Complementació verbal:
teach taught taught

COMPL. OBJ. + TO INFINITIVE: Who taught you to juggle?
Qui et va ensenyar de fer jocs malabars?
THAT/WHAT + SUBORDINADA: 1) Socrates taught that speech-making is worthless as a means to imparting wisdom.
Socrates deia que per a donar saviesa, els discursos no valen res.; 2) I teach what I've been taught.
Ensenyo el que m'han ensenyat.