GMAT句子改错题(sentence correction)，是整个GMAT考试中对考生英语语法能力考查要求最高的题型，也往往是中国学生最为头疼的一类题目。没有扎实的语法基础和一定的逻辑分析能力，想要做好句子改错题难度极高。如何提升GMAT句子改错题的解题能力?下面小编就为大家整理了一些经典例题，结合实例分析为大家讲解GMAT句子改错题的解题思路和方法技巧。
实例题目：
As rainfall began to decrease in the Southwest about the middle of the twelfth century, most of the Monument Valley Anasazi abandoned their homes to join other clans whose access to water was less limited.
(A) whose access to water was less limited
(B) where there was access to water that was less limited
(C) where they had less limited water access
(D) with less limitations on water access
(E) having less limitations to water access
选项分析：
(A)whose access to water was less limited
【正确】 “clans(部族)”被“access”引导的定语从句修饰，“less limited”表意上不存在(C)中的歧义。
【大意】 当20世纪中叶西南地区的降水减少时，多数的纪念碑谷Anasazi人抛弃了他们的家园去加入其他用水更不受限的部族。
(B)where there was access to water that was less limited
【错误】 简洁明了：GMAT所考察的标准书面英语中，“there be”、“that/which/who be”结构不具有简洁性。“there was(从前有个)”和定语从句“that was……”使得本选项简洁性逊于(A)。
(C)where they had less limited water access
【错误】 句子意思：相比(A)选项，“less limited water access”表意不明，“less”既可以修饰“limited”表达“更不受限”，也可以修饰“water access”表达“更少的取得水的机会”。
(D)with less limitations on water access
【错误】 修饰成分：“less limitations”中“less”只能修饰不可数名词，不能修饰复数名词“limitations”。
(E)having less limitations to water access
【错误】 修饰成分：见(D)。
解题思路：
“less”不能修饰可数名词“limitations”，立即排除(D)、(E)。
(A)、(B)、(C)中(A)的表意优于(C)，简洁性优于(B)。因此选择(A)。
