在托福的阅读里面，指代题，虽然题量不是很大，但是除了指代题以外的事实，信息题还有句子插入题，还有推断题很多的考点就是清楚的知道代词的指代，只有领悟了代词的指代很多题目才能够迎刃而解下面就来给大家详细的介绍一下指代题的相关内容。

　　例题1：

　　Paragraph 3: At the upper timberline the trees begin to become twisted and deformed. This is particularly true for trees in the middle and upper latitudes, which tend to attain greater heights on ridges, whereas in the tropics the trees reach their greater heights in the valleys. This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover. As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges, even though they are more exposed to high-velocity winds and poor, thin soils there. In the tropics, the valleys appear to be more favorable because they are less prone to dry out, they have less frost, and they have deeper soils.

　　The word they in the passage refers to

　　○valleys

　　○trees

　　○heights

　　○ridges

　　首先，在考察指代题时，代词“they”在题干中打上阴影，并且原文中代词“they”也打上了阴影，所以指代题不需要定位。

　　其次，在解答指代题时，我们只需要看两句话，一是代词所在的这句，二是前面一句。以这道题为例，我们这句话是由since引导的原因状语从句，主句的主语是trees, 然后trees所在的这句话又接了个even though引导的让步状语从句，而从句中的主语是代词，很明显它指代的就是主句中的主语，所以答案是“trees”。所以我们得出了一条规律：在主从复合句中，主语应该是一致的。