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"Hay que" is a phrase which is often translated as "one must", and "es necesario" is a phrase which is often translated as "it's necessary". Learn more about the difference between "hay que" and "es necesario" below.
hay que(
ay
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
b. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Hay que llenar la solicitud a mano.The application must be filled out by hand.
Hay que trabajar mucho para ser exitoso.You have to work hard to be successful.
es necesario(
ehs
neh
-
seh
-
sah
-
ryoh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. it's necessary
¿Quieres que pase la noche aquí contigo? - No, no es necesario. Vete a casa, papá.Do you want me to spend the night here with you? - No, it's not necessary. Go home, Dad.
b. it's needed
Es necesario un mayor esfuerzo presupuestario para sostener el sistema de salud.A greater budgetary effort is needed to help sustain the health system.
c. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Es necesario que seamos más tolerantes.We should be more tolerant.
Es necesario pagar impuestos para tener buenos servicios públicos.You need to pay taxes to have good public services.