"Ustedes ya son adultos."
Translation:You are already adults.
from listening to a lot of spanish music and listening to my father speak, "ya" is primarily found at the beginning of the sentence but can be found after. But that is also similar to english just reverse, we often times put words like "yet" and "already" at the end of sentences don't we? So, I would say that you could place it before or after the verb but before the verb just sounds better.
well subject always comes first, so "ustedes ya son", but I think "ustedes son ya" can also be correct. think about the English sentence "I have eaten" you can say "I have already eaten" but it sounds better when you say "I have eaten already". Same in Spanish "ustedes ya son" just sounds better.
You are right. Also ive noticed for quite a while now that people frequently complain that their way out answers aren't accepted. When three possibilities are presented it seems people will pick the strangest one then complain if they get dinged. Doesnt make sense to me. If youve been reading the cimments regularly you know what i mean. If it's git four legs, a mane and a tail, it's probably a horse, not a zebra
Usted is the formal You in singular, while ustedes is the formal You in plural. Both require the verb to be in the third person of the respective numerus. E..g.: You are a good teacher - Usted es und buen maestro. You are good teachers - Ustedes son buenos maestros. I know it's pretty awkward to speak to someone, which by logic would require the second person of a verb, and yet use the third person. Yet this phenomenon is pretty common for Italian, German, Swedish and Polish, just to name a few. If it helps you, than a possible explanation why we use the third person when using usted or ustedes, then it might be because when using the formal for we want to keep a polite distance to the person we are addressing. The second person would then be too direct, so instead we use the third person, like if we were asking about someone else not the person we are talking to. Hope this helps!