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：
She was less successful after she had emigrated to New York compared to her native Germany, photographer Lotte Jacobi nevertheless earned a small group of discerning admirers, and her photographs were eventually exhibited in prestigious galleries across the United States.
(A) She was less successful after she had emigrated to New York compared to
(B) Being less successful after she had emigrated to New York as compared to
(C) Less successful after she emigrated to New York than she had been in
(D) Although she was less successful after emigrating to New York when compared to
(E) She had been less successful after emigrating to New York than in
选项分析：
(A)She was less successful after she had emigrated to New York compared to
【错误1】 比较结构：“compared to ”比较的是“New York”和“her native Germany”，两者虽然可比，但本句的本意并不是比较这两个地点，而是比较两个地点上“Lotte Jacobi”的成功程度。
【错误2】 动词时态：表示“过去的过去”的过去完成时动词“had emigrated”确实发生在一般过去时的“was less successful”之前，但实际上“after已经体现了两者的时间先后关系，无需再使用过去完成时。
(B)Being less successful after she had emigrated to New York as compared to
【错误】 比较结构：类似地，见(A)中“比较结构”，“as compared to”两边比较的是“New York”与“her native Germany”。
(C)Less successful after she emigrated to New York than she had been in
【正确】 “she had been”说的是“Less successful after she emigrated to New York”之前的情况，为了突出这种“过去的过去”的含义，可以使用过去完成时。“Less successful……her native Germany”整体上是一个修饰“photographer Lotte Jacobi”的定语。
【大意】 摄影师Lotte Jacobi在她搬到纽约之后没有她在老家德国成功，但收获了一小群独具慧眼的粉丝，且她的摄影最终展览于美国各大画廊。
(D)Although she was less successful after emigrating to New York when compared to
【错误】 比较结构：“when compared to……”是从句省略的结构。语法上讲，被比较的应为“she(Lotte Jacobi)”和“her native Germany”，但两者并不可比。
(E)She had been less successful after emigrating to New York than in
【错误】 动词时态：“had been less successful”是“she(Lotte Jacobi)”来到“New York”之后的事，不应使用表达“过去的过去”的过去完成时。
解题思路：
根据比较对象应平行可比的原理排除(B)、(D)。
(A)、(E)误用了过去完成时。
(C)中正确使用了过去完成时，因此选择(C)
