They will buy a stock only at a reduced rate to what they perceive is its intrinsic value.

They/ will buy/ a stock/ only at a reduced rate/ to what they perceive is its intrinsic value.主语 谓语宾语 状语定语从句（先行词是stock,这是介词加关系代词引导的...谢谢详细的解说，介词加关系代词引导的定语从句。还有一问：按你说的正常语序的句子很容易理解，是value to the stock；但按原句顺序理解的话，从句的中心貌似是stock to value，有些翻译不通吧。这里有没有倒装的成分呢？再次感谢经你提醒豁然开朗，刚才句子我分析错了，我还有这样一个想法They/ will buy/ a stock/ only at a reduced rate to what they perceive is its intrinsic value.主语 谓语宾语 状语宾语从句这样翻译 他们这有在股票低到物有所值时才会买进to 这个介词在这里表示程度，达到什么样的地步，后面接一个宾语从句。如：be reduced to 100 减少到100 be reduced by 100 减少了100你觉得这样通吗？好像~~更好一些吧。不过这样解释的话对这里what的用法心里总有个小疙瘩似的what they perceive is its intrinsic value用这样一个主系表的结构表示一种程度感觉上有点别扭，不过从语法上来看我还分析不好总体来讲这句话有点让人纠结