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English Grammar Through Latin: Learn Why English Works the Way It Does

High school29 topicsAssumes Student can read and write fluent English and knows basic school grammar terms (noun, verb, sentence) but has no prior Latin or formal grammar training.

This course teaches English grammar by building up a working knowledge of Latin alongside it. You start with the parts of speech and basic sentence structure, learn the Latin case system, declensions, and conjugations, and at each step turn back to ask what the English equivalent is and why English often works differently. By the end you can explain things like why 'whom' exists, why passive voice is built with 'be' plus a participle, why adjectives in English don't change form, and where rules like 'don't split an infinitive' came from.

Lessons are conversations, not lectures. The tutor gives you a short piece of grammar - a Latin paradigm, an English sentence, a rule - and asks you to do something with it: decline a noun, identify a case, find the subjunctive in a sentence, explain why a construction is phrased the way it is. You answer, sometimes only partly right, and the tutor works from what you actually said, asking a follow-up question rather than re-explaining from scratch. Ideas come back later in new contexts to check they actually stuck, not just that you repeated them once.

Who it is for

  • High school students who want to understand English grammar more deeply than school usually covers it
  • Students curious about Latin or planning to study it, who want a running start on its core grammar
  • Homeschool and classical-education students following a grammar-and-logic-stage curriculum
  • Parents or teachers looking for a grammar course that explains rules instead of just stating them
  • Anyone who wants to know why English works the way it does, not just how to follow its rules

What you will be able to do

  • Identify the eight parts of speech and the functional slots in a sentence (subject, object, complement)
  • Read and pronounce basic Latin words and decline first and second declension nouns and adjectives in all six cases
  • Conjugate Latin verbs in the present, future, imperfect, perfect, pluperfect, and future perfect tenses, active and passive
  • Explain English case, tense, aspect, voice, and mood by naming the Latin category each one descends from
  • Recognize gerunds, participles, and infinitives in English and explain their Latin origins and typical errors (dangling participles, misused infinitives)
  • Explain the Latin origin of traditional English grammar rules and judge when those rules do and don't apply

A taste of a lesson on English's Hidden Case System

The tutor asks, you answer, and it works from what you actually said. No videos to sit through.

TutorTake the sentence 'He gave her the book.' In Latin terms, what case would 'her' be in, and why?
StudentDative, because she's the one receiving the book?
TutorExactly right, the indirect object takes dative. Now look at 'he' - what case is that, and what tells you?
StudentNominative, since it's the subject. But how do I know that from the word itself, not just the position?
TutorGood question - try swapping it for the object form and see what happens: say 'Him gave her the book.' Does that sound right?
StudentNo, that sounds wrong. So 'he' must be a special subject-only form, like nominative.
TutorRight - English pronouns still mark case even though nouns don't. So what form would 'he' take if it became the direct object instead, as in 'She saw ___'?

The 29 topics in English Grammar Through Latin

Each topic builds on the ones before it. The tutor checks what you already know and starts there.

  1. Parts of Speech Overview

    Introduce the eight traditional parts of speech (noun, pronoun, verb, adjective, adverb, preposition, conjunction, interjection) as inherited from Latin grammatical tradition. Students learn to identify each part of speech in English sentences and understand that this classification system itself comes from Latin grammarians describing Latin.

  2. Basic Sentence Structure: Subject, Verb, Object

    Teach subject, verb, direct object, indirect object, and complement as functional slots in a sentence. Show how English relies on word order to signal these roles, setting up the contrast with Latin's word-ending (inflectional) system taught later.

    Builds on Parts of Speech Overview

  3. Latin Alphabet and Pronunciation Basics

    Introduce the Latin alphabet, classical pronunciation of vowels and consonants, and basic reading of Latin words aloud. Establishes ability to read simple Latin forms used throughout the course.

  4. The Concept of Inflection

    Explain what inflection is: changing the form of a word (usually its ending) to show its grammatical role, as opposed to English's reliance on word order and helper words. Contrast English's few remaining inflections (he/him, dog/dogs) with Latin's rich inflectional system, previewing why Latin is a useful lens for English grammar.

    Builds on Basic Sentence Structure: Subject, Verb, Object, Latin Alphabet and Pronunciation Basics

  5. Clauses, Conjunctions, and Subordination

    Teach independent and dependent (subordinate) clauses, coordinating and subordinating conjunctions, and an introduction to relative clauses using English relative pronouns (who, which, that). Establish the idea of subordination as foundational sentence structure, to be revisited later once Latin cases are known.

    Builds on Basic Sentence Structure: Subject, Verb, Object

  6. Latin Core Cases: Nominative, Genitive, Dative, Accusative

    Teach the four most common Latin cases and the grammatical function each expresses: nominative (subject), genitive (possession), dative (indirect object), and accusative (direct object). Use simple Latin examples (e.g., puella, puellae, puellae, puellam) to show endings changing with function.

    Builds on The Concept of Inflection

  7. Latin Ablative and Vocative Cases

    Building on the four core cases, teach the ablative case (expressing means, manner, place, agent, and other adverbial relations) and the vocative case (direct address). Practice recognizing all six cases together on familiar noun forms.

    Builds on Latin Core Cases: Nominative, Genitive, Dative, Accusative

  8. First Declension Nouns

    Teach the paradigm endings for first declension nouns (e.g., puella, puellae...) across all six cases in singular and plural. Practice declining first declension nouns correctly as a focused drill before adding a second paradigm.

    Builds on Latin Ablative and Vocative Cases

  9. Second Declension Nouns

    Teach the paradigm endings for second declension nouns (e.g., servus, puer) across all six cases in singular and plural, contrasting them with first declension endings already learned. Practice declining and distinguishing first vs second declension nouns.

    Builds on First Declension Nouns

  10. English's Hidden Case System

    Show that English pronouns (I/me/my, he/him/his, who/whom) still show nominative, accusative/dative (objective), and genitive (possessive) case distinctions, and that these correspond directly to Latin cases. Use this to explain common English usage questions like 'who vs whom' and 'between you and me'.

    Builds on Latin Core Cases: Nominative, Genitive, Dative, Accusative

  11. Latin Adjectives and Agreement

    Teach that Latin adjectives must agree with the nouns they modify in case, number, and gender, using first/second declension adjective endings (e.g., bonus, bona, bonum). Explain grammatical gender as a formal category distinct from biological sex.

    Builds on Second Declension Nouns

  12. Adjectives in English: Order and (Lost) Agreement

    Contrast English adjectives, which do not inflect for agreement, with Latin's agreement system, and explain why English instead relies on strict adjective ordering and word position. Discuss remnants like 'this/these' agreeing in number.

    Builds on Latin Adjectives and Agreement

  13. Prepositions and the Cases They Govern

    Teach how Latin prepositions govern specific cases (accusative or ablative) to express relations English expresses only with prepositions, since English lost most case endings. Show how English prepositions took over many jobs Latin cases used to do.

    Builds on Latin Ablative and Vocative Cases, English's Hidden Case System

  14. Latin Verb Conjugation Classes and Principal Parts

    Introduce the four Latin conjugation classes and the concept of principal parts (e.g., amo, amare, amavi, amatus) as the building blocks for all verb forms. Focus on recognizing conjugation class from principal parts.

    Builds on The Concept of Inflection

  15. Latin Subject-Verb Agreement in Person and Number

    Teach how Latin verb endings encode person and number, allowing subjects to be dropped, and practice conjugating present-tense forms of a verb across persons and numbers. Compare to English's minimal subject-verb agreement (e.g., only 's' in third person singular).

    Builds on Latin Verb Conjugation Classes and Principal Parts

  16. Present, Future, and Imperfect Tenses

    Teach formation and meaning of the Latin present, future, and imperfect tenses, focusing on how imperfect expresses ongoing/repeated past action distinct from simple past. Compare to English progressive ('was walking') vs simple past ('walked').

    Builds on Latin Subject-Verb Agreement in Person and Number

  17. Perfect, Pluperfect, and Future Perfect Tenses

    Teach the Latin perfect system tenses, which express completed action, and how they differ conceptually from the imperfect/present system. Draw the parallel to English perfect tenses formed with 'have/had/will have'.

    Builds on Present, Future, and Imperfect Tenses

  18. English Tense and Aspect Explained via Latin

    Use the Latin distinction between tense (time) and aspect (completed vs ongoing) to explain English's compound tense system (simple, progressive, perfect, perfect progressive) clearly, since English grammar books often conflate these.

    Builds on Perfect, Pluperfect, and Future Perfect Tenses

  19. Active and Passive Voice in Latin

    Teach how Latin forms the passive voice through verb endings rather than helper words, and the concept of the ablative of agent. Reinforce the general concept of voice as who performs vs receives the action.

    Builds on Latin Subject-Verb Agreement in Person and Number

  20. English Passive Voice and Its Style Implications

    Show how English builds passive voice with 'be' plus past participle rather than inflection, connect this to the Latin passive, and discuss when passive voice is useful versus when it obscures agency (a common style issue in writing).

    Builds on Active and Passive Voice in Latin

  21. Latin Moods: Indicative, Subjunctive, Imperative

    Teach mood as a category expressing the speaker's attitude toward the action (fact, possibility/wish, command), covering Latin indicative, subjunctive, and imperative forms and typical subjunctive uses (purpose, wish, conditional), building on subordinate clause structures already introduced.

    Builds on Clauses, Conjunctions, and Subordination, Perfect, Pluperfect, and Future Perfect Tenses

  22. The English Subjunctive and Mood

    Show the surviving English subjunctive ('if I were,' 'I suggest that he go') and imperative forms, explaining them through the Latin mood framework, and clarify commonly confused usages like 'was' vs 'were' in conditionals.

    Builds on Latin Moods: Indicative, Subjunctive, Imperative

  23. Latin Participles and Infinitives

    Teach Latin present and perfect participles and the infinitive as verb forms that act like adjectives or nouns, including their agreement patterns and typical uses (e.g., ablative absolute constructions previewed conceptually).

    Builds on Latin Adjectives and Agreement, Latin Verb Conjugation Classes and Principal Parts

  24. English Verbals: Gerunds, Participles, and Infinitives

    Teach English gerunds, participles, and infinitives as verb forms functioning as nouns/adjectives, directly paralleling Latin participles and infinitives, and clarify common errors like dangling participles and split infinitives (and why the 'rule' against split infinitives came from Latin). Uses understanding of clauses to analyze phrases like 'the man running down the street'.

    Builds on Clauses, Conjunctions, and Subordination, Adjectives in English: Order and (Lost) Agreement, Latin Participles and Infinitives

  25. Latin Word Order and Syntax Flexibility

    Explain how Latin's case system allows flexible word order (subject/object/verb can move) because grammatical role is marked by endings, not position, and how this affects emphasis and style in Latin sentences.

    Builds on Second Declension Nouns, Present, Future, and Imperfect Tenses

  26. Why English Depends on Word Order

    Consolidate the course's central contrast: English lost most inflections and became a word-order-dependent (configurational) language, explaining phenomena like strict SVO order, the rise of auxiliary verbs and prepositions, and why English sentence structure feels rigid compared to Latin's.

    Builds on Prepositions and the Cases They Govern, English Passive Voice and Its Style Implications, Latin Word Order and Syntax Flexibility

  27. Latin Relative Pronouns and Clause Agreement

    Revisit clauses now that Latin cases are known: teach how Latin relative pronouns decline and agree with their antecedents in gender and number while taking case from their role in the relative clause, and compare this to English's simpler relative pronoun system (who, whom, whose, which, that).

    Builds on Clauses, Conjunctions, and Subordination, Latin Ablative and Vocative Cases

  28. Latin Roots and English Vocabulary

    Teach how a large portion of English vocabulary (especially formal, scientific, and Latinate register words) derives from Latin roots, prefixes, and suffixes, and how recognizing Latin morphemes (e.g., -tion, -able, trans-, -duc-) helps decode unfamiliar English words and understand register differences between Latinate and Anglo-Saxon vocabulary.

    Builds on Second Declension Nouns, Latin Verb Conjugation Classes and Principal Parts

  29. Synthesis: Grammatical Terminology and Traditional English Grammar Rules

    Review how traditional English grammar terminology and prescriptive rules (e.g., 'don't split infinitives,' 'don't end a sentence with a preposition') originated from applying Latin grammatical categories to English, evaluate which rules make sense for English and which are historical artifacts, and consolidate the whole course's comparative framework.

    Builds on The English Subjunctive and Mood, English Verbals: Gerunds, Participles, and Infinitives, Why English Depends on Word Order, Latin Relative Pronouns and Clause Agreement, Latin Roots and English Vocabulary

Practice questions in English Grammar Through Latin

A few of the kinds of questions you will work through, with answers.

Parts of Speech Overview

In the sentence 'She quickly closed the heavy door,' what part of speech is 'quickly'?

See the answer

Adverb

It modifies the verb 'closed', telling how the action was done, which is the defining job of an adverb.

First Declension Nouns

What is the genitive singular form of 'puella' (girl), and what does it mean in English?

See the answer

Puellae, meaning 'of the girl' or 'the girl's'

First declension genitive singular ends in -ae, marking possession, the same role English shows with 's or 'of'.

Present, Future, and Imperfect Tenses

What is the difference in meaning between the Latin imperfect 'amabat' and the perfect 'amavit', both often translated 'he loved'?

See the answer

Imperfect shows ongoing or repeated past action ('he was loving/used to love'); perfect shows a completed, single past action ('he loved/has loved')

Latin separates tense from aspect through distinct verb systems, a distinction English makes with phrasing rather than endings.

English Passive Voice and Its Style Implications

Rewrite 'The committee rejected the proposal' in the passive voice, and explain one situation where this passive version would be preferable.

See the answer

'The proposal was rejected by the committee' (or 'The proposal was rejected,' dropping the agent); preferable when the agent is unknown, unimportant, or deliberately being downplayed

English passive is formed with 'be' plus a past participle, and it shifts focus from the doer to the one acted upon.

The English Subjunctive and Mood

Which is correct in formal English: 'I wish I was taller' or 'I wish I were taller', and why?

See the answer

'I wish I were taller'

This expresses a wish contrary to fact, which calls for the subjunctive mood, surviving in English as 'were' regardless of subject.

Latin Participles and Infinitives

In 'Having finished the race, she sat down,' what kind of English verbal is 'Having finished', and what Latin verb form does it correspond to?

See the answer

A perfect participle; it corresponds to the Latin perfect active participle

It functions as an adjective describing 'she' while showing an action completed before the main verb, matching the Latin participle's dual verb-adjective role.

Questions about this subject

Do I need to already know Latin to start this course?

No. The course assumes fluent English and basic school grammar terms like noun and verb, but no prior Latin at all; the Latin alphabet and pronunciation are taught in the third topic.

Will this make me able to read Latin literature?

No. The course goes through declensions, conjugations, cases, and moods in enough depth to use Latin as a tool for understanding English, but it stops short of full reading fluency or Latin composition.

Is this the same as a standard English grammar class?

No. A standard class usually teaches rules to follow; this course builds a working Latin grammar alongside English so you can see where those rules came from and when they do or don't make sense to apply.

How does the tutor handle wrong or incomplete answers?

The tutor asks about one idea at a time and works from whatever you actually say, including partial or wrong answers, asking a follow-up question that pushes you toward the correct distinction rather than just supplying it.

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