Preposition AT
¿Quién fue el responsable de todo ese ruido anoche?
+ preposition OF...
Grammatical elements that serve to give their own characteristics to people, animals or things.
The italian city of Florence is famous of its art treasures.
I think she's arriving tonight, but i'm not sure of that.
Cierto/ seguro DE o SOBRE...
Did you know he was married? No, I wasn't aware of that.
Fond/ proud/ ashamed/ jealous/ envious
Estoy seguro de que eres capaz de pasar el examen.
I'm sure you are capable of passing the examination.
Adjectives - good. -bad. -excellent. -hopeless..
Certain/ Sure OF or ABOUT...
Erik was ashamed of being told what he forgot..