English Grammar Hub

Understand English Grammar Faster

Browse the grammar system by level and category, then open clear explanations with practical examples.

780 Total Rules
126 Chapters
7 CEFR level
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Understand English Grammar Faster

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Active filters: CEFR level: B2
B2 Grammar

Obligation and Necessity: Must, Have To, Need To

Must expresses personal obligation or strong recommendation. Have to expresses external obligation (rules, laws). Need to is neutral necessity. In the past, use had to for all three.

  • • must: personal obligation or strong recommendation...
  • • have to: external obligation (rules, laws, others...
5 examples 8 exercises 8 FAQ
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B2 Verb Moods

On Condition That (Formal Stipulation)

Use `on condition that` to set clear, formal requirements for an agreement or action to happen.

  • • Used for formal deals and strict rules.
  • • Stronger and more official than the word if.
10 examples 8 exercises 8 FAQ
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B2 Conjunctions & Connectors

Opposite Ideas: Using 'Conversely' and 'By Contrast'

Mastering 'conversely' and 'by contrast' adds sophistication and clarity to your contrasting ideas.

  • • Connects opposite or differing ideas smoothly.
  • • Place between two independent clauses, with punctu...
12 examples 8 exercises 8 FAQ
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B2 Verb Moods

Ought To: Advice & Duty (ought to)

Use `ought to` for advice with a conscience – it implies what's right or expected.

  • • Expresses strong advice, duty, or moral obligation...
  • • `Ought to` + base verb; `ought not to` for negativ...
12 examples 8 exercises 8 FAQ
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B2 Advanced Syntax

Participle Clauses: Mastering Sentence Efficiency

Master participle clauses to make your English more efficient, elegant, and sound truly native.

  • • Condenses clauses using verb forms for efficient c...
  • • Formed with present (-ing), past (-ed), or perfect...
12 examples 8 exercises 8 FAQ
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B2 Verb Moods

Past Guesses: Must Have + V3

Use `must have + V3` for confident, logical deductions about past situations based on strong evidence.

  • • Strong guess about past events, based on evidence.
  • • Formed by `must + have + past participle (V3)`.
12 examples 8 exercises 8 FAQ
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B2 Verb Tenses

Past Perfect: Simple vs. Continuous (Sequencing)

Mastering Past Perfect tenses helps you tell clear, logical stories about sequenced past events.

  • • Sequences past events: one happened before another...
  • • Formed with `had + past participle` or `had been +...
12 examples 8 exercises 8 FAQ
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B2 Verb Moods

Past Possibilities (Could Have)

Use `could have` to discuss actions that were possible in the past but did not actually occur.

  • • Refers to past possibilities that didn't happen.
  • • Expresses regrets or missed opportunities.
10 examples 8 exercises 8 FAQ
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B2 Grammar

Permission: Can, May, Be Allowed To, Be Supposed To

Can is the most common way to give or ask for permission. May is more formal. Be allowed to describes permission as a rule. Be supposed to describes expected behaviour.

  • • can: everyday permission — You can leave early tod...
  • • may: formal permission — Guests may use the pool u...
5 examples 8 exercises 8 FAQ
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B2 Sentence Structure

Pointing Out Arrivals: Locative Inversion (Here comes...)

Spice up your English by dramatically announcing arrivals and departures with `Here comes...` or `There goes...`!

  • • Locative inversion highlights immediate arrivals o...
  • • Pattern: `Here/There` + `verb of motion` + subject...
11 examples 8 exercises 8 FAQ
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B2 Questions & Negation

Politeness at Its Best: Master Indirect Questions

Master indirect questions to elevate your English politeness and sound effortlessly sophisticated in diverse situations.

  • • Make questions polite, less direct.
  • • Polite phrase + statement word order.
12 examples 8 exercises 8 FAQ
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B2 Adjectives & Adverbs

Position of Adverbs: Manner & Degree

Precise adverb placement boosts clarity and natural fluency in your English.

  • • Manner adverbs show how, degree adverbs show inten...
  • • Manner after verb/object; degree before adj/adv/ve...
12 examples 8 exercises 8 FAQ
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B2 Grammar

Possessive 's with Time and Distance Expressions

The possessive 's is used not just with people and animals, but also with time expressions (an hour's drive), distances (a mile's walk), and certain fixed phrases.

  • • Time + 's: a day's work, two weeks' holiday, an ho...
  • • Distance + 's: a mile's walk, a stone's throw (awa...
5 examples 8 exercises 8 FAQ
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B2 Grammar

Present Perfect Simple or Continuous: Which One to Use?

Present perfect simple focuses on a completed result. Present perfect continuous emphasises duration or an ongoing/recently stopped activity.

  • • Simple: I have written three reports. (completed —...
  • • Continuous: I have been writing reports all mornin...
5 examples 8 exercises 8 FAQ
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B2 Grammar

Pretty, Quite, Rather, Fairly: Degree Adverbs with Attitude

These four adverbs all mean 'to some degree' but differ in strength and attitude. Rather often implies a negative view; quite can mean 'completely' with certain adjectives; pretty is informal.

  • • fairly: mild, neutral — fairly good, fairly easy (...
  • • pretty: informal, slightly stronger than fairly —...
5 examples 8 exercises 8 FAQ
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B2 Grammar

Prohibition vs. No Necessity: Mustn't vs. Don't Have To

Mustn't = prohibition (it is forbidden — do NOT do it). Don't have to = no obligation (you are free to choose — it is not required). These are opposites in meaning.

  • • mustn't: prohibition — it is forbidden — You mustn...
  • • don't have to: no obligation, free choice — You do...
5 examples 8 exercises 8 FAQ
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B2 Grammar

Reflexive and Reciprocal Pronouns: Myself, Each Other, One Another

Reflexive pronouns (myself, yourself, etc.) refer back to the subject. Reciprocal pronouns (each other, one another) show that two or more people do something to each other.

  • • Reflexive: myself, yourself, himself, herself, its...
  • • Use reflexive when subject and object are the same...
5 examples 8 exercises 8 FAQ
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B2 Verb Moods

Regrets & Results: Using 'Would Have'

Unlock the past conditional to express what might have been, for better or for worse.

  • • Hypothetical past results that didn't happen.
  • • Formed by `would + have + past participle`.
12 examples 8 exercises 8 FAQ
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B2 Relative Clauses

Relative Adverbs (where, when, why)

Master where, when, and why to link ideas and sound effortlessly fluent.

  • • Connect places, times, and reasons using where, wh...
  • • Form: Noun + relative adverb + clause for added de...
12 examples 8 exercises 8 FAQ
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B2 Passive & Reported Speech

Reporting Verbs Patterns (suggest doing, accuse of)

Mastering reporting verb patterns boosts your fluency and precision in English communication.

  • • Report speech, actions using specific verb-gerund...
  • • Patterns: Verb + -ing, Verb + Prep + -ing, Verb +...
12 examples 8 exercises 8 FAQ
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B2 Passive & Reported Speech

Reporting with the Passive (It is said that...)

Master passive reporting to sound formal, objective, and confidently share information without specific sources.

  • • Indirectly share common knowledge or news.
  • • Formed with 'It is said that' or 'Subject is said...
12 examples 8 exercises 8 FAQ
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B2 Verb Tenses

Scheduled Future (be due to, be set to)

Use `be due to` or `be set to` for pre-arranged future events, making your schedule sound official!

  • • Expresses events pre-arranged, scheduled, or highl...
  • • Formed with be + `due to`/`set to` + base verb.
12 examples 8 exercises 8 FAQ
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Why Learn English Grammar?

Grammar is the foundation of language fluency. Without understanding grammar patterns, you can memorize vocabulary but struggle to form correct sentences. Here's why structured grammar study matters:

Build Accurate Sentences

Move beyond memorized phrases. Understand the rules so you can create original, correct sentences in any situation.

Pass Language Exams

Grammar is tested in every major language exam — IELTS, DELE, DELF, JLPT, HSK, TOPIK, and more. Our CEFR-aligned curriculum maps directly to exam requirements.

Understand Native Speakers

Knowing grammar helps you parse complex sentences, understand nuance, and follow conversations even when speakers use advanced constructions.

Progress Faster

Students who study grammar systematically reach fluency faster than those who rely on immersion alone. Structure accelerates learning.

How Our English Grammar Course Works

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Choose Your Level

Start with your CEFR level — from A0 Zero Point to C2 Mastery. Not sure? Begin at A0 and progress at your own pace.

2

Study Structured Chapters

Each chapter covers a grammar topic with clear explanations, pattern tables, and real-world example sentences.

3

Practice with Exercises

Test your understanding with interactive exercises — fill-in-the-blank, multiple choice, sentence building, and translation practice.

4

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Frequently Asked Questions About English Grammar

SubLearn covers 780 English grammar rules organized across 7 CEFR proficiency levels (from A0 to C2), spanning 126 structured chapters. Each rule includes clear explanations, real-world examples, and interactive practice exercises.

Our English grammar curriculum covers CEFR levels from A0 to C2. Each level is designed to match your current proficiency — beginners start with basic sentence patterns at A1, while advanced learners tackle nuanced structures at C1-C2.

Yes! All English grammar rules, explanations, and examples are completely free to access. You can browse the full curriculum, read detailed explanations, and practice with exercises at no cost.

Grammar is organized into 126 thematic chapters following the CEFR framework. Each chapter groups related rules together — for example, verb tenses, sentence structure, or particles — so you can learn related concepts in a logical sequence.

Yes! Create a free account to track which grammar rules you've studied, see your progress across all CEFR levels, and pick up exactly where you left off. Your learning progress syncs across devices.

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