It has to be a Mirror.
I am all around you, but you cannot see me. I have no throat, but you can hear me. Valued during summer but despised in the winter. What am I?
If you see me, I see you. If you move, then I will move too. When you touch me, I touch you. I do everything you do except for one thing. No matter how hard I try, I can never speak. What am I?
When you stop and look, you can always see me; if you try to touch you can't touch me; I can't move, but as you near me, I will move away from you. What am I?