To determine whether to use "ser" or "estar," we can apply some general rules:
- "Ser" is generally used for identity, origin, profession, or characteristics that are considered permanent or long-lasting.
- "Estar" is generally used for temporary states or conditions, locations, or ongoing actions.
Now, let's analyze each sentence:
-
Yo ___ de Costa Rica.
- Here, we are talking about origin. Therefore, we should use "ser."
- Correct form: "Yo soy de Costa Rica."
-
Elena ___ muy cansada hoy.
- This sentence describes a temporary state (being tired). Therefore, we should use "estar."
- Correct form: "Elena está muy cansada hoy."
-
La hija de Marta ___ Carla.
- This sentence is identifying someone (Carla as the daughter of Marta). Therefore, we should use "ser."
- Correct form: "La hija de Marta es Carla."
In summary:
- Yo soy de Costa Rica.
- Elena está muy cansada hoy.
- La hija de Marta es Carla.