When to Use Ser in Spanish
Here are some examples of when to use ser:
To express essential qualities or characteristics of someone or something that are not expected to change in the future
El cielo es azul. - The sky is blue.
Las flores son bonitos. - Flowers are beautiful.
Yo soy alta. - I am tall.
To tell time
Son las 10:00 de la mañana. - It is 10 o’clock in the morning.
Ya es la 1:00, ¿quieres comer? - It is already 1:00, do you want to eat?
Son las 11:00 de la noche. - It is 11:00 o’clock at night.
To describe relationships
Ella es mi esposa. - She is my wife.
Estos niños son suyos. - These children are hers/theirs/his.
Tu eres mi mejor amigo. - You are my best friend.
To express ownership or possession
La casa es suya. - The house is theirs.
Estos calcetines son tuyos. - These socks are yours
Es mi lápiz. - It is my pencil.
To express origin or identity (this also includes professions)
Las galletas son italianas. - The cookies are Italian.
Somos mexicanos. - We are Mexican.
Mi familia es de Estambul. - My family is from Istanbul.
Soy dentista. - I am a dentist.