GMAT考题OG2020-SC-804,SC句子改错真题解析

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今天分享一个SC句子改错真题解析。

SC句子改错原题

题目:Normally a bone becomes fossilized through the action of groundwater, which permeates the bone, washes away its organic components, and replaces them with minerals.

选项:

A,which permeates the bone, washes away its organic components, and replaces them

B,which permeates the bone, washes away its organic components, and those are replaced

C,which permeates the bone, washing away its organic components, to be replaced

D,permeating the bone, washing away its organic components, to be replaced

E,permeating the bone, washing away its organic components and replacing them

正确答案是:A

OG2020-SC-804真题解析

题目分析:通常情况下,骨头是通过地下水的一系列作用变成化石的,地下水会渗透到骨头中,冲走骨头的有机物质,并且用矿物质取代有机物质。

选项分析:

A选项:正确。which引导的定语从句,修饰underwater,之后说明了underwater会做的三个动作:渗透,冲刷,以及取代。

B选项:and后面是完整的一句话,此时,这句话不再是定语从句里的成分,而是和主句“bones become fossilized”并列,但“他们被取代”并不能和主句并列,而是属于underwater要做的动作之一;并且,定从里的两个谓语动词“permeates”和“washes away”之间没有连词,属于语法错误。

C选项:定语从句里,washing away成了修饰permeate的伴随状语,但逻辑上这两个动作之间应该是并列关系,而不是修饰关系。

D选项:doing和主句之间有逗号隔开,此时permeating是修饰主句谓语动词的伴随状语,且逻辑主语是和主句主语一致的,即bones。但很明显,并不能骨头渗透进骨头。

E选项:同D

如果你有什么疑问,后者想要交流讨论的,可以留言!

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