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：
By 1940, the pilot Jacqueline Cochran held seventeen official national and international speed records, and she earned them at a time when aviation was still so new for many of the planes she flew to be of dangerously experimental design.
(A) and she earned them at a time when aviation was still so new for many of the planes she flew to be
(B) earning them at a time that aviation was still so new for many of the planes she flew to be
(C) earning these at a time where aviation was still so new that many of the planes she flew were
(D) earned at a time in which aviation was still so new such that many of the planes she flew were
(E) earned at a time when aviation was still so new that many of the planes she flew were
选项分析：
(A)and she earned them at a time when aviation was still so new for many of the planes she flew to be
【错误】 句子意思：“so……to……”无法像(E)中“so……that……”一样表达“如此……以至于……”，因此无法体现“many of the planes she flew were of dangerously experimental design”是“aviation was still so new”的结果，表意逊于(E)。
(B)earning them at a time that aviation was still so new for many of the planes she flew to be
【错误1】 修饰成分：非谓语动词“earning”在本选项中作状语(动词的修饰语)，其逻辑主语为“Jacqueline Cochran”，与所修饰动词“held”的主语相同，这意味着“earning”是动词“held”的伴随状语，根据与法要求，“earning”应伴随所修饰动词同时发生且同(逻辑)主语，但这在语义上并不合理。
【错误2】 句子意思：见(A)。
(C)earning these at a time where aviation was still so new that many of the planes she flew were
【错误1】 修饰成分：见(B)中【错误1】。
【错误2】 代词指代：“these”本意上指代“records”，GMAT所考察的标准书面英语中，代词this、that、these、those如果单独使用(“those students”、“that of……”这样的结构就属于不单独使用)，其指代不明，因为书面语不能用手去指这指那。而(E)等选项合理规避了指代不明，因此在代词使用上优于本选项。
(D)earned at a time in which aviation was still so new such that many of the planes she flew were
【错误】 固定搭配：GMAT所考察的标准书面英语中不存在“such that”连用的搭配。
(E)earned at a time when aviation was still so new that many of the planes she flew were
【正确】 “earned at a time……”正确地就近修饰了“international speed records”。“so new that……”正确地使用“so(such)……that……”表达了“太……以至于……”的含义。
【大意】 到1940年，飞行员Jacqueline Cochran持有17个国家或国际的官方速度记录，这些记录是在航空仍然太新兴以至于许多她驾驶的飞机是危险的实验设计机型的时候得到的。
解题思路：
“such that”无此搭配，立即排除(D)，(B)、(C)是典型的误用“S(主语)+V(谓语)，doing”的结构，应排除。
(E)的“so……that……”表意后语(A)的“so……to……”，因此选择(E)。
