French Question Formation: Est-ce que, Inversion and Interrogative Words
Getting Started — Three Ways to Form a Question
By now you’ve learned -ER, -IR, -RE verbs, and Aller, Faire, Venir — now it’s time to ask questions. French has three ways to form a question, each suited to a different situation:
- Intonation — the simplest, most common in speech
- Est-ce que — a middle ground, used everywhere
- Inversion — more formal, common in writing
Connection: In Everyday Greetings and Phrases, you already used questions like “Comment tu t’appelles?” — this lesson explains how these structures actually work.
Method 1: Intonation (Raising Your Voice)
The simplest — the sentence structure doesn’t change at all; just raise your voice and add ‘?’:
| Statement | Question |
|---|---|
| Tu parles français. | Tu parles français? |
| Vous habitez ici. | Vous habitez ici? |
| Il travaille demain. | Il travaille demain? |
Use: Most common in speech. Use this with friends and family.
Method 2: Est-ce que
Add ‘Est-ce que’ at the start of the sentence, keeping the rest unchanged:
| Statement | Question with Est-ce que |
|---|---|
| Tu parles français. | Est-ce que tu parles français? |
| Vous habitez ici. | Est-ce que vous habitez ici? |
| Elle travaille demain. | Est-ce qu’elle travaille demain? |
Note: Before a vowel (a, e, i, o, u), ‘que’ becomes ‘qu’’ (elision) — “Est-ce qu’elle…” not “Est-ce que elle…”.
Use: Safe in every situation — works in both speech and writing.
Method 3: Inversion (Formal)
Swap the subject pronoun and the verb, joined by a hyphen (-):
| Statement | Question with Inversion |
|---|---|
| Tu parles français. | Parles-tu français? |
| Vous habitez ici. | Habitez-vous ici? |
| Il travaille demain. | Travaille-t-il demain? |
Note! Adding a ‘t’: When the verb ends in a vowel and the subject is ‘il/elle/on’, a ‘-t-’ is inserted between them so two vowels don’t collide in speech: “Travaille-t-il?” not “Travaille-il?”.
Use: Common in writing, formal speech, and TEF/TCF Expression Écrite. Used less often in casual conversation.
Interrogative Words — Asking for Specific Information
| French | English | Example |
|---|---|---|
| qui | who | Qui est-ce? (Who is it?) |
| que / qu’est-ce que | what | Qu’est-ce que tu fais? (What are you doing?) |
| où | where | Où habites-tu? (Where do you live?) |
| quand | when | Quand pars-tu? (When are you leaving?) |
| comment | how | Comment ça va? (How are you?) |
| pourquoi | why | Pourquoi tu pleures? (Why are you crying?) |
| combien | how much / how many | Combien ça coûte? (How much does it cost?) |
| quel/quelle | which/what | Quelle heure est-il? (What time is it?) |
Structure: Interrogative word + est-ce que + normal word order, or interrogative word + inversion:
- “Où est-ce que tu habites?” = “Où habites-tu?” (both correct, the second is more formal)
- “Quand est-ce que tu pars?” = “Quand pars-tu?”
Qu’est-ce que vs. Qui est-ce que
| For things | For people, as object |
|---|---|
| Qu’est-ce que tu manges? (What are you eating?) | Qui est-ce que tu vois? (Who do you see?) |
| Qu’est-ce que c’est? (What is it/this?) | Qui est-ce que tu attends? (Who are you waiting for?) |
Real Examples
1. Everyday Questions
- “Tu viens à quelle heure?” → What time are you coming?
- “Est-ce que tu as faim?” → Are you hungry?
- “Comment tu t’appelles?” → What’s your name?
2. While Travelling
- “Où est la gare, s’il vous plaît?” → Where is the train station, please?
- “Combien coûte ce billet?” → How much does this ticket cost?
- “Le train part à quelle heure?” → What time does the train leave?
3. In Formal Situations / Interviews
- “Pourquoi voulez-vous apprendre le français?” → Why do you want to learn French?
- “Depuis quand habitez-vous au Canada?” → Since when have you lived in Canada?
Practice — For Mastery
Exercise: Form a Question
Turn each statement into a question using ‘est-ce que’:
- “Tu habites à Toronto.” → Est-ce que tu habites à Toronto?
- “Elle travaille aujourd’hui.” → Est-ce qu’elle travaille aujourd’hui?
- “Vous parlez anglais.” → Est-ce que vous parlez anglais?
Exercise: Choose the Right Interrogative Word
- “_____ habites-tu?” (where) → Où habites-tu?
- “_____ ça coûte?” (how much) → Combien ça coûte?
- “_____ tu ne manges pas?” (why) → Pourquoi tu ne manges pas?
Common Mistakes and Fixes
| ❌ Wrong | ✓ Right | Explanation |
|---|---|---|
| Est-ce que elle habite ici? | Est-ce qu’elle habite ici? | Before a vowel, ‘que’ becomes ‘qu’’ (elision) |
| Travaille-il demain? | Travaille-t-il demain? | A ‘-t-’ is required between a vowel ending and il/elle/on |
| Qui tu vois? | Qui est-ce que tu vois? | Outside casual speech, ‘qui’ alone isn’t enough — add ‘est-ce que’ |
| Que manges-tu? (in speech) | Qu’est-ce que tu manges? | ‘qu’est-ce que’ sounds more natural in spoken French |
Moving Forward
Today’s takeaway: You now know all three methods and the main interrogative words — useful in interviews and everyday conversation alike. Next, we’ll learn:
- Imperative (commands: Viens! Attendez!)
- Object pronouns (le, la, les, lui, leur) — for shortening long answers
Your challenge: Every day, build 5 questions about yourself using ‘où’, ‘quand’, ‘pourquoi’. Practise both intonation and est-ce que for speech.
FAQ
What's the simplest way to form a question?
Intonation (raising your pitch) — just raise your voice at the end of the sentence: 'Tu parles français?' No change to word order is needed, just add a '?'. It's the most common form in spoken French, but 'est-ce que' is used more in writing or formal situations.
When should I use inversion?
Inversion (Parlez-vous français?) is more formal/written. In spoken French, use 'est-ce que' or intonation instead. It's useful to know inversion for TEF/TCF Expression Écrite, but there's no pressure to use it when speaking.
What's the difference between 'Qu'est-ce que' and 'Qui est-ce que'?
'Qu'est-ce que' = what (for things): 'Qu'est-ce que tu manges?' (What are you eating?). 'Qui est-ce que' = who (for people, as an object): 'Qui est-ce que tu vois?' (Who do you see?). Both use the same 'est-ce que' pattern — only the interrogative word changes.
Does every question need an interrogative word?
No. Yes/no questions need no interrogative word at all: 'Tu viens?' (Are you coming?). An interrogative word is only needed when you want specific information (who, what, where, when...).