"Do you have a calendar at your house?"
Translation:¿Tienes un calendario en tu casa?
How are we supposed to know to use the he/she/it form or usted instead of "you"?
It is optional to use the "tú" form "tienes" or "usted" form "tiene" here. It only depends on if you want to formally address the person.
Agreed! There is no indication that this should be formal, so both forms should be correct. However, Duolingo marked "tienes" as incorrect.
I think it is just "su" is formal and "tu" is informal. ¿Tienes un calendario en tu casa? ¿Tiene un calendario en su casa?
I said "en tu casa", but it picked up "en casa" and declared it correct. Given that the English sentence specifies "your house" (and duolingo seems to favor mirroring any sort of specificity), is there a reason to drop the article?
okee it is not clear for duolingo on what we are commenting. In the comment box they give one translation: '?Ustedes tienen un calendario en su casa?', but the excercise has another one:'Tiene un calendario en ...'. It does not seem wright because tiene is the he/she/it form while, do you have ... ?, is definately the you-form.
I used 'usted' and it was marked wrong for that; it doesn't expressly say to use 'tu.'