Free: 50 Essential English Grammar Rules (Notion Page + PDF)
A free, organized reference of the 50 grammar rules that cause the most everyday mistakes — available as a printable PDF and a copyable Notion page you can search, filter, and review.
There are hundreds of English grammar rules, but you do not make hundreds of mistakes. Most errors cluster around the same few dozen rules — tenses, articles, prepositions, agreement, and a handful of confusing word pairs. This free resource collects the 50 that matter most into one place you can search, filter, and review.
It comes in two formats: a printable PDF for offline study, and a copyable Notion page so you can turn a static list into a living reference you actually use.
Why 50, Not 500
Grammar books try to be complete. That is useful for a reference you consult once, but useless for daily learning — you cannot review 500 rules with any regularity. The 50 here are chosen by frequency of error, not by linguistic completeness. They are the rules that, once fixed, eliminate the majority of mistakes in real writing and speech.
If you master these and review them on a schedule, your error rate drops noticeably. Everything beyond them is polish.
How the 50 Rules Are Organized
The page groups rules into categories so you can study one area at a time instead of jumping randomly:
- Tenses (12 rules) — present perfect vs. past simple, when to use the continuous, narrative past, future forms.
- Articles (6 rules) — a/an/the, zero article, generalizations, and the cases that trip up most non-native speakers.
- Prepositions (8 rules) — time and place prepositions, dependent prepositions after common verbs and adjectives.
- Agreement (5 rules) — subject-verb agreement, collective nouns, quantifiers.
- Conditionals and modals (7 rules) — the four conditional types, would/could/should, hypotheticals.
- Confusing pairs (12 rules) — its/it's, affect/effect, fewer/less, who/whom, much/many, and the rest of the usual suspects.
Each rule entry follows the same compact structure: the rule in one sentence, two correct examples, one common wrong version, and a short note on why the error happens.
A Few Examples From the List
Present perfect vs. past simple. Use past simple for finished time ("I saw her yesterday"), present perfect for unfinished or unspecified time ("I've seen that film"). The mistake: using present perfect with a specific past time — "I've seen her yesterday" is wrong.
Fewer vs. less. Fewer for countable things ("fewer emails"), less for uncountable ("less time"). The mistake comes from defaulting to "less" for everything.
Dependent prepositions. Many verbs and adjectives demand a specific preposition: "depend on," "interested in," "good at." These are not logical — you memorize them. The list flags the most common ones.
Why the Notion Version Is Worth Copying
A PDF is great for printing and reading once. But a grammar reference becomes powerful when it is interactive. The Notion version turns the same 50 rules into a database, which means you can:
- Search instantly — type "preposition" or "perfect" and jump straight to the rule.
- Filter by category — study only conditionals this week, only articles next.
- Add a status property — mark each rule as Learning, Reviewing, or Mastered, and filter to see only what still needs work.
- Tag your own examples — when you make a mistake in real writing, add it under the relevant rule so your reference grows around your actual weaknesses.
That last point is the real upgrade. A generic list teaches everyone the same thing. A reference you annotate with your own errors becomes a personalized study tool.
How to Use It
- Copy the Notion page to your own workspace (or print the PDF).
- Skim all 50 once to see what you already know. Mark the obvious ones as Mastered immediately.
- Filter to what is left. Those unmastered rules are your real study list — usually far fewer than 50.
- Review on a schedule. Five rules a day, every day, cycles through the whole list every week or two.
- Add your mistakes. Every time you catch an error in your own writing, log it under the matching rule.
How Often to Review
A reference only helps if you keep returning to it. The trap with any grammar list is treating it as something you read once and shelve. These 50 rules are meant to be cycled through, not memorized in a single sitting.
A realistic rhythm: review five rules a day, every day. At that pace you pass through the entire list every two weeks, and each rule gets revisited roughly twice a month. That spacing is enough to move rules from "I recognize it" to "I use it without thinking." Mark rules you consistently get right as Mastered and drop them from rotation, which keeps your daily five focused on the rules that still trip you up.
If you prefer structure, tie the review to something you already do — five rules with your morning coffee, or five before you close your laptop. The specific time matters less than attaching it to an existing habit so it actually happens.
Turn the Reference Into a System
The free page is deliberately simple so you can build on it. Pair it with a study log and a spaced-review date property and you have the beginnings of a complete grammar learning system — the same kind serious learners build to track progress over months. Add a relation to a vocabulary or mistake database and the 50 rules stop being a standalone list and become the grammar layer of a full learning workspace.
Download the PDF for offline use, duplicate the Notion page for the interactive version, and start with the rules you got wrong, not the ones you already know. Knowledge you already have needs no review time; spend it where the errors actually are.