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"Decidir" is a transitive verb which is often translated as "to decide", and "a la casa" is a phrase which is often translated as "to the house". Learn more about the difference between "decidir" and "a la casa" below.
decidir(
deh
-
see
-
deer
)
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
transitive verb
a. to decide
Su hija aún no ha decidido qué quiere estudiar.Their daughter has not yet decided what she wants to study.
a. to decide
Decidamos qué vamos a cenar.Let's decide what to have for dinner.
b. to choose
Al final decidimos quedarnos en vez de emigrar.In the end we chose to stay rather than emigrate.
decidirse
A pronominal verb always uses a reflexive pronoun. (e.g., Te ves cansado.).
pronominal verb
a. to make up one's mind
Todo lo que tienes que hacer es decidirte y pasar a la acción.All you have to do is make up your mind and take action.
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a la casa(
ah
 
lah
 
kah
-
sah
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. to the house
No puedes ir a la casa de un desconocido y esperar que te haga pasar.You cannot go to the house of somebody you don't know and expect him to invite you in.
b. into the house
Entramos corriendo a la casa cuando empezó a llover.We ran into the house when it started raining.
c. to ... house
Ayer fuimos a la casa de Felipe.Yesterday, we went to Felipe's house.
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