¿Hay alguien en casa?
English: Is there someone at home?
Indefinite pronouns in Spanish are words used to refer to people, things, or quantities in a general or non-specific way.
Use indefinite pronouns in Spanish when you want to talk about people or things without saying exactly who or what. They are common in questions, negative sentences, and when you don't know or don't want to specify details.
¿Hay alguien en casa?
English: Is there someone at home?
No veo a nadie.
English: I don't see anyone.
¿Quieres algo de comer?
English: Do you want something to eat?
No tengo nada en mi mochila.
English: I have nothing in my backpack.
Todos están listos.
English: Everyone is ready.