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：
While all states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines the types and amounts of waste produced, as well as the cost of disposal.
(A) all states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines
(B) each state faces a similar industrial waste problem, their predominant industries and regulatory environment obviously determine
(C) all states face a similar industrial waste problem; their predominating industries and regulatory environment obviously determines
(D) each state faces similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determines
(E) all states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine
选项分析：
(A)all states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines
【错误】 主谓一致：“determines”的主语是“the predominating industries and the regulatory environment”，主谓不一致。
(B)each state faces a similar industrial waste problem, their predominant industries and regulatory environment obviously determine
【错误】 代词指代：代词“their”本意上想指代“state”，但“state”是单数，因此无法指代。
(C)all states face a similar industrial waste problem; their predominating industries and regulatory environment obviously determines
【错误1】 主谓一致：见(A)。
【错误2】 代词指代：见(B)。
(D)each state faces similar industrial waste problems; the predominant industries and the regulatory environment of each state obviously determines
【错误】 主谓一致：见(A)。
(E)all states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine
【正确】 “all states”和“face”保持了主谓一致，“the predominant industries and the regulatory environment of each state”和“determine”保持了主谓一致。而“while”正确地连接了前后两个主谓结构。
解题思路：
“the predominant industries and the regulatory environment”是一个复数的概念，无法连接“determines”，立即排除(A)、(C)和(D)。
(B)中代词“their”犯了“无法指代”的错误，立即排除。
因此选择(E)。
