A full test that draws from every chapter for a cumulative assessment.
- Minimal progress tracking (chapters read, best score per chapter) stored locally on your device.
- No ads, no subscription, no account, works offline as an installable PWA.
npx serve .
# or
python3 -m http.server 3000