Trivium Home School · The first art

The Art of Grammar

A year of grammar in the Great Library of Alexandria, from the verb “to be” to the art of the speech. Every chapter comes twice: as a full lesson with exercises that go up to C2, and as a comic strip with Sophia, Philo, Marcos and Demetria. Each shows its grammar point and level.

Grammar is the first of the three arts of the trivium. The Art of Logic picks up where it leaves off, and The Art of Rhetoric follows. What is the trivium?

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Begin here

Three short comics: the characters, what a word is, and what words do.

Where grammar meets logic

What a word means and what it names: the same ground seen from logic, in The Art of Logic.

The Three Arts: What Logic Is For

Grammar, logic and rhetoric: three arts of one language, and what logic is for.

Logic · Part 1B2Free

Words and Terms: One Word, Several Meanings

Words and terms: one word, several meanings, and the art of noticing the difference.

Logic · Part 2B2Premium

The Categories: Ten Questions About Anything

Aristotle’s ten categories, and the ten questions you can ask about anything.

Logic · Part 3B2Premium
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The free chapters

The verb “to be” and the first six lessons of the year, each with its comic strip.

The One Who Is

The verb to be; there is / there are; be to, the subjunctive be, being

In which Philo asks a question older than any grammar lesson, Sophia takes the verb “to be” apart at the foot of the burning bush, and Aristotle finds the one answer he cannot sort.

PrequelA1–C2Free

The Instant and the Standing Rule

Present simple and present continuous; stative verbs; the historic present

In which Marcos is caught drifting off mid-argument, and Sophia turns the catching of him into a lesson about two different kinds of “now.”

Lesson 1A1–C2Free

An Incident with a Shelf

Past simple, past continuous, used to and would; the unreal and polite past

In which a basket falls, a shelf takes the blame, and Sophia proves that the past has more than one way of happening.

Lesson 2A2–C2Free

Two Points Joined

The perfect aspect: present and past perfect, simple and continuous

In which a swept aisle is not as swept as claimed, and Sophia shows that a verb can tie two moments together with a single rope — and that the rope itself can show a result, or the pulling.

Lesson 3B1–C2Free

A Wager

Future forms: will, going to, present tenses, future continuous, perfect and perfect continuous; be bound / likely to; be about to, on the verge of; shall, set to

In which Marcos bets against the harbour, loses before he knows it, and Sophia counts out six different ways of meaning “later.”

Lesson 4B1–C2Free

A Verb That Doesn’t Verb

Linking verbs: be, seem, look, become…; go, turn, grow, fall

In which Philo looks tired without doing anything at all, and Sophia shows that some verbs only join — they never act.

Lesson 5A2–C2Free

How Sure, How Allowed, How Obliged

Modal verbs: deduction, permission, ability, obligation and advice; modal perfects

In which an ink jar shatters, Marcos stands accused, and the library discovers that a handful of small verbs are doing four entirely different jobs at once.

Lesson 6B1–C2Free
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The parts of speech

Lessons 7–13: nouns, pronouns, adjectives, adverbs, conjunctions, prepositions and phrasal verbs.

A Name for Everything

Nouns: common and proper, countable and uncountable, plurals; nominalisation

In which a shipment of spice turns out to be a whole grammar lesson, and Sophia sorts nouns by what they actually are.

Lesson 7A2–C2Premium

In Her Place

Pronouns: personal, possessive, reflexive, relative, indefinite; singular they

In which the library gets tired of saying “Cassia” and Sophia introduces the word that stands in for a name once everyone already knows it.

Lesson 8A2–C2Premium

A Beautiful Small Old Round Black Box

Adjectives: position, order, comparison, -ed / -ing

In which an uncatalogued box turns out to be the perfect specimen for every rule an adjective obeys.

Lesson 9A2–C2Premium

Carefully, Rarely, Almost Never

Adverbs: manner, position, frequency, degree, good / well; focusing and comment adverbs

In which the old box turns out to hide a mechanism, and Sophia lets it wind up a lesson on everything an adverb can touch.

Lesson 10A2–C2Premium

Joining the Pieces

Conjunctions: coordinating, subordinating, correlative, conjunctive adverbs

In which a torn letter turns out to be missing nothing but its joints, and Sophia shows what holds a sentence together when the pieces themselves are already sound.

Lesson 11B1–C2Premium

The Space Between Things

Prepositions of place, movement and time; dependent prepositions

In which the torn letter turns out to be a map, and every small word in it turns out to be load-bearing.

Lesson 12A2–C2Premium

Up, Off, and Away

Phrasal verbs: separable and inseparable, three-part verbs

In which soot proves an unexpectedly good teacher, and one small word after a verb turns out to change everything about it.

Lesson 13B1–C2Premium

Sentences and clauses

Lessons 14–25: conditionals, reported speech, the passive, inversion, relative and noun clauses.

If We Open It

Conditionals: zero, first, second, third and mixed; beyond will and would

In which a locked chest turns four friends into hypothesists, and every shade of “maybe” finally gets a grammar of its own.

Lesson 14B1–C2Premium

Once Removed

Reported speech: say / tell, reporting verbs, tense and time shifts, questions; it is said that

In which a two-thousand-year-old diary teaches everyone that repeating someone’s words is never quite the same as keeping them.

Lesson 15B1–C2Premium

To Go, or Going

Gerunds and infinitives

In which a diary’s fate hangs on a decision that turns out to be, grammatically, a choice between two disguises for the same verb.

Lesson 16B1–C2Premium

Dangling by a Participle

Participle clauses; dangling participles

In which Marcos crosses a scaffold plank over a stairwell, and learns that a misplaced participle can be just as unsteady as the plank itself.

Lesson 17B2–C2Premium

A Question of Order

Questions: yes / no, wh-, tag, embedded and negative questions

In which the scholar demands answers, and the group discovers that even being interrogated is, quietly, a grammar lesson.

Lesson 18A2–C2Premium

Never Had She Expected

Inversion: never, only, so / such, locative

In which the evening’s verdict finally arrives, and Sophia reaches for a sentence dramatic enough to match it.

Lesson 19C1–C2Premium

Nobody Broke It

The passive: all tenses, with modals, the get-passive; have something done

In which the official record gets written, and Marcos discovers that grammar can be a remarkably convenient place to hide.

Lesson 20B1–C2Premium

A Box, The Box, No Box At All

Articles and determiners: a / the / zero article, possessives, demonstratives

In which a catalog entry finally gets written, and the smallest words in the sentence turn out to have been running the whole show.

Lesson 21A2–C2Premium

None of Them Agree

Subject–verb agreement

In which proofreading the library’s own report turns up a small army of subjects and verbs that refuse to see eye to eye.

Lesson 22B1–C2Premium

One Idea, or Several

Sentence types: simple, compound, complex; fragments; clefts and rhythm

In which a choppy paragraph about a box gets rebuilt, one clause at a time, into something worth reading aloud.

Lesson 23B1–C2Premium

Which Is Essential, and Which Isn’t

Relative clauses: defining and non-defining, that / which

In which a shipping clerk, faced with writing “Cassia” fourteen times, discovers what a relative clause can do for a tired hand.

Lesson 24B1–C2Premium

What Happened Is the Subject

Noun clauses: as subject, object and complement; whether; the subjunctive

In which Philo names the one clause Sophia’s whole discipline had somehow left unnamed, and a set of three finally comes together.

Lesson 25B2–C2Premium

Writing and speaking

Lessons 26–34: from the paragraph to the essay, the letter and the speech.

One Idea, Properly Escorted

Paragraph structure: topic sentences, unity, coherence

In which correct sentences finally learn to speak to each other, and the scholar hands out a whole year’s worth of reasons to keep practicing.

Lesson 26B1–B2Premium

What Happened, In the Order It Happened

Narrative writing: structure, narrative tenses, showing not telling

In which the first of eight assignments turns out to need far more than a list of true events in order.

Lesson 27B1–C1Premium

A Reason to Keep Reading

Article writing: the hook, addressing the reader, headings

In which Philo learns that being factually correct and being worth reading are, disappointingly, two separate skills.

Lesson 28B2–C1Premium

Worth Finding

Review writing: description, verdict, evaluative language

In which Marcos discovers that cataloguing a diary and judging one turn out to be entirely different skills.

Lesson 29B2–C1Premium

For the Record, In Full

Report writing: purpose, headings, formal register, recommendations

In which the clerk finally gets a form of writing built for exactly his temperament — and learns it demands more discipline than he expected.

Lesson 30B2–C1Premium

Two Sides, Weighed on Purpose

Essay writing: thesis, argument, counterargument, conclusion

In which Philo takes on the clerk’s own recommendation, and learns that disagreeing well is its own careful discipline.

Lesson 31B2–C1Premium

A Plan, Not Yet a Fact

Proposal writing: aims, suggestions, persuasive modals

In which Demetria settles what Philo’s essay only argued about, and discovers a proposal doesn’t have to choose a side so much as design a compromise worth approving.

Lesson 32B2–C1Premium

The Same News, Twice Over

Letter writing: formal and informal register

In which Marcos writes the same true story twice, and learns that a reader shapes a letter every bit as much as the news itself does.

Lesson 33B1–C1Premium

Said Aloud, and Meant

Oratory: the rule of three, repetition, rhetorical questions

In which Marcos stands before the Council with nothing to cross out and no second draft coming, and a year of lessons finally has to fit inside one spoken sentence.

Lesson 34C1–C2Premium