As it goes on

As it goes on
 

How would one say "as it goes on" or "as time passes"? For example, how would I say "As the poem goes on, the stanzas get shorter"? Or "As time passes, the world becomes better"?

Thanks a bunch!

Sugiero "Como procede" o "Como pasa" según el contexto de la frase.

Mi manera de traducirlo:

As the poem goes on = Conforme/Acorde avanza el poema.
As time passes = Conforme/Acorde pasa el tiempo.

Con "como" me parece un poco ambiguo; no transmite la idea de "proceso en desarrollo".