Interrogative Adjective (which / what)

Interrogative Adjectives in French (quel, quelle, quels, quelles)

Interrogative adjectives in French — quel, quelle, quels, quelles — are words you put before a noun to ask "which" or "what (kind of)." They always agree in gender (masculine/feminine) and number (singular/plural) with the noun they modify, and they stay placed directly before that noun. Think of them as the French equivalent of English "which" or some uses of "what."

What does "quel" mean and when do I use it?

Short answer: Use quel/quelle/quels/quelles whenever you ask about the identity, choice, or type of a noun.

- "Which book?" = "Quel livre ?"
- "Which dress?" = "Quelle robe ?"
- "Which friends?" = "Quels amis ?"
- "Which shoes?" = "Quelles chaussures ?"

Examples with a full question:
- "Quel livre veux-tu ?" (Which book do you want?)
- "Quelle robe préfères-tu ?" (Which dress do you prefer?)
- "Quels films as-tu vus ?" (Which films did you see?)
- "Quelles langues parles-tu ?" (Which languages do you speak?)

Note: In many contexts "quel" translates to English "what" rather than "which":
- "Quel est ton nom ?" (What is your name?)
- "Quelle heure est-il ?" (What time is it?)

How do I form quel? (gender and number)

Forms and agreement
- quel — masculine singular
- quelle — feminine singular
- quels — masculine plural
- quelles — feminine plural

Choose the form by matching the noun's gender and number.

Examples (each line: French — English):
- "Quel film ?" — "Which/what film?"
- "Quelle chanson ?" — "Which/what song?"
- "Quels livres ?" — "Which books?"
- "Quelles idées ?" — "Which ideas?"

Tip on gender/number: If the noun is feminine, use quelle / quelles. If plural, use quels / quelles. If you're unsure the noun's gender, it’s safer to learn the noun along with its article (le/la/les) so you know which form to use.

Where does quel go in a sentence? (word order and question forms)

Position: As an adjective, quel always comes before the noun it modifies: "quel + noun".

Question forms you will see:
- Inversion (formal): "Quel livre veux-tu ?" (Which book do you want?)
- est-ce que (neutral): "Quel livre est-ce que tu veux ?" (Which book do you want?)
- Intonation (informal/spoken): "Quel livre tu veux ?" (Which book do you want?)

Using "Quel est" / "Quels sont"
- "Quel est ton plat préféré ?" (What is your favorite dish?)
- "Quels sont tes films préférés ?" (Which are your favorite films? / What are your favorite films?)

Both patterns are common: use singular "Quel est" for singular nouns and plural "Quels sont" for plurals.

Translation: "which" or "what"?

In English, "which" usually implies choosing from a limited set and "what" is more open-ended. French "quel" covers both meanings; context decides whether to translate it as "which" or "what."

Examples:
- "Quel film veux-tu regarder ?" — often "Which movie do you want to watch?" (choosing from options)
- "Quel est ton métier ?" — "What is your job?" (identity)
- "Quelle est la date ?" — "What is the date?"

Common confusions and mistakes

1) Confusing 'quel' and 'lequel'
- Quel modifies a noun and must come with that noun: "Quel livre veux-tu ?" (Which book do you want?)
- Lequel (lequel, laquelle, lesquels, lesquelles) is an interrogative pronoun that replaces the noun: "Lequel veux-tu ?" (Which one do you want?)

Compare:
- Q: "Quel livre veux-tu ?" A: "Le roman rouge." (Which book do you want? — The red novel.)
- Q: "Lequel veux-tu ?" A: "Le rouge." (Which one do you want? — The red one.)

2) Don't mix up 'quel' and 'quelque/quelques'
- "Quel" = which/what. Example: "Quel jour sommes-nous ?" (What day is it?)
- "Quelques" = some, a few. Example: "J'ai quelques amis." (I have a few friends.)

3) Wrong gender/number
- Wrong: "Quel robe ?" — Wrong because "robe" is feminine.
- Correct: "Quelle robe ?"

4) "De quelle couleur" vs "Quelle couleur"
- To ask "What color is it?" use "De quelle couleur...":
- "De quelle couleur est ta voiture ?" (What color is your car?)
- To ask "Which color do you prefer?" use "Quelle couleur...":
- "Quelle couleur préfères-tu ?" (Which color do you prefer?)

5) Forgetting that 'quel' replaces the article
- Wrong: "Quel le livre ?"
- Correct: "Quel livre ?" (No article between quel and the noun.)

Agreement with past participles (special note)

When the noun asked about (the direct object) is placed before the auxiliary verb "avoir" — as it often is in fronted questions — the past participle agrees in gender and number with that noun.

Examples:
- "Quelle chanson as-tu chantée ?" — "chantée" agrees with "chanson" (feminine singular): (Which song did you sing?)
- "Quels livres as-tu achetés ?" — "achetés" agrees with "livres" (masculine plural): (Which books did you buy?)
- "Quelle robe n'as-tu pas portée ?" — "portée" agrees with "robe" (feminine singular): (Which dress did you not wear?)

If the noun is not placed before the auxiliary (for example, if you use a neutral word order or a pronoun), you may not see that agreement.

Exclamations with quel

"Quel" also appears in exclamatory phrases where it means "what a..." or "how..." These use the singular/plural and gender rules as well:

- "Quel beau paysage !" (What a beautiful landscape!)
- "Quelle belle surprise !" (What a nice surprise!)
- "Quels beaux souvenirs !" (What great memories!)
- "Quelle chance !" (What luck!)

Short answers and replacing the noun

If the noun is omitted in the answer, French speakers usually respond with a noun phrase, a demonstrative, or a pronoun:

- Q: "Quel livre veux-tu ?" A: "Le rouge." / "Celui-ci." (The red one. / This one.)
- Q: "Quelles chaussures portes-tu ?" A: "Celles-là." (Those ones.)
- Q: "Quels sont tes films préférés ?" A: "Les films de science-fiction." (My favorite films are science fiction films.)

Comprehensive examples by form

Quel (masculine singular)
- "Quel film recommandes-tu ?" (Which film do you recommend?)
- "Quel est le problème ?" (What is the problem?)
- "À quel moment arrives-tu ?" (At what moment will you arrive?)

Quelle (feminine singular)
- "Quelle ville veux-tu visiter ?" (Which city do you want to visit?)
- "Quelle est ta profession ?" (What is your profession?)
- "De quelle couleur est la robe ?" (What color is the dress?)

Quels (masculine plural)
- "Quels outils utilises-tu ?" (Which tools do you use?)
- "Quels sont tes objectifs ?" (What are your goals?)
- "Quels films as-tu déjà vus ?" (Which films have you already seen?)

Quelles (feminine plural)
- "Quelles villes as-tu visitées ?" (Which cities have you visited?) — note participle agreement: visitées
- "Quelles chansons connais-tu ?" (Which songs do you know?)
- "Quelles personnes peuvent venir ?" (Which people can come?)

Quick reference: common patterns

- Use quel + noun. Match gender and number.
- For inversion: "Quel + noun + verb-subject?" — "Quel livre as-tu lu ?"
- With est-ce que: "Quel + noun + est-ce que + subject + verb ?" — "Quelle robe est-ce que tu veux ?"
- For identity questions often use "Quel est..." or "Quels sont..." — "Quel est ton nom ?" / "Quels sont les ingrédients ?"
- Replace the noun with "lequel/laquelle/lesquels/lesquelles" if you want "which one(s)" without repeating the noun.

Glossary

Interrogative adjective: An adjective placed before a noun to ask a question about that noun (in French: quel, quelle, quels, quelles).

Agreement: Matching gender (masculine/feminine) and number (singular/plural) between adjective and noun.

Lequel: Interrogative pronoun (lequel/laquelle/lesquels/lesquelles) that replaces a noun and means "which one(s)."

Est-ce que / Inversion / Intonation: Different ways to form questions in French. "Est-ce que" is neutral, inversion is formal, intonation is informal spoken French.

Past participle agreement with avoir: When a direct object (here: the fronted noun introduced by quel) appears before the auxiliary "avoir," the past participle agrees in gender and number with that object.

Final tips

- Always choose the form of quel that matches the noun it modifies.
- Learn common nouns with their article (le/la/les) so you know whether to use quel/quelle/etc.
- Use "quel" where English might use either "which" or "what;" translate by sense, not by word-for-word.
- Watch for past participle agreement when the questioned noun is fronted in a passé composé question.

With these rules and the many examples above, you should be able to form clear, correct questions using quel, quelle, quels, and quelles. Practice noticing the noun's gender and number in real sentences — that is the key to using these words confidently.