un : a.
un hombre : a man
un caballo : a horse
You see?
un : a ( Male, singular )
una : a ( Feminina, singular )
Unas : a ( Feminina, plural )
Unos : a ( Males/mixed, plural )
In Spanish, that is "es un matrimonio".
'en un' = 'in a'
Translation: Un Tigre
it is a...
A forest.
"A friend"
a good
A brother.
Husband
un abrazo
a breakfast
"Necesito un lápiz" means "I need a pencil" in Spanish.