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"It must have been" is a phrase which is often translated as "debe haber sido", and "noun" is a noun which is often translated as "el sustantivo". Learn more about the difference between "it must have been" and "noun" below.
it must have been(
iht
muhst
hahv
bihn
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. debe haber sido
I got to sit in the front row at a Paco de Lucia concert. - It must have been wonderful.Tuve la oportunidad de sentarme en la primera fila en un concierto de Paco de Lucía. - Debe haber sido maravilloso.
b. tiene que haber sido
It must have been difficult for Maria to testify against her mother in court.Tiene que haber sido difícil para María declarar en contra de su madre en la corte.
noun(
naun
)A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
1. (grammar)
a. el sustantivo (M)
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The noun must agree with the verb in number.El sustantivo debe concordar con el verbo en número.