haber()
An auxiliary verb, or helper verb, is a conjugated verb that comes before a main verb and determines the main verb's tense, mood, or aspect (e.g., I have gone.).
a. to have
Nunca habían ido a Costa Rica antes del verano pasado.They had never been to Costa Rica before last summer.
An impersonal verb is a verb with no apparent subject (e.g., Llueve en España.).
3. (to exist)
a. to be (used with "there")
No hay azúcar.There is no sugar.
No hubo tiempo para saludar a todos en la fiesta.There wasn't enough time to say hi to everyone at the party.
a. no direct translation
The following examples show ways to translate this word or phrase without using a direct equivalent.