GMAT语法题OG详解103,140

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GMAT语法题OG详解103/140

GMAT语法改错的难度一方面来自题干，另一方面来自选项，因为我们要依靠选项之间的差别来获得信息、寻求提示，其实这就反映了GMAT语法改错答案的特点--永远只有相对正确而不存在绝对正确。接下来小编就给大家介绍一下GMAT语法题，希望对大家备考GMAT语法考试有帮助。 103. El Nino, the periodic abnormal warming of the sea surface off Peru, a

phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated in the western Pacific to flow back to the east.

(A) a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated

(B) a phenomenon where changes in the ocean and atmosphere are combining to allow the warm water that is accumulating

(C) a phenomenon in which ocean and atmosphere changes combine and which allows the warm water that is accumulated

(D) is a phenomenon in which changes in the ocean and atmosphere combine to allow the warm water that has accumulated

(E) is a phenomenon where ocean and atmosphere changes are combining and allow the warm water accumulating

答案解析如下：

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(A)a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated

【错误】 句子结构：“El Nino”与“a phenomenon”没有谓语动词“is”，于是主句失去谓语，主谓结构不完整。

(B)a phenomenon where changes in the ocean and atmosphere are combining to allow the warm water that is accumulating

【错误】 句子结构：见(A)。

(C)a phenomenon in which ocean and atmosphere changes combine and which allows the warm water that is accumulated

【错误】 句子结构：见(A)。

(D)is a phenomenon in which changes in the ocean and atmosphere combine to allow the warm water that has accumulated

【正确】 “El Nino……is a phenomenon”构成了完整的主谓结构，“the periodic abnormal warming of the sea surface off Peru”是主语“El Nino”的同位语。“in which”引导的定语从句准确修饰了“a phenomenon”。

【大意】 厄尔尼诺，秘鲁外海洋表面周期性一场变暖，是一种海洋和大气变化合并起来使积累在西太平洋温暖海水得以向东回流的现象。

(E)is a phenomenon where ocean and atmosphere changes are combining and allow the warm water accumulating

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【错误】 修饰成分：在GMAT考察的标准书面英语中，“where”引导的定语从句只能用来修饰位置，但在本选项中“where”实际上是对“in which”的替代，用来修饰“a phenomenon”，解释其中的内容。

【错误】 平行结构：不同时态的动词并非语法上不可平行，但时态差异需要合理解释。在本选项中现在进行时的“are combing”与一般现在时的“allow”用“and”平行在一起，无法表达任何合理含义。表意明显逊于(D)中的“combine to allow(结合在一起去允许)”。

【最优解题思路推荐】

(A)、(B)、(C)的句子结构存在严重缺陷，立即排除。

“where”引导的定语从句只能用来修饰一个位置的概念，排除(E)。

因此选择(D)。

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