"I'm back" and "I've come back" are literal English equivalents of the Italian phrase Sono tornata. The pronunciation of the present indicative in the first person singular with a feminine adjective (or of the present perfect in the first person feminine singular) will be "SO-no tor-NA-ta" in Italian.
"Fortunate I am!" in English is Sono fortunato! in Italian.
Sono innamorata! in Italian means "I'm in love!" in English.
Sono tuo in Italian means "I'm yours" in English.
Sono bella! in Italian means "I'm beautiful!" in English.
"Am" in English means (Io) sono in Italian.
Sono le sette in Italian means "They are the seven" in English.
Vi sono sorprendenti! in Italian means "You are amazing!" in English.
"I agree!" in English is Sono d'accordo! in Italian.
"I am happy!" in English is Sono felice! in Italian.
"I am envious!" in English is Sono invidioso! in Italian.
"I am not Italian!" in English is Io non sono italiano!in Italian.
Vi sono sorprendenti! in Italian means "You're amazing!" in English.