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。
The intricate structure of the compound insect eye, having hundreds of miniature eyes called ommatidia, help explain why scientists have assumed that it evolved independently of the vertebrate eye.
(A) having hundreds of miniature eyes called ommatidia, help explain why scientists have assumed that it
(B) having hundreds of miniature eyes that are called ommatidia, helps explain why scientists have assumed that they
(C) with its hundreds of miniature eyes that are called ommatidia, helps explain scientists’ assuming that they
(D) with its hundreds of miniature eyes called ommatidia, help explain scientists’ assuming that it
(E) with its hundreds of miniature eyes called ommatidia, helps explain why scientists have assumed that it
答案解析：
(A)having hundreds of miniature eyes called ommatidia help explain why scientists have assumed that it
【错误】 主谓一致：“help”的主语是“The intricate structure of the compound insect eye”，其核心词为“structure”，因该接单数谓语动词。
(B)having hundreds of miniature eyes that are called ommatidia, helps explain why scientists have assumed that they
【错误】 句子意思：本选项中“they”作为复数代词只能指代“miniature eyes”即“复眼”，是昆虫眼的一个附属结构，而(E)使用“it”指代“insect eye”大意为“昆虫眼和脊椎动物眼独立演化”，句意更加对等，表意更加合理，本选项语义逊于(E)。
(C)with its hundreds of miniature eyes that are called ommatidia, helps explain scientists' assuming that they
【错误】 句子意思：见(B)。
(D)with its hundreds of miniature eyes called ommatidia, help explain scientists' assuming that it
【错误】 主谓一致：见(A)。
(E)with its hundreds of miniature eyes called ommatidia, helps explain why scientists have assumed that it
【正确】 “it”正确地指代了“insect eye”，“helps explain”与其主语“The intricate structure of the compound insect eye”正确地保持了主谓一致。
【大意】 昆虫眼睛的复杂结构，有着上百个被称为“复眼”的结构，帮助解释为什么科学家假定了它是与脊柱动物的眼睛独立进化的。
【最优解题思路推荐】
根据主谓一致，立即排除(A)和(D)，(B)、(C)和(E)选项对比后，(E)代词使用更加合理，因此选择(E)。