"I want to know if you are free tomorrow."

Translation: Voglio sapere se sei libero domani.

[CaraDePauUK]

Why sei and not the subjunctive sia. I tried sia and it said i used the io form sia instead of the tu form sei. This is nonsense, the subjunctive is the same for both is it not?

[AnnaB592696]

I also want to know the answer to why this isn't subjunctive!

[Viaggiatore]

They're not exactly the same. It's the difference between knowing a fact (sapere) and knowing a person (conoscere). http://my.lifeinitaly.com/threads/5171-conoscere-vs-sapere

[Gleaner3]

Why not the subjunctive in the "se" clause?

[Budd01]

I also would like to know why the subjunctive is not used here.
I believe "voglio sapere se che tu sia disponibile domaini" is a valid translation. It was marked incorrect.

[ackworth]

why is conoscere incorrect?

[sivo64]

Conoscere is used for "know" in the sense of being acquainted with, as in, "I know her", "I know that city". Careful not to use "sapere" with persons, because that would mean you "know" them in a "biblical way".

[SylviaArle1]

Why not "libera", fem.??

[allangottlieb]

Why se and not si: voglio sapere si sei libero domani

[MAUROIJoao]

it is the same concern i have

[crollyanne]

I put 'se stai libero'. Why is it 'sei' and not 'stai' in this sentence?

[Lisa_Kay_]

FYI: "Voglio sapere se domani sei libero." was also accepted.

[Gilly153492]

Why cant you say .....' se tu sei libero' it was marked incorrect?

[alevitzky]

Why is "libere" incorrect?

[3Kroliki]

When are you going to update your software to recognize the formal and plural "you" ? My translation was the same as the above, except I wrote: "...se Loro sono liberi domani. Your program said this was incorrect!