Asking questions: intonation, est-ce que, inversion

French has three ways to ask the same question. The hard part is not the words — it is which one belongs in which situation, plus the mechanics of inversion.

Our correction data is blunt about it: 286 corrections add an inversion that was missing, and only 35 fix one that was wrong. Most learners are not getting inversion wrong; they are simply never producing it. An exam essay written entirely in est-ce que and intonation questions loses register marks.

Three ways, three registers

All three ask for exactly the same information; only the formality differs. Writing to an institution or a stranger in TCF/TEF is precisely where inversion earns register marks — in conversation, est-ce que is plenty.

est-ce que: add a block, change nothing else

Its whole advantage is that the word order stays put: keep the statement as it is and cap the front of it.

• Tu viens. → Est-ce que tu viens ?
• Il y a une piscine. → Est-ce qu'il y a une piscine ? (que → qu' before a vowel)

🔴 In our data the biggest loss here is not usage but spelling. It is one fixed block containing one apostrophe and two hyphens.

Break it into three pieces and it stops going wrong: Qu' + est-ce + que.

🔴 Inversion: swap verb and subject pronoun

The base form is verb - subject pronoun, joined by one hyphen.

• Tu es libre. → Es-tu libre ?
• Vous pouvez venir. → Pouvez-vous venir ?
• Tu veux voir ce film. → Veux-tu voir ce film ?

① Third person singular ending in a vowel → insert a -t-

• Elle améliore → améliore-t-elle ? · Il y a → Y a-t-il des conditions particulières ?
• Cela dure → combien de temps cela dure-t-il ?
• ❌ il ya t'il　❌ améliore-elle

That -t- exists only to stop two vowels colliding. It is not an elision and takes no apostrophe: write -t-il, never t'il.

② Compound tenses: the auxiliary inverts, the participle stays behind

• Vous avez vu ce film. → Avez-vous vu ce film ?　❌ Vu-vous avez

③ Pronominal verbs: the reflexive pronoun stays in front of the verb

• Vous vous levez tôt. → Vous levez-vous tôt ?

④ With a noun subject: the noun stays up front and a pronoun is added after the verb

• ✅ L'utilisation des nouvelles technologies améliore-t-elle la qualité de l'éducation ?
• ✅ Les caméras de surveillance sont-elles une sécurité ?

⚠️ je almost never inverts — only a handful of fixed forms do: puis-je · ai-je · suis-je · dois-je. Never ❌ pense-je.

The grid: person or thing × subject or object

🔴 The top-right cell is the one that goes wrong: a thing, as subject, has only one form — qu'est-ce qui. There is no short version. ❌ Qu'est-ce que vous pousse à vendre cet objet ? ✅ Qu'est-ce qui vous pousse à vendre cet objet ? The test is identical to relative pronouns: a verb follows directly (no subject) → qui.

quel: an adjective, so it agrees

quel is not the pronoun "what". It leans on a noun and takes four forms:

• Quel type de film veux-tu voir ? · Quelle heure est-il ? · Quels produits sont en promotion ?
• With être it stands apart: Quel est votre nom ? · Quelles sont vos disponibilités ?

n'importe quel = any at all — the quel cannot be dropped:

• ❌ n'importe sujet　❌ n'importe personne
• ✅ n'importe quel sujet · n'importe quelle personne

⚠️ Do not confuse it with comment. "What is it like?" is comment; quel asks "which one". ❌ Quel est le quartier ? → ✅ Comment est le quartier ?

Where the question word goes

où · quand · comment · combien · pourquoi — one row per form:

Only the intonation question lets the question word sit at the end, and only in speech. The other two always put it first.

🔴 Indirect questions: once embedded, it stops being a question

After "I'd like to know…" or "Could you tell me…", the embedded part keeps normal word order, drops est-ce que, and takes no question mark:

Three rules, that is all:

• yes/no question → si (s' before a vowel)
• asking about a thing → ce que (object missing) / ce qui (subject missing) — the same test as on relative pronouns
• où / quand / comment / pourquoi / combien → keep the word, then normal word order

⚠️ This one earns its keep in formal email: Je voudrais savoir si… is markedly more polite than a bare question, and harder to get wrong.

Classic traps ⚠️

One line to remember

Three forms, one difference: register — intonation in speech, est-ce que everywhere, inversion in letters and exams. Inversion is verb-hyphen-pronoun, with a -t- wedged in after a vowel-final third person, the auxiliary inverting in compound tenses, and a noun subject staying up front with a pronoun added after the verb. A thing as subject has only qu'est-ce qui; quel leans on its noun. And the moment a question is embedded in another sentence it becomes si / ce que / ce qui, with normal word order and no question mark.