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"Mi casa" is a phrase which is often translated as "my house", and "su casa" is a phrase which is often translated as "his house". Learn more about the difference between "mi casa" and "su casa" below.
mi casa(
mee
kah
-
sah
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. my house
¿Dónde vives tú? - Mi casa es aquella del fondo a la derecha.Where do you live? - My house is the one at the end on the right.
a. my home
Me gusta rodearme de mis objetos más queridos para sentir que este barco es mi casa.I like to be surrounded by my most cherished objects so I can feel this ship is my home.
su casa(
soo
kah
-
sah
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. his house (masculine)
A word or phrase that is masculine (e.g., el libro).
¿Es esa de la esquina su casa?Is that his house on the corner?
b. her house (feminine)
A word or phrase that is feminine (e.g., la manzana).
Marisa se acaba de mudar, así que no he estado en su casa todavía.Marisa just moved so I haven't been to her house yet.
2. (formal) (your dwelling; second person singular)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
a. his home (masculine)
A word or phrase that is masculine (e.g., el libro).
Efraín se mudó de su casa en Cali a una habitación de hotel en Bogotá.Efrain moved from his home in Cali to a hotel room in Bogota.
b. her home (feminine)
A word or phrase that is feminine (e.g., la manzana).
Mirtha es una excelente anfitriona. Todo el mundo se siente bien en su casa.Mirtha is an excellent hostess. Everybody feels good at her home.
4. (formal) (your household or the place where you belong; second person singular)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
a. your home
Esta ciudad es su casa. Yo creo que usted no podría vivir en ningún otro lugar.This city is your home. I don't think you could live anywhere else.