为什么She has longer hair than (Tina) 而不是 (Tina's)
问题描述：
为什么She has longer hair than (Tina) 而不是 (Tina's)
答
She has longer hair than (Tina) 而不是 (Tina's)
两个比较对象为 两个不同的人,因此不需要TINA'S
句子还原后就是下面的句子
She has longer hair than Tina (has long hair 根据语法被省略掉了)