he/she will not do it
She'll never do it on her own.
He won't do it without her.
Perché Tom non lo farà?
Why won’t Tom do it?
Won’t they do it?
Mary dovrebbe dire a Tom che non lo farà.
Mary should tell Tom that she won't do it.
He said he would never do it.
Tom non lo farà da solo.
Tom won't do it alone.
Why won't he do it for me?
Tom non lo farà mai.
Tom will never do that.