Are you in School? Can you go talk to a guidance coucelor and convey your concerns about your safety? You have to tell someone, your in a very unhealthy situation here. You cant not tell from fear, you have to find someone who can really help you where you wont be threatened. It can feel like your taking a chance here, but you are probably taking a bigger chance by allowing this treatment to continue.

Try to at least find ways to be other places where your not around him. Stay with friends more, find activities after school. Find a local horse farm, offer to help, that way you can be around kind animals and good people and away from him. That is what saved my life.
You have to be resouseful, thats what I did. I really planned ways for me to not be alone with the person as much as possible, the less access they have to you and the more people are around to witness, like being sure your parents are there when you are home. It will be better for you.

Open Eyes