Spanish phrase
¿De quién es esto?
Meaning
Whose is this?
When to use it
It asks who owns an object. It is a simple, everyday question.
Example dialogue
Hay un estuche en el suelo. ¿De quién es esto?
There is a pencil case on the floor. Whose is this?
Es mío. Lo dejé junto a mi mochila.
It's mine. I left it next to my backpack.