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  3. The caterpillar of the geometrid moth strikes when special tactile hairs on its body are disturbed, after capturing its prey, ho

The caterpillar of the geometrid moth strikes when special tactile hairs on its body are disturbed, after capturing its prey, ho

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问题 The caterpillar of the geometrid moth strikes when special tactile hairs on its body are disturbed, after capturing its prey, holds the victim so that it cannot escape.
选项 A、strikes when special tactile hairs on its body are disturbed,
B、striking when special tactile hairs on its body are disturbed, but
C、which strikes when special tactile hairs on its body are disturbed,
D、which, striking when special tactile hairs on its body are disturbed,
E、strikes when special tactile hairs on its body are disturbed and.
答案E
解析 本句的句子结构比较少见，对于考生来讲，该题具有一定难度。先看B，假设B对，代回原句后会发现该句的句子结构不全，该句结构简化为：名词+现在分词短语(when从句限定此现在分词)，but+介词短词，动宾结构+so that目的状语从句。问题马上暴露出来：(1)有转折连词but，但前后却无转折关系；(2)but之前的第一个分句中无谓语动词，句子结构不完整，排除B。对于选项C，代回原句可简化为：名词+which限定定性从句(其中包括when时间状语从句)+after短语(时间状语)，谓语+宾语+so that目的状语，结构同样有问题，因为在一个when从句之后马上又是一个after时间短语，就会产生歧义，不知此after短语是修饰之后的holds，还是修饰which从句中的strikes，排除C。D错，因为一旦把D代入会发现该句不完整，缺谓语，在此处holds变成了which定语从句的谓语。再对A、E进行比较，之间的细微差别仅一个and，由strikes和未划线的holds，可以确认两者属并列结构，and必不可少，放弃A而选E。本句的结构为：主语+谓语+when从句+and，状语从句，谓语+宾语，第一个when从句修饰strikes；而第二个after短语省略了动作执行者the caterpillar，修饰holds，通过and的“桥梁连结”作用，表明两个谓语动词并列，并使得句子结构清晰，且完整。请牢记此句型。(这里再补充GRE阅读中的两个类似结构的例子：1．Verdi took a popular genre-bourgeois melodrama set tomusic and，without altering its fundamental nature，transmuted it into high art．2．Proust elicited vitalmemories of his own and，finding subtle connections between them，began to amass the material forRemembrance．)
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