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OG12--SC—128题 求解

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楼主
发表于 2011-9-5 12:00:42 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式



正确答案E : Australia embryologists have found evidence to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved as a kind of snorkel.
疑问:
1.‘and ’两边应该平行 但是为 么 that the elephant is descended from an aquatic ,而 that its trunk originally evolved 一个一般现在时,一个过去时,这样平行吗?

2.假设上边句子成立,两个都表示在陈述事实,那么 把evolved改成 was evolved 可以吗?


求高人解答,不胜感激!
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沙发
发表于 2011-9-5 13:37:20 | 只看该作者
evolved就是谓语,是不及物动词evolve的过去式。
板凳
 楼主| 发表于 2011-9-5 13:44:59 | 只看该作者
evolved就是谓语,是不及物动词evolve的过去式。
-- by 会员 AlohaDJ (2011/9/5 13:37:20)



明白了它是谓语thx
但不明白为什么evolved要用过去时~
地板
发表于 2011-12-9 11:52:58 | 只看该作者
从意思上了解:因为象鼻作为水下通气管使用应该是大象还是“an aquatic animal”时期的事情,所以是过去时
句子中的线索:originally作为过去时的线索

snor?kel [countable] a tube that allows someone who is swimming to breathe air under water

o?rig?i?nal?ly   in the beginning, before other things happened or before things changed:
The family originally came from France.
The building was originally used as a prison.
We originally intended to stay for just a few days.
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