What this is
There is no new grammar in this lesson. Every rule below was already taught somewhere in M1–M3 — gender and the three article families, plurals, the full subject-pronoun set, être, avoir, and both regular -er patterns. What changes here is the shape of the practice: instead of thirty examples that each drill one rule in isolation, every sentence in this set pulls together at least two of those rules at once, the way an actual sentence has to.
This is what a review module is for. A concept page proves you can produce du café when the lesson is about the partitive. This page checks whether you can still produce it three lessons later, in a sentence that also needs a negation, a subject pronoun, and a conjugated verb — with nothing flagging which rule is being tested.
The rule — recombination, not repetition
Nothing here is graded by concept. Read the angle labels in the examples and notice that each one names a pairing, not a single topic: gender-and-partitive-recap, etre-avoir-contrast-recap, two-clause-combination-recap. A sentence like “Elle est fatiguée ; elle a besoin d’eau.” is doing three jobs simultaneously — être for a state, avoir for a need, and the elision of de to d’ before a vowel — none of which gets its own spotlight the way it would in a first-pass lesson.
The practical effect: you can no longer guess the answer from which lesson you’re on. That guessing is a crutch the first pass through a concept can’t avoid — the page is about the partitive, so of course du/de la is the answer. Recombination removes that scaffolding on purpose.
A few threads worth tracing across the set:
| Thread | Where it shows up |
|---|---|
| Gender + article family | du fromage / le lait in the same sentence |
| Plural family | -al/-aux (journaux, hôpitaux, animaux), œil → yeux |
| être vs avoir | one clause states a condition, the next a possession or need |
| c’est vs il/elle est | chosen correctly even as the subject shifts mid-passage |
| Negation collapse | un/du/des → de after ne…pas, including the decomposed il n’y a pas de |
| Spelling-change verbs | commençons, achète, appelle reused under ordinary conjugation |
Why it works this way
Vocabulary and grammar rules decay fast on a single exposure. The vocabulary ledger behind this course tracks exactly that: every word introduced in M1–M3 has an exposure count, and a large share of the 212 words taught so far were used only once or twice in their original concept. A rule you have seen demonstrated once is not a rule you have internalized — it is a rule you recognize when reminded. This module is the reminder, engineered rather than left to chance.
It is also the first real test of whether the vocabulary gating actually worked. If a sentence here reads naturally, it means the words really were taught with enough context to be reusable — not just correct in the one example that introduced them.
Edge cases
Zero new vocabulary, zero new grammar
Every word in this set is drawn from the M1–M3 ledger. Nothing is introduced, which is why vocab.json for this concept is empty. If a sentence needed a word outside that set, the fix was to rewrite the sentence, not add the word — a review module that quietly teaches new material stops being a review.
A sentence must combine, not just recombine nouns
Swapping the noun in an already-seen sentence frame is not what this module is for — that produces the same “sixteen examples starting with the same three words” failure the very first content generation for this course ran into. Every sentence here was written to cross at least two Block A concepts: an article rule paired with a verb rule, or a pronoun paired with a negation, so that getting it right requires holding two rules in mind at once.
Under-drilled words get priority
Words seen only once or twice in M1–M3 (café, courage, patience, journal, hôpital, œil) are deliberately overrepresented here relative to their original frequency, because a single exposure is the weakest kind of exposure. Words that were already reinforced heavily in their home concept (je, il, être, avoir) appear less often here — they don’t need the help.
What English speakers get wrong here
The mistakes that show up in recombination are different from the mistakes that show up in a single-topic lesson. In isolation, most learners get du café right in a partitive lesson and pas de chat right in a negation lesson. Combined, the common failure is applying the wrong rule to the wrong clause — carrying du through a negated clause (il n’y a pas du café) or dropping the partitive entirely once a negation appears anywhere nearby in the sentence, even in a different clause. The fix is the same one from M1: check each verb phrase on its own terms, independent of what the neighboring clause is doing.
The second common mistake is choosing c’est or il/elle est by pattern-matching the previous sentence rather than by checking what actually follows the verb. When the subject of a passage shifts — from a general statement into a specific judgment about one item — the c’est/il est choice has to be re-evaluated every time, not carried over from the sentence before it.