This is the 4th most frequent Spanish word.
a
The Spanish word "a" means "to," "at," or "on," depending on context.
Indicates direction or destination.
Voy a la tienda.
I am going to the store.
Used as a preposition before a direct object that refers to a person.
Invité a María a la fiesta.
I invited Maria to the party.
Used to introduce the infinitive verb that follows certain verbs.