"Do you have children already?"
Vertaling:Heb jij al kinderen?
Good question. When "al" is used to mean already and in a question, it comes before the noun. For example: Do you want to go to the store already? = Wil je al naar de winkel gaan? But, I'm on my way already (or I'm already on my way) = Ik ben al op weg. I hope this helps! Dutch can be very confusing.