Phrases Interrogatives: les Trois Registres

French is unusual among major European languages in offering three grammatically distinct ways to ask the same question. Are you coming? can be Tu viens ? (rising intonation), Est-ce que tu viens ? (a fixed interrogative frame), or Viens-tu ? (subject-verb inversion). All three are correct. All three mean exactly the same thing. The difference between them is register — how formal or informal the moment is — and a French speaker chooses one or another based on whether they are texting a friend, writing a school essay, or addressing a notary.

This page lays out the three forms, the rules for each, and the situations where each one is the right choice. Mastering this trio is non-negotiable for A1: questions are everywhere in conversation, and using the wrong register is one of the clearest tells of a non-native speaker.

Form 1: Intonation (informal/spoken)

The simplest French question form is no transformation at all. You take a declarative sentence and pronounce it with rising intonation at the end. The word order stays exactly the same as a statement; only the prosody changes. In writing, the question mark is the only signal.

This form is the workhorse of spoken French. In conversation between friends, family, colleagues — basically any context that is not a formal interview, a written exam, or an official document — intonation is what native speakers use. It is shorter, faster, and feels natural in the mouth.

Wh-questions also work this way in casual speech, with the question word usually at the end:

Notice that quoi (what) is used at the end of a sentence in this informal form, where formal French would use que. Notice also the French typographic convention: a non-breaking space sits between the word and the question mark (Tu viens ?, not Tu viens?). Most word processors insert this automatically when the keyboard is set to French.

Form 2: Est-ce que (neutral, all registers)

The second form uses the fixed phrase est-ce que (literally is it that) at the beginning of the sentence. The rest of the sentence stays in declarative order. This is the safe default — neutral in register, accepted in writing and speech, and the form most commonly taught to learners first.

The que contracts to qu' before a vowel sound: Est-ce qu'il..., Est-ce qu'elle..., Est-ce qu'on.... This elision is mandatory.

For wh-questions, the question word goes at the very front, followed by est-ce que:

The last example is worth pausing on: qu'est-ce que combines two separate elements. The first qu' is the contracted que meaning what; the rest est-ce que is the question frame. So the literal breakdown is what + is it that + you do. This is why it looks so heavy on paper — and why French speakers often shorten it to tu fais quoi ? in casual speech.

Form 3: Inversion (formal/written)

The third form inverts the subject pronoun and the verb, joining them with a hyphen: viens-tu ? instead of tu viens ?. This is the formal or literary question form, used in writing, official documents, news, formal speech, and the dialogue of educated characters in literature.

The hyphen is mandatory and the pronoun comes immediately after the verb. With je, inversion is largely avoided in modern French except with a handful of common verbs (puis-je, suis-je, ai-je, dois-je) — the form parle-je exists in old grammar books but sounds bizarre today.

The euphonic -t-

When a verb ending in a vowel (-e, -a) meets a vowel-initial pronoun (il, elle, on), French inserts a euphonic -t- between them, separated by hyphens on both sides. This is purely for ease of pronunciation — it has no grammatical meaning.

The -t- appears with verbs whose 3rd-person singular ends in -e (most -er verbs in the present, like parle, mange, donne) or -a (the futur simple, like parlera, donnera, and the verb aller in va). Verbs whose 3rd-person singular already ends in -t or -d need no insertion: vient-il ?, prend-elle ?, fait-on ?.

Complex inversion (with a noun subject)

When the subject is a noun, French does not invert the noun directly with the verb. Instead it uses a compound structure: noun + verb + matching pronoun. This is called complex inversion or inversion complexe.

The pattern is mechanical: state the noun subject, then apply standard inversion using the pronoun (il, elle, ils, elles) that matches the noun in number and gender. The euphonic -t- still applies (Marie parle-t-elle...).

For wh-questions with inversion, the wh-word goes first, then the inverted verb-pronoun:

The last example, Comment allez-vous ?, is the standard formal greeting in French — and a perfect illustration of how inversion sits naturally in formal contexts.

Comparison: when to use which

The mapping is not rigid — a friend asking a careful question over coffee might use est-ce que, and a casual newspaper article might use intonation in a quoted dialogue. But the central tendencies are clear:

• In speech, native speakers use intonation the vast majority of the time, est-ce que occasionally for clarity, and inversion rarely outside of fixed expressions (Comment allez-vous ?, Voulez-vous...?).
• In writing, the choice depends on the genre. Casual writing (texts, social media, informal emails) uses intonation. Standard writing (essays, business communication, journalism) uses est-ce que or inversion, often mixing the two for variety. Formal writing (academic prose, literature, legal documents) leans heavily on inversion.

A note on negative questions

All three forms can be made negative. The negation wraps the verb in the usual ne...pas pattern:

A negative question in French expects an answer using si (yes, contradicting the negative) rather than oui: Si, je viens (Yes, I am coming — i.e., contrary to your assumption that I'm not). This is one of the few places where French has a richer yes/no system than English.

Common Mistakes

Key Takeaways

French questions come in three forms, distinguished by register more than by meaning. Intonation (Tu viens ?) is the everyday spoken form: declarative word order, rising tone, casual register. Est-ce que (Est-ce que tu viens ?) is the safe default for any context: a fixed interrogative frame placed in front of declarative word order. Inversion (Viens-tu ?, Pierre vient-il ?) is the formal written form: the subject pronoun and verb swap places, hyphenated, with a euphonic -t- inserted before a vowel-initial pronoun, and complex inversion with noun subjects. Choose the form that matches the moment — intonation for chat, est-ce que for default writing and neutral speech, inversion for formal prose. As a learner, est-ce que is the lowest-risk choice; recognition of all three is non-negotiable.