French has three ways to turn a statement into a yes/no question, from casual to formal:

Method	Example — “Do you speak French?”
1. Intonation — just raise your voice at the end	Tu parles français ?
2. Est-ce que at the front	Est-ce que tu parles français ?
3. Inversion — verb first, then the pronoun, joined by a hyphen	Parlez-vous français ?

• Intonation is by far the most common in conversation.
• Est-ce que is neutral and always safe. Before a vowel it becomes est-ce qu': Est-ce qu'elle habite ici ?
• Inversion sounds formal. You'll mostly meet it in writing and in set phrases such as Comment allez-vous ? and Parlez-vous anglais ?

There's no helper like English do: Do you like…? is simply Tu aimes… ?