and的作用

outsider0214 · 发表于 2013-10-14 17:50:40

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.

A strikes when special tactile hairs on its body are disturbed,
Bstriking when special tactile hairs on its body are disturbed, but
Cwhich strikes when special tactile hairs on its body are disturbed,
Dwhich,striking when special tactile hairs on its body are disturbed,
Estrikes when special tactile hairs on its body are disturbed and,

每次我的选项都和正确答案之间一步之遥，请问，E的and在这里有什么作用？必要的？

wyx85 · 发表于 2013-10-15 00:38:36

这个句子的主干是The caterpillar strikes and holds。两个谓语动词，需要连接词。根据logical prediction，这里的连接词是and，不能是but。
把不要的部分砍去，看句子主干，会比较明晰。

outsider0214 · 发表于 2013-10-15 08:21:29

wyx85 发表于 2013-10-15 00:38
这个句子的主干是The caterpillar strikes and holds。两个谓语动词，需要连接词。根据logical prediction ...

中间的插入语，很恼人~~~~

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