导语及核心内容：托福阅读：用示例理顺句子简化题解题思路，句子简化题是新题型之一，在这里我们先讲解一下。对于句子简化题，有一些题目如果句子不长，我们做题的基本原则就是：同义替换。找到原句中的关键词在选项当中进行同义替换。

句子简化题 Sentence Simplification questions

　　句子简化题是新题型之一，在这里我们先讲解一下。对于句子简化题，有一些题目如果句子不长，我们做题的基本原则就是：同义替换。找到原句中的关键词在选项当中进行同义替换。例如

　　In evolutionary history, the development of language set humans apart from the rest of the animal kingdom. Which sentence 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.

　　A. Humans evolved as the most powerful species after they are developed language.

　　B. The creation of human language has its origins in the language of animals.

　　C. The emergence of language distinguished early humans from other animals.

　　D. Humans and animals developed completed different systems of communication.

　　先来看题干：Which sentence 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.

　　该题要求从选项中选择一个能够表达原文阴影句子核心信息的句子。很多同学采用翻译的方法做题，即首先翻译原句，然后逐个翻译四个选项。这种做法不仅浪费时间，而且对我们读句子的能力要求极高。更好的做法是，首先判断句子的核心信息。这是考题当中为数不多的原句比较简单的句子释义题，原句的核心概念在于强调区分(apart from)。因此找到同义替换，即是C 项当中的distinguished。但是大多数题目的原文不会是一个简单句，多数是带有逻辑关系的复杂句。那么简单的同义替换技巧就无法操作了。如何快速解决这种题型呢?我们主要分两个部分来解析。

　　其实，我们在读原句的时候并不需要完整的彻底的摄取信息，相反，我们通过快速浏览，只需要关注两个关键点：一是原句当中的表示程度，频率的词，二是原句当中的逻辑关系。并不需要吸收所有信息，只需要快速浏览将所关注的信息点抓住即可，这样便节省了大量的时间。

　　The extreme seriousness of desertification results from the vast areas of land and the tremendous numbers of people affected, as well as from the great difficulty of reversing or even slowing the process. Which sentence 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.

　　A. Desertification is a significant problem because it is so hard to reverse and affects large areas of land and great numbers of people.

　　B. Slowing down the process of desertification is difficult because of population growth.

　　C. The spread of deserts is considered a very serious problem that can be solved only if large numbers of people in various countries are involved in the effort.

　　D. Desertification is extremely hard to reverse unless the population is reduced in the vast areas affected.

　　解题思路：

　　句子中最核心的信息首先就是该句的逻辑关系。原句的逻辑关系可以由result from 来判断，为因果关系。借此我们就可以缩小选项范围，首先排除掉C,D 选项。剩下的A,B 两个选项均包含因果的逻辑关系。接下来我们可以根据句子的第二种核心信息：主语，来判断。原句的主语是Desertification 沙漠化，而B 项的主语是Slowing down the process of desertification 减缓沙漠化进程。所以排除掉B 选项，A 为正确答案。