在托福阅读备考过程中遇到重难点句型在所难免，为了帮助大家提前将这些问题解决掉，下面我们将托福阅读长难句的典型句型介绍给大家，在考前我们将这些难住我们的句型一一消化掉，下面启德考培小编就来看下托福阅读长难句的典型结构的部分内容。

　　托福阅读长难句的典型结构:

　　1.

　　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.

　　2.

　　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.

　　3.

　　Estimates indicate that the aquifer contains enough water to fill Lake Huron, but unfortunately, under the semiarid climatic conditions that presently exist in the region, rates of addition to the aquifer are minimal, amounting to about half a　centimeter a year.

　　难句类型：插入结构

　　本句其实并不是很难，就是有个插入结构和同位语在作怪，如果我们跳过插入结构和省略掉最后的同位语，句子就变成了Estimates indicate　that the aquifer contains enough water to fill Lake Huron, but unfortunately, rates of addition to the aquifer are minimal.这个句子就不难理解，同学们只要能读出来这个句子的核心意思是：这个含水层水很丰富，但是蓄水率却很低。理解这个句子就足够了。

　　译文：

　　据估计，奥加拉拉蓄水层的含水量足以填满休伦湖，但不幸的是，在目前该地区半干旱的气候条件下，奥加拉拉蓄水层的蓄水能力极低，每年仅半厘米左右。

　　意群训练：

　　Estimates indicate that the aquifer contains enough water to fill Lake Huron, but unfortunately, under the semiarid　climatic conditions that presently exist in the region, rates of addition to the aquifer are minimal, amounting to about　half a centimeter a year.

　　4.

　　For example, some early societies ceased to consider certain rites essential to their well-being and abandoned them,nevertheless, they retained as parts of their oral tradition the myths that had grown up around the rites and admired them for　their artistic qualities rather than for their religious usefulness.

　　难句类型：复杂修饰

　　本句的主句结构应该是some early societies ceased to consider certain rites and abandoned them, nevertheless, they retained as parts of their oral tradition and admired them for their artistic qualities.在rites后面有essential to their well-being做后置定语的修饰成分，在tradition后面有一个the myths that had grown up around the rites的同位语从句，在artistic qualities后面有一个rather than for their religious usefulness进行转折。同学们只要能够读出来本句的核心意思是“一些早期社会的人们取消了仪式。虽然如此，人们还是保留了那些口头传述故事的传统，是因为出于它们的艺术性。”

　　译文：

　　例如，一些早期社会的人们认为有的仪式对他们的幸福生活来说不再是必需品，并且取消了那些仪式。虽然如此，人们还是保留了那些口头传述故事的传统并且热爱从这些仪式里发展起来的神话，出于它们的艺术性，而不是宗教原因。

　　意群训练：

　　For example, some early societies ceased to consider certain rites essential to their well-being and abandoned them,nevertheless, they retained as parts of their oral tradition the myths that had grown up around the rites and admired them　for their artistic qualities rather than for their religious usefulness.

　　5.

　　In lowland country almost any spot on the ground may overlie what was once the bed of a river that has since become buried by　soil; if they are now below the water’s upper surface (the water table), the gravels and sands of the former riverbed, and its　sandbars, will be saturated with groundwater.

　　难句类型：复杂修饰+省略

　　本句也是一个由分号隔开的并列句，主句结构是 almost any spot on the ground may overlie what was once the bed of a river; if they　are now below the water’s upper surface, they will be saturated with groundwater.但是作者在river后面用that引导了一个定语从句修饰一下river，在surface后面用括号和两个插入成分the gravels and sands of the former riverbed，and its sandbars,打乱了分号前后两个并列句自己内部的主谓宾结构的连贯性。所以阅读时就十分困难。所以我们的对策仍然是先读主干，不重要的定语、状语、同位语、插入成分纷纷略过，读出核心意思来即可。

　　译文：

　　低地区域上的任何位置可能就是曾经的河床，后续被土壤覆盖而变成现在的样子。如果那些河床和沙洲现在位于地下水位之下，一定会有大量的地下水浸在它们的沙砾和沙石之间。

　　意群训练

　　In lowland country almost any spot on the ground may overlie what was once the bed of a river that has since become buried by soil; if they are now below the water’s upper surface (the water table), the gravels and sands of the former riverbed,and its sandbars, will be saturated with groundwater.

　　6、

　　Sediments are also dropped where a river slows on entering a lake or the sea, the deposited sediments are on a lake floor or　the seafloor at first, but will be located inland at some future date, when the sea level falls or the land rises; such beds　are sometimes thousands of meters thick.

　　难句类型：复杂修饰+插入成分

　　本句的主句结构应当是Sediments are also dropped，but will be located inland at some future date; such beds are sometimes　thousands of meters thick.这是一个由分号隔开的并列句，分号前面的句子结构比较复杂，Sediments are also dropped，后面跟了一个由where引导的状语从句,紧接着这个状语从句又加上了一个插入结构， the deposited sediments are on a lake floor or the seafloor at　first, 然后才开始进行转折but will be located inland at some future date,但是马上又跟上了一个由when引导的状语从句。分号后面的半句比较简单 such beds are sometimes thousands of meters thick.同学们面对这样的句子一定要先找主干，把状语从句、插入结构纷纷跳过，从纷繁复杂的句子中找出主干来，才能不被ETS出题人改写的句子所迷惑。

　　译文：

　　当河流汇入湖泊和海洋的时候也会有沉淀，这些沉淀最初在湖底或海底，但将来海平面下降或者陆地崛起时，它们就会分布于内陆，通常厚达几千米。

　　意群训练:

　　Sediments are also dropped where a river slows on entering a lake or the sea, the deposited sediments are on a lake floor or the seafloor at first, but will be located inland at some future date, when the sea level falls or the land rises; such beds　are sometimes thousands of meters thick.如果想了解更多关相关信息，请关注启德考培长沙分校平台，免费获取备考提分解决方案，或欢迎 点击这里 进行网络咨询，我们会给您提供专业的服务。最后，预祝大家能在托福考试中取得理想中的成绩。