Yes. You can start learning on Learnr for free. Learnr Pro unlocks higher daily limits and extra features.

Learn English Grammar

Know why a sentence is correct, not just that it sounds right.

Free to start. Built from a single prompt. No credit card.

English grammar is the system of rules for how words combine into sentences, from parts of speech and verb tenses to clauses and punctuation. Native speakers use most of it by instinct but often cannot explain it, which is why comma splices, dangling modifiers and apostrophe errors are so common in writing. Learning a small set of concepts, especially what makes an independent clause, explains a surprising number of rules at once. Learnr builds a personalized grammar course for native speakers and learners alike, with quick sentence-fixing exercises in every lesson.

How to learn English Grammar, step by step

Learn the parts of speech by function. Rather than memorizing definitions, label the words in real sentences and notice that the same word can act as different parts of speech. "Run" is a verb in one sentence and a noun in the next.
Master the independent clause. Learn to spot a clause that has a subject and verb and can stand alone. This one concept explains fragments, run-ons, comma splices and when a semicolon is allowed.
Drill subject-verb and pronoun agreement. Practice sentences with tricky subjects, such as "each of the students," collective nouns and phrases between the subject and verb. Then check that every pronoun clearly refers to one noun.
Learn punctuation as tools with jobs. Study when commas set off introductory phrases and nonessential clauses, how semicolons join related independent clauses, what colons introduce, and the difference between possessive apostrophes and plurals, such as its versus it's.
Fix modifiers and parallel structure. Hunt for dangling and misplaced modifiers, like "walking to school, the rain started," and for lists where items do not share the same grammatical form. These are common in otherwise good writing.
Practice on real sentences daily. Grammar sticks through use. Short Learnr exercises where you correct and rewrite sentences, plus editing your own writing with each new rule in mind, turn the rules into instinct.

What you'll learn

Identify the parts of speech and how they function in a sentence
Recognize independent and dependent clauses
Fix comma splices, run-ons and sentence fragments
Use commas, semicolons, colons and apostrophes correctly
Keep subjects, verbs and pronouns in agreement

What's inside your English Grammar course

A sample path Learnr builds for English Grammar. Your real course adapts to your goal and level.

1. Parts of speech and sentence roles
2. Subjects, predicates and clauses
3. Verb tenses, voice and agreement
4. Pronouns and modifiers
5. Punctuation that joins and separates
6. Common errors and style choices

How long does it take to learn English Grammar?

Native speakers can learn the core of English grammar and punctuation in about 3 to 6 weeks at a few hours a week. English learners usually build grammar over many months alongside vocabulary and listening, depending on their starting level.

What you need before you start

Basic reading ability in English. Native speakers need nothing more, and English learners will get the most from this once they can read simple paragraphs comfortably.

Common mistakes to avoid

Joining two complete sentences with only a comma. Use a period, a semicolon, or a comma with a conjunction like and, but or so.
Treating style preferences, like never splitting an infinitive or never ending a sentence with a preposition, as hard rules. Modern usage guides accept both.
Adding apostrophes to plurals, as in "apple's for sale." Apostrophes show possession or contractions, not simple plurals.

How Learnr builds your course

Type your topic

Tell Learnr you want to learn English Grammar, or get as specific as you like.

Get a personalized course

Learnr instantly builds a full English Grammar course tailored to your goal and skill level.

Learn and level up

Move through bite-sized lessons and interactive practice, earning XP and keeping your streak.

English Grammar questions, answered

Is this course for native speakers or English learners?

Both. Tell Learnr your level and goals, and the course adjusts, focusing on writing mechanics for native speakers or on tenses, articles and word order for learners.

Does grammar really matter if people understand me?

In conversation, less so. In writing, grammar errors can change meaning, slow readers down and affect how credible you seem in school and work.