GMAT语法题，又称句子改错题(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，想要做好语法题难度极高。怎样做好GMAT语法题?下面小编就通过一些经典真题的实例解析，为大家全面讲解GMAT语法题的解题思路和方法技巧。
实例题目：
A proposal has been made to trim the horns from rhinoceroses to discourage poachers; the question is whether tourists will continue to visit game parks and see rhinoceroses after their horns are trimmed.
(A) whether tourists will continue to visit game parks and see rhinoceroses after their horns are
(B) whether tourists will continue to visit game parks to see one once their horns are
(C) whether tourists will continue to visit game parks to see rhinoceroses once the animals’ horns have been
(D) if tourists will continue to visit game parks and see rhinoceroses once the animals’ horns are
(E) if tourists will continue to visit game parks to see one after the animals’ horns have been
选项分析：
(A)whether tourists will continue to visit game parks and see rhinoceroses after their horns are
【错误1】 代词指代：“their horns are……”中代词“their”是主语的一部分，根据平行指代优先原则，“their”在语法上完全可以指代“tourists”，而其本意上指代“rhinoceroses”，因此指代不明。
【错误2】 句子意思：“continue to visit……and see……”的平行结构语法上没有任何问题，但语义上没有“continue to visit……to see……”(“to see”表示“visit”的目的)更加合理。
(B)whether tourists will continue to visit game parks to see one once their horns are
【错误】 代词指代：见(A)中【错误1】。
(C)whether tourists will continue to visit game parks to see rhinoceroses once the animals' horns have been
【正确】 (前半句翻译略);问题是游客是否将会继续参观狩猎公园来看犀牛，一旦这种野兽的角被剪掉了。
(D)if tourists will continue to visit game parks and see rhinoceroses once the animals' horns are
【错误】 固定搭配：在GMAT考察的标准书面英语中，表达二中择一的“是否”的含义时，只用“whether”引导从句，不用“if”。
(E)if tourists will continue to visit game parks to see one after the animals' horns have been
【错误】 固定搭配：见(D)。
解题思路：
表达二中择一的“是否”的含义时，只用“whether”引导从句，不用“if”，立即排除(D)、(E)。
看到代词找指代，而(A)、(B)中代词“their”存在指代不明的问题，表意逊于(C)，因此选择选择(C)。
