Your sentence
a+las+ocho+de+la+noche
Words in this sentence
a
to; by; at; Used before words referring to people, pets, or personified objects or places that function as direct objects: personal a.
Preposition
de
of; 's; used after the thing owned and before the owner; from (with the source or provenance of or at); of (expressing composition, substance); about (concerning; with regard to); of; from (indicating cause); of (indicates a quality or characteristic); from (with the origin, starting point or initial reference of or at); of (indicates the subject or cause of the adjective); from (with the separation, exclusion or differentiation of); than (in certain phrases); …
Preposition