2018GMAT语法改错SC高频考点实例讲解 前置后置形容词特殊用法注意事项盘点

形容词的前置后置是GMAT语法中相当高频的考点之一，因为其变化形式众多很容易造成考生的认知混淆，在几个选项相似的情况下尤其容易误导大家做出错误选择。为了帮助考生摆脱对这一语法知识点的困惑，下面小编就为大家盘点GMAT语法前置和后置形容词的各类特殊用法和注意事项。

GMAT语法大百科语法点：前置与后置形容词的用法说明

1.如果是作为前置形容词:

即形容词位于句首,单独修饰主句的主语.

该形容词的作用和分词一样,逻辑主语必须一致,而且可以还原为完整的句子.

2.如果是作为后置形容词:

既形容词位于修饰对象之后,且两者之间有逗号隔开.

该形容词的作用作为定语就近修饰,可以还原为定语从句.

但如果定语从句中有情态动词,不可以省略为简单的形容词.

而且,后置形容词不可以像现在分词修饰整个句子.

在该种情况下,必须在形容词前面加上具体名词.

GMAT前置与后置形容词用法实例讲解

In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis.

(A) mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis

(B) mood swings, perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis

(C) between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis

(D) between mood swings, perhaps violent without being grounded in mental disease, from genuine manic-depressive psychosis

(E) genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease

选项分析：

首先，这句话用的是一个固定搭配distinguish between x and y，不能用from

另外，定从省略多见于省略(which/that+ is/are/was/were)，有情态动词时似乎不该省略。 而如果理解perhapsviolent without being grounded in mental disease为省略which is,就变成which is perhaps violent without being grounded in mental disease,读的就不顺畅。

所以最后答案是C