Unisciti! and Uniscitevi! are Italian equivalents of the English phrase "Join!" Context makes clear whether one "you" (case 1) or two or more "you all" (example 2) suits. The respective pronunciations will be "oo-NEE-shee-tee" in the singular and "OO-nee-SHEE-tey-vee" in Pisan Italian.
vuoi venire con me?
When translated from English to Italian a raccoon is a procione
"Out" in English is fuori in Italian.
"About" in English is circa in Italian.
"Or" in English is o in Italian.
"Not italian" in English is non italiano in Italian.
"To have" in English means avere in Italian.
"Who we are" in English is Chi siamo in Italian.
"And you?" in English is E tu? in Italian.
"About me!" in English is Su di me! in Italian.
Questa in Italian is "this" in English.
"You did" in English is Hai fatto! in Italian.