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English Grammar for Clear Sentences, a free language course on Tomo

English Grammar for Clear Sentences

Learn how English sentences actually fit together so you can write with clarity and confidence. Master the core subject-verb engine, attach details cleanly, and fix the everyday glitches that confuse readers.

Like Duolingo, but for English Grammar for Clear Sentences. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

A short one: 11 levels across 2 sections, about 22 minutes end to end, roughly 4 days at five minutes a day. It moves through The Core Engine and Connecting and Polishing. It starts from scratch.

11 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Barnaby the Bookworm, the guide who teaches the English Grammar for Clear Sentences course
English Grammar for Clear Sentences
with Barnaby the Bookworm
11
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in English Grammar for Clear Sentences

  • A complete sentence must name who or what is acting (the subject) and what they are doing or being (the verb)
  • Phrases that leave out the subject ('carefully reviewed') or leave out the verb ('the report on the table') cannot stand alone as sentences
  • A fragment feels jarring because it leaves the reader waiting for missing information—either the actor or the action
  • Adding an actor ('Maria ran through the park at sunrise') resolves the missing piece and turns the fragment into a complete thought
  • In the present tense, a single actor usually takes a verb ending in -s (e.g., 'the dog barks')
  • When more than one actor performs the action, the verb drops the -s ending (e.g., 'the dogs bark')
  • Action verbs express dynamic movements or deeds (like 'drop' or actively 'tasting' a spoonful)
  • Linking verbs act like equal signs, joining the subject to a quality, condition, or identity (e.g., 'soup = salty') rather than showing something happening
  • A word like 'only' modifies the specific word that immediately follows it in English
  • Putting 'only' before 'ate' suggests eating was the sole action you performed, rather than the sole food you ate
  • Placing 'only' right before 'an apple' makes it clear that the apple was the only item eaten
  • Prepositional phrases often tell a reader when or where an action happens
  • Words like 'before' and 'during' link the action to a moment or duration in time
  • An introductory descriptive phrase automatically latches onto the first noun that follows the comma
  • If the intended subject is separated from the opening description, the description attaches to whoever or whatever sits next to it instead
  • Piling up multiple adjectives directly before a noun can slow down a reader and clutter the sentence rhythm
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives English Grammar for Clear Sentences the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

The Two Parts of Every Sentence

What two core pieces must every complete sentence have?

Get it right to open this lesson and 10 more in the app.

Course map

How to learn English Grammar for Clear Sentences, step by step

Go in order. 11 short levels across 2 sections, about 22 minutes in all, five minutes a day.

  1. 1

    The Core Engine

    • The Two Pieces Every Sentence Needs
    • Adding Detail Without Cluttering the Core
  2. 2

    Connecting and Polishing

    • Joining Thoughts Without Creating Run-Ons
    • Fixing the Most Common Sentence Glitches

2 sections · 4 units · 11 levels. Built to play, not to enroll.

Questions

Questions about English Grammar for Clear Sentences

  1. How do I learn English Grammar for Clear Sentences?

    Go in order: start with The Core Engine, then Connecting and Polishing. On Tomo that's 11 short levels, about 22 minutes in all, played five minutes a day. Start free and play the first level in under a minute.

  2. Is there a Duolingo-style app for English Grammar for Clear Sentences?

    Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. English Grammar for Clear Sentences is one of its free courses, and you can type any other topic to get a course of your own.

  3. Is the English Grammar for Clear Sentences course free?

    Yes. English Grammar for Clear Sentences is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.

  4. How long does it take to learn English Grammar for Clear Sentences?

    11 levels across 2 sections, about 22 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.

  5. Do I need any background to start English Grammar for Clear Sentences?

    No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.

New

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How it's taught

You pick the voice

This course
The Professor

English Grammar for Clear Sentences is taught in the Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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