Mi jefe está enfermo y por eso tengo que trabajar = "My boss is sick, and therefore I have to work." "for the sake of", "for the benefit of" Todo lo que hago, lo hago por ti. = "Everything I do, I do [it] for you." "in favor of" Yo voto por el partido de derecha. = "I vote for the right-wing party." "by" (the agent of a passive construction) La nueva ley fue mal redactada por el partido gobernante = "The new law was badly written by the governing party." "for" (a period of time; often replaced by durante) Vivieron en Nueva York por tres meses. = "They lived in New York for three months."