Formal:
* Avez-vous des frères et sœurs ? (Do you have brothers and sisters?)
* This is the most formal way to ask.
* Combien de frères et sœurs avez-vous ? (How many brothers and sisters do you have?)
* This is also formal and allows the person to specify the number of siblings.
Informal:
* Tu as des frères et sœurs ? (Do you have any brothers and sisters?)
* Combien de frères et sœurs tu as ? (How many brothers and sisters do you have?)
* T'as des frères et sœurs ? (Slang: Do you have any brothers and sisters?)
* Combien de frères et sœurs t'as ? (Slang: How many brothers and sisters do you have?)
To specify:
* Avez-vous des frères ? (Do you have any brothers?)
* Avez-vous des sœurs ? (Do you have any sisters?)
* Combien de frères avez-vous ? (How many brothers do you have?)
* Combien de sœurs avez-vous ? (How many sisters do you have?)
Key things to remember:
* Gender: The verb "avoir" (to have) changes based on the subject's gender (e.g., "avez" for "vous," "as" for "tu").
* Formal/Informal: Use the formal "vous" when speaking to someone you don't know well or in a formal setting. Use the informal "tu" with friends or family.
Let me know if you'd like to practice asking about siblings in different situations!