语法选择有关 as 的语法点

As a result, Man may disappear ____ who became too overspecialized, or outlived their environment.

A. as other specials do

B. as do other species

C. as have other specials

D. as were other species

答案选 C 。

1、没有搞懂为什么是用 have 跟倒装。

2、还有就是 as 在这里是做连词吧？

3、这里有省略成分吗？感谢！

As a result, man may disappear as have other species who became too overspecialized, or outlived their environment.

这是 as 引导方式状语从句（正如......），演变一下：

As a result, man may disappear as other species have (disappeared). 因此，人类可能会像其他物种一样消失。从句使用现在完成时，因 disappear 重复，一般承前省略。

可以倒装，提前操作词 have，照顾匀称，尤其 species 后面有很长的修饰成分（定语从句）时。

1. As a result, man may disappear as have other species (disappeared).

2. As a result, man may disappear as have other species who became too overspecialized, or outlived their environment.

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 2021-10-15 08:36

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好题 2021-10-11 10:17

擅长：英语

我看你这个题里打字错误太多，一会儿specials, 一会儿species. 我想应该是species. 而且答案也不对。我看应该是：as did other species.

1. 比较从句主语包含定语从句，比较从句谓语部分要倒装。

2. as 是连词。

3. 不要理解为有省略成分，英语就是这么表达。