Should I use por or para?

Question

Es aconsejable que usted duerma para ocho horas todos los noches. or should I use por. Es aconsejable que usted duerma por ocho horas todos los noches. It's for a length of time but it's been a while since we went over por vs. para in my class. Also, which would be better todos los noches or cada noche. I can't decide which would be more appropriate and this is being graded so I could use someone's opinion. Gracias.

Answer 1

We don't use por nor para here

Es aconsejable que usted duerma ocho horas todas las noches.

Oh, sneaky. hahaha - puravidacanuck, Apr 27, 2010

Actually H we probably wouldn't use "for" here either. - Yeser007, Apr 27, 2010

Answer 2

I try to remember it like this, although there are exeptions: Por = for and para = in order to

I just wanted to point out that that is a general rule and cannot always be applied to everything. What Scott said can be applied most times but not always, so watch out. - MeEncantanCarasSonrisas, Apr 27, 2010

Answer 3

I would say, Es aconsejable que usted duerma por ocho horas cada noche.

In this case "por" must be used.

Noche is feminine gender.

Answer 4

Por. Check the Spanish reference. Great articles!

Noches is also feminine so it would be todas las noches.