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: B1
B1 Confusable-words

Color vs. Colour: What's the Difference?

Match your spelling (`color` or `colour`) to your audience for clarity and consistency. It’s all about context!

  • • American English uses `color`, British English use...
  • • The 'u' is dropped in AmE for words ending in `-ou...
12 examples 8 exercises 8 FAQ
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B1 Prepositions

Completing Tasks (Carry out)

Use `carry out` to emphasize task execution, making your English sound purposeful.

  • • Execute or complete a specific task.
  • • Verb 'carry' plus particle 'out'.
12 examples 8 exercises 8 FAQ
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B1 Verb Moods

Could: Polite Requests

Mastering could for requests unlocks a new level of polite, effective communication in English.

  • • Could makes requests polite, not about ability.
  • • Form: `Could + Subject + Base Verb + ?`
12 examples 8 exercises 8 FAQ
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B1 Verb Moods

Could: Talking About Your Past Skills

Could expresses general past abilities; `was able to` is for specific past successes.

  • • Express general past abilities or skills.
  • • Formation: Subject + could + base verb.
12 examples 8 exercises 8 FAQ
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B1 Verb Tenses

Counting Experiences: First, Second, Third Time

Master `It's the first time I've...` to confidently share your unique life experiences.

  • • Count experiences with 'It's the Nth time I've...'...
  • • Form: 'It's + the + ordinal + time + Present Perfe...
12 examples 8 exercises 8 FAQ
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B1 Confusable-words

Daytime vs. Day-time: What's the Difference?

`daytime` is the time itself; `day-time` describes a thing that happens during that time.

  • • `daytime` (one word) is a noun for the period of l...
  • • `day-time` (hyphenated) is an adjective that descr...
10 examples 8 exercises 10 FAQ
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B1 Confusable-words

Deer vs. Deers: What's the Difference?

One deer, two deer. The plural of deer is deer.

  • • The plural of 'deer' is almost always 'deer'.
  • • No need to add '-s'; the singular and plural forms...
12 examples 8 exercises 8 FAQ
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B1 Prepositions

Delaying Tasks: How to use 'Put off'

Master "put off" to sound natural when delaying tasks or events, especially with separable pronouns.

  • • "Put off" means to delay or postpone.
  • • Formed by "put" + object + "off" or "put off" + ob...
10 examples 8 exercises 8 FAQ
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B1 Verb Moods

First Conditional: Unless = If Not

Unless streamlines First Conditional sentences, making your negative conditions clear and natural.

  • • Unless means 'if not' in conditional sentences.
  • • Use unless + positive present simple verb.
12 examples 8 exercises 8 FAQ
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B1 Gerunds & Infinitives

Forgot to do vs. Forgot doing

Mastering `forgot to do` vs. `forgot doing` unlocks precision in expressing memory and tasks.

  • • The choice depends on if the action happened or no...
  • • `Forget + to + verb` for uncompleted intentions.
12 examples 8 exercises 8 FAQ
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B1 Grammar

Future Continuous: Will Be Doing (In Progress at a Future Time)

The future continuous (will be + -ing) describes an action that will be in progress at a specific future time. It can also be used to make polite enquiries about plans.

  • • Structure: will be + verb-ing — This time tomorrow...
  • • Use 1: action in progress at a specific future tim...
5 examples 8 exercises 8 FAQ
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B1 Prepositions

Getting Along (Phrasal Verb: Get along/on)

`Get along/on` describes relationship harmony or conflict. Master it for natural social conversations!

  • • To have a friendly relationship with someone.
  • • Subject + `get along/on` + (adverb) + with (object...
12 examples 8 exercises 8 FAQ
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B1 Verb Moods

Giving Advice and Recommendations (Should)

Should is your go-to modal verb for giving friendly advice and expressing what's a good idea.

  • • Use 'should' for advice, recommendations, suggesti...
  • • Always 'should' + base form of the main verb.
12 examples 8 exercises 8 FAQ
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B1 Confusable-words

Gooses vs. Geese: What's the Difference?

The plural of one `goose` is two or more `geese` — never `gooses`.

  • • `Geese` is the plural of `goose`; `gooses` is inco...
  • • This is an irregular plural formed by changing the...
12 examples 8 exercises 8 FAQ
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B1 Confusable-words

Hair vs. Hairs: What's the Difference?

Use `hair` for the whole mop on your head; use `hairs` for the individual strands.

  • • Use `hair` as an uncountable noun for the hair on...
  • • Use `hairs` as a countable noun for individual, se...
10 examples 8 exercises 8 FAQ
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B1 Confusable-words

Has vs. Had: What's the Difference?

Match `has` with present singular and `had` with all past actions for clear communication.

  • • "Has" is present (he/she/it); "Had" is past (all s...
  • • Both are forms of "to have"; indicate possession o...
12 examples 8 exercises 8 FAQ
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B1 Grammar

Have Something Done: Arranging for Someone Else to Do It

"Have something done" means you arrange for someone else to do something for you. Structure: have + object + past participle. It is NOT the same as doing it yourself.

  • • Structure: have + object + past participle — I had...
  • • Meaning: you arrange for someone else to do it (yo...
5 examples 8 exercises 8 FAQ
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B1 Confusable-words

He-has vs. He-have: What's the Difference?

Mastering "has" for he/she/it and "have" for others ensures correct subject-verb agreement.

  • • "Has" for he/she/it, "have" for others.
  • • Form of "to have" verb, varies by subject.
12 examples 8 exercises 8 FAQ
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B1 Confusable-words

House vs. Home: What's the Difference?

A house is a structure; a home is where your heart is.

  • • A 'house' is a physical building you can touch.
  • • A 'home' is an emotional concept of belonging and...
11 examples 8 exercises 8 FAQ
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B1 Confusable-words

Housewife vs. Homemaker: What's the Difference?

`Homemaker` is the modern, inclusive choice; `housewife` is dated and specific to married women.

  • • `Housewife` is a dated term for a married woman ma...
  • • `Homemaker` is the modern, gender-neutral term for...
11 examples 8 exercises 8 FAQ
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B1 Prepositions

How to Use 'Back Up' (Move, Support, Save)

Mastering `back up` means understanding its diverse meanings and how context shapes its use.

  • • "Back up" is a versatile phrasal verb meaning move...
  • • It's often separable; pronouns always go between b...
12 examples 8 exercises 8 FAQ
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B1 Prepositions

How to Use 'Cut Down On' (Reducing Habits)

Mastering `cut down on` helps you talk about reducing habits naturally and effectively.

  • • Reduce the amount or frequency of a habit.
  • • Pattern: `cut down on` + noun or gerund.
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

1

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

Track & Progress

Your progress is saved automatically. Complete chapters, unlock new levels, and watch your grammar mastery grow.

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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