GMAT语法句子改错题是GMAT语文考试中一个非常重要的题型，难度相对其他部分要简单一些，是我们的得分环节，但是依然会有很多考生在这类题型丢失分数。考生在备考中可以在相关练习中总结答题要点。
GMAT语法句子改错题实例分析内容希望帮助大家攻克GMAT语法句子改错题型，掌握答题思路和解题技巧。
At the end of the 1930s, Duke Ellington was looking for a composer to assist him – someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well in order to finish the many pieces he had started but never completed.
(A) someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well in order to finish
(B) someone who could not only arrange music for his successful big band, but also mirror his eccentric writing style in order to finish
(C) someone who not only could arrange music for his successful big band, but also to mirror his eccentric writing style in finishing
(D) that being someone who could not only arrange music for his successful big band, but mirroring his eccentric writing style for finishing
(E) being someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well, finishing
答案解析：
(A)someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well in order to finish
【错误】 平行结构：“not only X, but also Y” (“only”可换成“just”、“merely”等，“also”可以省略)属于平行结构，X与Y代表的结构必须严格平行，即语法功能一致、逻辑含义对等，此处“not only”和“but”连接的结构语法功能不一致，因此不平行。
(B)someone who could not only arrange music for his successful big band, but also mirror his eccentric writing style in order to finish
【正确】 “not only arrange……but also mirror……”正确地使用了平行结构
【大意】 在20世纪90年代末，Duke Ellington正在寻找能够帮助他的作曲家——一个不仅能为他的成功品牌编排音乐也能反映出大的超凡风格来完成它已经开是创作但尚未完成的乐谱的人。
(C)someone who not only could arrange music for his successful big band, but also to mirror his eccentric writing style in finishing
【错误】 平行结构：见(A)。
(D)that being someone who could not only arrange music for his successful big band, but mirroring his eccentric writing style for finishing
【错误】 平行结构：见(A)。
(E)being someone not only who could arrange music for his successful big band, but mirror his eccentric writing style as well, finishing
【错误】 平行结构：见(A)。
【最优解题思路推荐】
看到平行结构标志词“not only……but……”立即判断两边是否平行，从而，直接选出(B)。
