In French, simple questions—or interrogative sentences—can be formed in three main ways. The most casual method is intonation, where you simply raise your voice at the end of a regular statement: Tu aimes le chocolat? (Do you like chocolate?). A slightly more formal and commonly used structure is “est-ce que”, placed at the beginning of the sentence: Est-ce que tu aimes le chocolat ?. Before a vowel sound, “est-ce que” becomes est-ce qu’. Finally, the most formal or literary way is inversion, where the verb and subject are reversed and joined by a hyphen: Aimes-tu le chocolat ?. All three forms can also be used with question words like où (where), quand (when), pourquoi (why), and comment (how), depending on what information you’re asking for.