托福阅读长难句是困扰很多考生的问题，很多同学因为看不懂句子导致失分严重。下面前程百利小编给大家搜集了几个托福阅读长难句，并对每一个句子进行了精析，最后还有意群训练供大家练习和巩固。大家一起来看一下吧。
1. The incentive of the farmers who wish to conserve water is reduced by their knowledge that many of their neighbors are profiting by using great amounts of water, and in the process are drawing down the entire region’s water supplies.
难句类型：并列句+复杂修饰+倒装
本句是一个由and引导的并列句，但是and前面的句子比较复杂，后面有一个倒装，所以句子读起来比较不舒服。首先来看and前面的句子，在farmers后面有一个由who引导的定语从句，隔开了主语The incentive和谓语is reduced，谓语后面是由by引导的原因状语，然后又由that引导了一个定语从句来修饰knowledge,其实前半句要表达的意思非常简单，就是这种节水的热情降低了，and后面的句子是一个倒装，全句正常的语序应该是The incentive of the farmers is reduced, and the entire region’s water supplies are drawing down.，就是说“节水的热情降低了，整个地区的水资源供应在减少”就可以了。
译文：
当那些想节水的农民得知邻居们通过大量耗水的种植而盈利的时候，他们的热情降低了，从而导致了整个区域的供水量的减少。
意群训练：
The incentive of the farmers who wish to conserve water is reduced by their knowledge that many of their neighbors are profiting by using great amounts of water, and in the process are drawing down the entire region’s water supplies.
2. Timberline trees are normally evergreens, suggesting that these have some advantage over deciduous trees (those that lose their leaves) in the extreme environments of the upper timberline.
难句类型：插入成分和状语衔接构成了复杂的从句
本句的主句结构其实特别简单，就是Timberline trees are normally evergreens，但是后面跟了一个suggesting that引导的从句，说这个显示了什么，从句的内容比较复杂，让同学们读了之后忘记了主句结构其实很简单。其实从句就读these have some advantage over deciduous trees就足够了，后面的括号中的插入成分和表示地点的状语都是次要内容，(those that lose their leaves) in the extreme environments of the upper timberline，同学们扫一眼就行了。
译文：
树带界线内通常是常绿树木，他们和处于上行树带界线处极端恶劣环境中生长的落叶树木相比，具有一定的优势。
意群训练：
Timberline trees are normally evergreens, suggesting that these have some advantage over deciduous trees (those that lose their leaves) in the extreme environments of the upper timberline.
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