"Our cup is between the plates."
Translation:Il nostro bicchiere sta fra i piatti.
http://italian.about.com/od/grammar/a/italian-preposition-tra.htm Someone gave us this site previously. It is excellent.
I can see a reason for confusing sentences if you know and speak the language. We are learning and all of this confusing stuff doesn't help. It is hard enough to learn and remember words and their three or more meanings without throwing in all of these exceptions to the rule stuff this early in the game