Por qué no comes

why don't you eat

→ por
phrase Rare #30,952
why don't you eat In a direct question, it suggests or asks why someone should not eat. In an embedded question, it means “why you don't eat.”
SP: ¿Por qué no comes con nosotros?
EN: Why don't you eat with us?

¿Por qué no comes?

Why aren't you eating?

— La Linterna Roja (1991)

¿Por qué no comes vegetales?

Why don't you eat vegetables?

¿Por qué no comes algo de verdura?

Why don't you eat some vegetables?

¿Por qué no comes verdura?

Why don't you eat vegetables?

¿Por qué no comes algo?

Why don't you eat something?

— Barfi! (2012)

¿Por qué no comes, cariño?

Why aren’t you eating, sweetheart?

— El Campo de los Sueños (1989)

¿Por qué no comes cerdo?

Why don’t you eat pork?