promsob✓ ไทย

Free Online English Grammar Trainer

Practice English grammar questions — free, no signup. Covers to be, pronouns, articles, prepositions, auxiliary verbs and verb patterns.

Start practicing English
Free · No signup · Unlimited questions

See it in action

English grammar question: choose the correct pronoun to complete the sentence — four answer choices on a phone
Pronouns
English grammar question: choose the correct auxiliary verb — four answer choices on a phone
Auxiliary verbs
English grammar question: choose the correct verb pattern — four answer choices on a phone
Verb patterns

What you'll practice

To Be
All tenses
Pronouns
Subject · Object · Possessive
Articles
A / An / The
Prepositions
Time · Place · Direction
Auxiliary Verbs
Do / Have / Will / Modals
Verb Patterns
Present simple · Infinitive / -ing

Every question is generated uniquely — no two sessions are the same.

Learn from every answer

Instant feedback, every time

Get it right and move on. Get it wrong and try again — the next question adapts to your level.

  • Instant visual feedback — you always know if you got it right
  • Adaptive difficulty — the engine adjusts in real time
  • No timers, no pressure — practice at your own pace
Correct answer feedback: English grammar question with the right choice highlighted green
Correct
Wrong answer: English grammar question with the selected option highlighted red
Wrong answer

Works on desktop

promsob English grammar trainer on a desktop browser showing a sentence completion question
Start practicing English — free, no signup
Start practicing English — free, no signup