托福阅读句子简化题是托福阅读十大题型之一，需要我们把整个长句变短，提取其中的一些关键信息。这一类题型是很多考生比较头疼的题目类型。大家的头疼的原因多种多样，有单词方面，由句子结构方面，有逻辑关系处理方面。但不管怎么样，掌握句子简化题的解题方法是托福备考中不可逃避的。
接下来小编就为大家分享“逻辑解题法”解托福阅读句子简化题的具体操作方法，及注意事项。希望对大家的托福阅读句子简化题备考有所帮助。
逻辑解题法是指依据句子中的逻辑词来判断句子的逻辑结构，由此来选答案。这种方法的依据是句子简化不会改变逻辑。所以，首先，错误的逻辑顺序肯定排除，其次，选项必定含有同样的逻辑。
根据概念我们知道逻辑解题法的前提是熟悉句子里常见的逻辑关系词，确定句子的逻辑结构。比较常见的逻辑词有以下几类：
否定逻辑：no, not, neither, never等
因果逻辑:because of, owing to, in that, therefore ,thus, hence ,consequently等
条件逻辑：if ，unless ，suppose ，in case，as long as ,on condition that等
并列、转折逻辑：likewise, not only…but also…,both…and…,等；but, however, while, in spite of 等
让我们一边看题一边熟悉逻辑解题的方法：
Hills and mountains are often regarded as the epitome of permanence, successfully resisting the destructive forces of nature, but in fact they tend to be relatively short-lived in geological terms. As a general rule, the higher a mountain is, the more recently it was formed; for example, the high mountains of the Himalayas are only about 50 million years old. Lower mountains tend to be older, and are often the eroded relics of much higher mountain chains. About 400 million years ago, when the present-day continents of North America and Europe were joined, the Caledonian mountain chain was the same size as the modern Himalayas. Today, however, the relics of the Caledonian orogeny (mountain-building period) exist as the comparatively low mountains of Greenland, the northern Appalachians in the United States, the Scottish Highlands, and the Norwegian coastal plateau.
Which of the sentences below best expresses the essential information in the highlighted sentence in the passage？ Incorrect choices change the meaning in important ways or leave out essential information.(2)
A. When they are relatively young, hills and mountains successfully resist the destructive forces of nature.
B. Although they seem permanent, hills and mountains exist for a relatively short period of geological time.
C. Hills and mountains successfully resist the destructive forces of nature, but only for a short time.
D. Hills and mountains resist the destructive forces of nature better than other types of landforms.
首先，做题之前确定简化对象，就是划线部分的句子；
Hills and mountains are often regarded as the epitome of permanence, successfully resisting the destructive forces of nature, but in fact they tend to be relatively short-lived in geological terms.
其次，通读原句，确定逻辑；
看句子可以找到句子中的唯一的逻辑词but；
然后，用逻辑排除选项；
看选项有没有可以排除的。A、D选项中没有表示转折的逻辑词，排除。
最后，用逻辑中的对象来确定答案。
还剩下B、C选项，首先，看原句中，but前后是permanence与short-lived in geological terms的转折关系，所以正选中应该一样，c选项转折前是resist the destructive forces of nature，排除。确定答案B。验证也知B选项逻辑和原句一致。
最终用逻辑这一点就确定了答案。总结一下逻辑解题法的一般步骤。
首先，做题之前确定简化对象，即阴影部分的句子；
其次，通读原句，确定逻辑；
然后，用逻辑排除选项；
最后，用逻辑中的对象来确定答案。
其实大部分的题目以这种解题方法就很容易做题了，少数的例外就是不容易找到逻辑词的句子，需要大家识别隐藏的逻辑关系或者逻辑词比较多，界定不了主要逻辑，这就需要大家在做题时多多总结。希望本文的内容能够帮助大家备考托福，前程百利祝大家都能取得理想的考试成绩。
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