La forme interrogative simple
When conjugating in the present tense, the simple interrogative is formed by using est-ce que before an affirmative sentence. It is often used when asking questions to get a simple yes or no answer.Est-ce que+ subject+ verb… ?
Est-ce que tu joues au tennis ?Do you play tennis ?
Est-ce qu’ (before a vowel sound) + subject+ verb… ?
Est-ce qu’il joue au foot ?Does he play soccer?
In conversational French, we tend to form questions mainly by intonation and without the use of est-ce que.