(interrogative – used alone / relative – introduces a clause)
Translations
Je ne sais pas ce que je dois faire.
Qu'est-ce qui s'est passé ?
Used alone to ask about an unspecified thing, action, or situation. What is your name?
Used after a verb to introduce a noun clause, often with an infinitive, to show an action or thing that needs to be done. I don't know what to do.
Used at the beginning of a sentence to introduce a full nominal clause that represents the whole statement or thing being discussed. What he needs is a long holiday.
(interrogative – used before a noun in both interrogative and exclamative constructions)
Translations
quelS'accorde en genre et en nombre : quel, quelle, quels, quelles. What movie are we going to watch tonight?
Quel film allons-nous regarder ce soir ?
Used before a noun to request specific information about it. What movie are we going to watch tonight?
Used before a noun in exclamations to emphasize degree, amount, or quality (Exclamatory Determiner). You can't come to the party? What a shame!
Synonyms
what kind of
what sort of
which type of