My hair _is__ __longer_ than hers___.I _have___ __longer__ hair than _she__My cousin is the same age as me = I and my cousin are of the same age.=I am as old as my cousin.那么，I have longer hair than she's.是对的吗？如果错，又为什么错了呢？你是说:I have longer hair than she has???My hair _is__ __longer_ than hers___.My hair与hers比较, 这是主语比较. I_have_____longer__hair than _she__I 与she 比较, 也是主语比较,为什么要加has ?