Is she worried?
Yes she is…
Ricordarti: il verbo to be ha una propria forma interrogativa e negativa, nella forma interrogativa il verbo si posiziona prima del soggetto.
I AM
YOU ARE
HE/SHE/IT IS
WE ARE
YOU ARE
THEY ARE
AM I?
ARE YOU?
IS HE/SHE/IT?
ARE WE?
ARE YOU
ARE THEY?
I’M NOT
YOU AREN’T
HE/SHE/IT ISN’T
WE AREN’T
YOU AREN’T
THEY AREN’T