Forming Questions - French Grammar

Forming Questions in French

As a learner, you will meet three common ways to make basic questions (especially yes/no questions) in French: rising intonation, est-ce que, and subject–verb inversion. Each one is useful in different situations. This article explains what each method means, when to use it, how to form it, and common mistakes to avoid. Examples are given in French with English translations.

When do I use each form?

Intonation (raise your voice at the end): the most informal choice, used in everyday spoken French.
Est-ce que: neutral and very safe for learners; common in both spoken and written French.
Subject–verb inversion: more formal or written; compact and often used in journalism, literature, or polite/formal speech.

Intonation: simply raise your voice

How do I form a question by intonation?

Take a normal declarative sentence and keep the same word order. In speech, raise your pitch at the end of the sentence. In writing you add a question mark. This is the quickest and most natural way to ask yes/no questions in conversation.

Examples:
Tu viens ce soir. -> Tu viens ce soir ?
(You are coming tonight. -> Are you coming tonight?)

Il est là. -> Il est là ?
(He is there. -> Is he there?)

Marc part demain. -> Marc part demain ?
(Marc leaves tomorrow. -> Is Marc leaving tomorrow?)

Tu n'as pas faim. -> Tu n'as pas faim ?
(You are not hungry. -> Aren't you hungry?)

T'as fini ?
(Colloquial: You have finished? -> Have you finished?)

On y va ?
(Shall we go?)

When not to use intonation
- Avoid intonation for long or complex sentences: the meaning can be unclear.
- It sounds informal; use est-ce que or inversion in formal contexts or in writing.

Using "Est-ce que" — neutral and learner-friendly

How do I use est-ce que?

Put Est-ce que at the start of a statement. It turns a statement into a yes/no question without changing word order. If the following word begins with a vowel, contract to Est-ce qu'.

Examples:
Est-ce que tu veux du café ?
(Do you want coffee?)

Est-ce qu'il vient demain ?
(Is he coming tomorrow?)

Est-ce que Marie a compris la leçon ?
(Did Marie understand the lesson?)

Est-ce que tu ne comprends pas ?
(Don't you understand?)

Pourquoi est-ce que tu ris ?
(Why are you laughing?)

Qu'est-ce que tu fais ?
(What are you doing?) — note: qu'est-ce que is the common neutral form for "what" as object.

Est-ce qu'il y a des questions ?
(Are there any questions?)

Common mistakes with est-ce que
- Wrong: *Est-ce que viens-tu ?* (don’t mix est-ce que and inversion)
- Wrong: *Est-ce que il vient ?* → Correct: Est-ce qu'il vient ? (contract before a vowel)

Subject–verb inversion — formal and compact

How do I form subject–verb inversion?

Invert the verb and the subject pronoun and join them with a hyphen. This form is common in written French and formal questions.

Rules and tips:
- For most pronouns: verb‑pronoun with a hyphen: Tu viens. → Viens‑tu ?
- For il/elle/on when the verb ends in a vowel sound, insert -t- for pronunciation: Il aime. → Aime‑t‑il ?
- If the subject is a noun (a name or noun phrase), repeat the appropriate pronoun after the verb: Marie vient. → Marie vient‑elle ? (More formal than "Marie vient ?")
- For compound tenses invert the auxiliary verb: Elle a fini. → A‑t‑elle fini ?
- Inversion with "je" is rare and exists only in specific or very formal phrases (e.g., Puis‑je ? / Suis‑je ?). Most often use est‑ce que or intonation with je.

Examples:
Tu as un stylo. → As‑tu un stylo ?
(Do you have a pen?)

Elle parle anglais. → Parle‑t‑elle anglais ?
(Does she speak English?)

Ils partent demain. → Partent‑ils demain ?
(Are they leaving tomorrow?)

Marie est arrivée. → Marie est‑elle arrivée ?
(Has Marie arrived?)

Elle a fini ses devoirs. → A‑t‑elle fini ses devoirs ?
(Has she finished her homework?)

Puis‑je entrer ?
(May I come in?) — example of an inversion with je used in a polite formula.

Special notes on pronunciation and hyphens
- Always use a hyphen between verb and pronoun in inversion: Parle‑tu ? is wrong — correct: Parle‑tu → Parles‑tu ? (and with s if required: Parles‑tu ?)
- Insert -t- only for third person singular when necessary: aime‑t‑il, va‑t‑elle, est‑il.
- With noun subjects, repeat the pronoun after the inverted verb: Le professeur est‑il là ? (Is the teacher there?)

Questions with question words (who/what/where/why/how)

How do I form information (wh-) questions?

You can combine question words (qui, que/quoi, où, quand, pourquoi, comment, combien, lequel) with any of the three question patterns above. The three common patterns are: 1) Question word + est‑ce que + subject + verb (neutral) 2) Question word + inversion (formal) 3) Statement or subject + verb, with question word at the end + rising intonation (informal)

Examples:
Who (as subject):
Qui vient ?
(Who is coming?)

Who (as object):
Qui vois‑tu ? / Qui est‑ce que tu vois ? / Tu vois qui ?
(Who do you see?)

What:
Que fais‑tu ? (formal) / Qu'est‑ce que tu fais ? (neutral) / Tu fais quoi ? (informal)
(What are you doing?)

Where:
Où vas‑tu ? / Où est‑ce que tu vas ? / Tu vas où ?
(Where are you going?)

When:
Quand viens‑tu ? / Quand est‑ce que tu viens ? / Tu viens quand ?
(When are you coming?)

Why:
Pourquoi ris‑tu ? / Pourquoi est‑ce que tu ris ? / Tu ris pourquoi ?
(Why are you laughing?)

Prepositions + question words (important):
À qui parles‑tu ? / Tu parles à qui ? (Who are you talking to?)
De quoi parle‑t‑on ? / On parle de quoi ? (What are we talking about?)

Special: qui est‑ce qui / qui est‑ce que
- Qui est‑ce qui + verb = emphasizes "who" as the subject: Qui est‑ce qui a frappé ? (Who was it that knocked?)
- Qui est‑ce que + subject + verb = emphatic object form: Qui est‑ce que tu as vu ? (Who is it that you saw?)

Common mistakes to avoid

Mixing forms: *Est‑ce que viens‑tu ?* → Use either Est‑ce que tu viens ? or Viens‑tu ?
Forgetting the -t- insertion: *Aime il ?* → Aime‑t‑il ? or Est‑ce qu'il aime ?
Wrong hyphenation: *Viens tu ?* → Viens‑tu ?
Inverting with a noun subject incorrectly: *Vient Marie ?* is usually avoided in modern French. Better: Marie vient‑elle ? or Est‑ce que Marie vient ? or Marie, est‑ce qu'elle vient ? (informal)
Misusing que/quoi: *Quoi est‑ce que tu fais ?* → Qu'est‑ce que tu fais ? or Que fais‑tu ? or Tu fais quoi ?
Overusing inversion in spoken French can sound overly formal or stiff for everyday conversation.

Quick reference — one‑line rules

Informal spoken yes/no: keep word order + rising intonation: Tu veux du café ?
Neutral spoken/written: Est‑ce que + subject + verb: Est‑ce que tu veux du café ?
Formal/written: invert verb + subject pronoun: Veux‑tu du café ?
For "what": Qu'est‑ce que (neutral) / Que fais‑tu ? (formal) / Tu fais quoi ? (informal)
For "who": Qui (subject) or Qui est‑ce que / Qui + inversion (object)

Glossary

Yes/no question (closed question): a question answered by yes or no.
Intonation: changing the pitch of your voice to signal a question.
Est‑ce que: a phrase placed at the start of a sentence to mark it as a question; neutral register.
Inversion: swapping the verb and subject pronoun and joining them with a hyphen to form a question; more formal.
Subject: who or what performs the action (je, tu, il/elle/on, nous, vous, ils/elles, or a noun).

Final tips

For everyday conversation start with intonation or est‑ce que — these are easiest and sound natural.
Learn inversion for more formal writing and for reading newspapers or literature.
Practice hearing the -t- link in spoken French: aime‑t‑il, va‑t‑elle, a‑t‑il.
When in doubt, use Est‑ce que — it always works and doesn’t change the word order.

Apply these rules with listening and speaking practice: hearing questions in real conversation will help you choose the right form automatically.