There isn't a polite way to be creepy. I'll prove it right now. ahem
Hello kind individual. Might I say that you look stunning today? (conversation) Might I ask... Where do you live?
Don't know about you, but I'd run straight away.
I heard Dondé bebe usted..and then thought heh it works for me! Might come in handy sometime.
One is asking where you(a friend) live and the latter is asking where you(the respected member of society) live
It's correct. If it doesn't work for Duo, it has been forgotten in the database. Use the Report option to get it added in.
Would "¿Dónde vives tu?" be correct?
Although it sounds odd, seems like it should be, as it follows the same format as "¿Dónde vive used?"
No, because ¿Dónde vives? is always going to be direct at you(familiar) whereas, ¿Dónde vive? can mean "Where does he/she/it/you(formal) live. Emphasis sometimes needs to be made, in this case, the speaker put emphasis on usted because they could be talking to someone and there could be a group of other with this person being spoken to. So the speaker needed to emphasize that they were asking where the person they were speaking to lived and not the man, the lady, or even the dog lived. Make sense?
And remember, tú is you and tu is your. The accent changes the meaning
Yeah what's the difference between donde vives andd donde vives usted?
Well, for starters, vives is not used with usted..
There are three you verb forms in Spanish. Familiar, formal, and plural.
Familiar - Tú.. this is the familiar form used when speaking to friends, neighbors, and family, people you are familiar with. ¿Dónde vives? is how you would ask these people "Where do you live?"
Formal - usted.. This is used when speaking to all the strangers and people in a position of authority. In some Spanish cultures, this includes elderly, family included. Dónde vive usted? is how you would ask these people where they lived.
Plural - Ustedes... This is a group of people you are speaking with. When in your DuoLingo Spanish club you could either use the formal or plural form when asking where everyone lived(plural form would probably be correct) and that would look like ¿Dónde viven ustedes? for "Where do you [all] live?"
I can see someone saying this to an apparent lost child easily.
You ask. There's your answer.
Because if you were saying "where do YOU live" you would use "usted" or "tù" the person would know you are asking where they live rather than someone (he) else. Hope this helped