The verb ser (to be) - in Spanish plays an important role, since it is used to confirm the value of its attributes to the subject. For example: Vera es alta. - Vera is tall. Pablo es listo. - Pablo is smart.
Verb conjugation SER
Yo
Soy
I'm
Tú
Eres
You are
Él, Ella, Usted
Es
He, She, You is
Nosotros
Somos
We are
Vosotros
Sois
You are
Ellos, ellas
Son
They are
When the verb ser is used
The verb to be - expresses an inherent property or permanent state and denotes:
Personal Soy Carmen. - I'm Carmen.
Membership El perro es de Juan. - The dog belongs to juan
Origin Mis amigos son de Madrid. - my friends are from Madrid
Nationality Somos españoles. - We are spanish.
Occupation El padre de María es arquitecto. - Maria's father is an architect
The material something is made of El reloj es de oro. - The watch is made of gold
Inherent property Carlos es muy alto. - Carlos is very tall.
Date Son las cinco. -It's five o'clock. Hoy es Lunes. - Today is Monday.
Impersonal expressions Es mejor esperar. - It's better to wait.Es difícil aprender. - It's difficult to learn.