SC的五个选项就相当于五个人描述同一件事情，有一个人说的乱七八糟，牛头不对马嘴，让人摸不着头脑，有一个人表达不清，让人听得云里雾里，有一个人添油加醋，胡乱改变句子意思，有一个人说的八九不离十，差不多，但是感觉不全面完善，最后一个人说的清楚明白，言之有理。这就是正确选项。那么接下来就让我们一起七嘴八舌谈GMAT句子改错，看看GMAT句子改错到底是怎么一回事。
乱七八糟那个就是句子的基本结构和意思都没有弄好，甚至句子成分残缺构不成一个完整的句子，常见的有缺乏主语或者谓语，也就是常见的句子残缺。例如：The thirteen original British colonies in North America, some formed as commercial ventures, others as religious havens, each had a written charter that set forth its form of government and the rights of the colonists.
本题的B选项some being formed as a commercial venture, others as religious havens, all of which had written charters，如果把B选项放在划线部分，就会导致全句缺少谓语动词。
表达不清就是说事情表达不准确，常见的有指代不清楚，单复数不一致，时态不正确，对比平行不平行，还有用词修饰不正确。例如The Quechuans believed that all things participated in both the material level and the mystical level of reality, and many individual Quechuans claimed to have contact with it directly with an ichana (dream) experience.其中A选项contact with it directly with和B选项direct contact with it by way of中的it都是指代不清。
添油加醋改变句意的意思就是修饰位置错误，导致句子逻辑关系错误，比如连词错误或者副词位置错误等等，这样就会导致句子表达的意思有所更改，例如还是上一道题：The Quechuans believed that all things participated in both the material level and the mystical level of reality, and many individual Quechuans claimed to have contact with it directly with an ichana (dream) experience.选项C contact with the last directly through,其中directly有修饰contact或through an ichana experience的歧义，所以不正确，而D选项direct contact with the latter by means of，修饰词位置正确，direct直接修饰contact最合理。所以是正确答案。
说的差不多的但是感觉不好的指的就是不简洁，累赘，例如In Scotland, the number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting, by pollution, and by various other threats to the fish’s habitat.其中选项D，wild salmon’s numbers are reduced by deep-sea and coastal netting that is not controlled是这样的，其中that is not controlled不如uncontrolled简洁，所以虽然没有大面的错误，但是不简洁在GMAT中也是错误的。
以上七嘴八舌谈GMAT句子改错所讲的内容，就是官方指南对于GMAT 句子改错考察的重点说明，只有让句子语法结构都正确，语意逻辑都清晰，用词和修饰都准确合适，才是正确答案的标准。关于GMAT句子改错的正确答案标准就说这么多，希望考生能够掌握明白，清楚句子改错的考察用意，都能考出理想成绩，早日梦圆名校。
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