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?

0 条评论
分类：比较结构

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》

15 条评论

刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编

擅长：语法理论,语言学,文化背景 | 采纳率 86% | 回答于 2020-12-15 10:28

默认排序时间排序

其它 1 个回答

mikee 2020-12-15 15:06

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