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"A las siete" is a phrase which is often translated as "at seven", and "cuarenta" is an adjective which is often translated as "forty". Learn more about the difference between "a las siete" and "cuarenta" below.
a las siete(
ah
 
lahs
 
syeh
-
teh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. at seven
¿Quieres que vayamos a tomar algo juntos después del trabajo? Yo salgo a las siete.Would you like to have a drink with me after work? I finish at seven.
b. at seven o'clock
El despertador sonó a las siete.The alarm clock went off at seven o'clock.
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cuarenta(
kwah
-
rehn
-
tah
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. forty (cardinal)
La montaña está a cuarenta millas de aquí.The mountain is forty miles from here.
b. fortieth (ordinal)
Celebraron su cuarenta aniversario de boda.They celebrated their fortieth wedding anniversary.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. forty
Diez por cuatro es igual a cuarenta.Ten times four is equal to forty.
a. forties
La última vez que un proyecto de infraestructura se completó en la ciudad fue en los años cuarenta.The last time a major infrastructure project was completed in the city was in the forties.
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