是I hurt my leg.还是the bike hurt my leg.为什么?

I hurt my leg相当于My leg was hurt.
hurt的主语一般是人,如you hurt me(你伤害了我）.
或者It hurts(某个人说的话或者行为很伤人).这里是心灵上的创伤,像自行车这样的不用这么表达.就像你会说I broke my arms.而不会说The bike broke my arms.