They're exhausted, they want to be home. - if only
If only they were already home.
They're so tired, they don't want to have to study so much. - if only
If only they didn't have to study so much.
He's sad. He wants a girl to love him. - wish
He wished a girl loved him.
She's angry because her mobile phone is cracked. - wish
She wishes her mobile phone wasn't cracked.
He's uhappy because his car is broken. - if only
If only his car wasn't broken.
She doens't have money now, but she wants to travel around the world. - if only
If only she could travel around the world.
He doesn't know what to do. - wish
He wishes he knew what to do.
She sings very badly. - wish
She wishes she could sing well.
He's lost. He wants to find his way home. - wish
He wishes he could find his way home.