than后面的is为什么不省略

What genetic modification seeks to do is modifying corps in a more planned way than is possible by merely selecting healthier seeds or by producing hybrids of successful plants.

这里than后面的is为什么不省略?

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最佳答案 2020-12-16 08:35

What genetic modification seeks to do is modifying corps in a more planned way than is possible by merely selecting healthier seeds or by producing hybrids of successful plants.
is 不可以省略。省略后 than 从句缺少动词。
在 than 之后省略系动词的情况,是不存在的。例如,下面这些句子不是省略,原本就没有系动词:
It is more than possible that he will not contest the seat. 
他很有可能不去竞选这一议席。
It's more than possible to make your fortune in Alaska - but I'd much rather find the future in Hawaii. 
在阿拉斯加你更有可能得到财富,但是我更愿意在夏威夷找到未来。

以上两句,more than 看作程度副词“超过;不止”,修饰形容词 possible。

如果在as...as...之后有possible,那是连同 it is (主语和系动词)一并省略的缘故。

We will get your order to you as soon as (it is)possible. 

我们将会把您的订货尽早送达。

《牛津高阶英汉双解词典》

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其它 1 个回答

mikee

如果这是改错的话,那么错的是modifying

应该改为

What genetic modification seeks to do is modify corps in a more planned way than is possible by merely selecting healthier seeds or by producing hybrids of successful plants.


至于is要不要省略,其实属于边缘地带问题,很难有一条清晰的规则来界定。见https://www.cpsenglish.com/question/21780

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  • 提出于 2020-12-15 08:32