请教个弱问题：which, that指代。

GWD1－2，让我对自己的理解的which 和that 产生重大怀疑啊。普遍讨论的是which的指代问题。我一直理解为：

A OF/(其他介词) B that

 a OF/(其他介词) B, which

结构中，that which都是指代中心词A的，但是这点都被怀疑的话，是不是意味着，所有这种结构形式都是可能产生歧义的？

By merging its two publishing divisions, the company will increase their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging from obscure textbooks to mass-market paperbacks.

1. their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging

2. from 6 percent to 10 percent its share of the $21 billion book market in the country, which ranges

3. to 10 percent from 6 percent in their share of the $21 billion book market in the country, a market ranging

4. in its share, from 6 percent to 10 percent, of the $21 billion book market in the country, which ranges

5. to 10 percent from 6 percent its share of the country’s $21 billion book market, which ranges

有跳跃修饰的可能性，which,that指代最好不要绝对化，比如绝对修饰就近，绝对修饰中心词。也要根据逻辑，单复数来判断。

谢谢，谢谢。

我还以为修饰中心词的理解绝对错误呢。吓我一跳。

谢谢斑竹。