As in English, questions terminate with a question mark.
quel, quelle, quels, quelles
Interrogative adjectives
quel : which or what
The interrogative adjectif must agree in numbers and gender with the noun to which the question refers.
Examples
singular masculine
Quel garçon joue le guitare? : which boy plays the guitar?
singular feminine
Quelle fille joue le piano?
plural masculine
Les quels pays sont en Europe? : Which contries are in Europe?
plural feminine
Les quelles femmes sont? :
qui
Interrogative pronouns
qui : who, whom
When asking questions about people you must use qui? : who ? or whom ?
Examples
Qui est la? : Who is there?
À qui est ce voiture ? : To whom does this car belong?
Qui est Jean Dupont? : Who is Jean Dupont?
que
Interrogative pronouns
quel : what
que is used in direct questions refering to things.
que becomes qu' when used before a vowel or H
Examples
Que dit le journal? : What does the newspaper say?
Que veut-tu? : What do you want? (informal)
Que voulez-vous? : What do you want? (formal)
The above examples are used for formal French and can sound rather "pompous" when spoken, generally you would replace que? with qu'est-ce que, for example
Qu'est-ce que tu a dit? : What did you say?
Qu'est-ce que vous allez faire? : What will you do?
Qu'est-ce qu'ils ont chanté? : What did they sing?
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