"During the week" in Spanish is "durante la semana". It is pronounced "do-RON-tay la say-MA-na". Please see the Related link below for confirmation of the translation.
La semana.
esta semana
La semana.
Cada semana.
This is how you would say it. What do you do on week ends?
fin de semana
Translation: Una semana
hace una semana
You say, "durante."
last week I swam = Nadé en la semana pasada
Cinco días por semana.
Tres veces a la semana.