Question

请教英语句子结构

请问在这个英语句子中
Experts estimate that ten times as much petroleum exists in such sources as tar sands, heavy oil, and perhaps even shale as in conventional reservoirs.
主Experts ， 谓estimate， that引导宾语从句， 问题就在that宾从的内部结构是怎样的呢？ 宾从的主谓各是什么呢？
谢谢

Answer 1

翻译：专家们估计：在诸如油砂，重油甚至可能是页岩此类的资源中，存在着十倍于常规储库所储有的石油。

解释：
1. that所引导的宾语从句中的结构分析如下：
1）主干：主语petroleum，谓语exists，地点状语in such sources
2）ten times as much为定语，修饰主语petroleum；
3）as tar sands, heavy oil, and perhaps even shale为介宾短语做后置定语，修饰宾语sources.
such...as...意思是“像...这样的...”；
4）as in conventional reservoirs为比较状语从句，其中含有省略为：
as in conventional reservoirs
= as (petroleum exists) in conventional reservoirs
此句的as为连词，引导该比较状语从句，且和前面的ten times as...构成as...as的倍数比较句型：倍数词ten time + as + 形容词原级much + 名词petroleum... + as....
该比较状语从句中，主语petroleum，谓语exists，都被加以省略（为避免和前面重复），in conventional reserviors为地点状语。

Answer 2

这是一个as as 的结构，第二个as 后省略了主语petroleum 和谓语动词exists。
关于as as 前使用倍数的结构，我可以推荐这个句子。'Four times' as many Herefordshire strawberries as 2010，这是来自bbc的新闻标题，意思是2011年赫里福郡的草莓产量是2010年的四倍。

如有谬误，望不吝指正。

Answer 3

ten times 主语 as much petroleum exists in such sources as tar sands, heavy oil, and perhaps even shale as in conventional reservoirs. as……as……状语

Answer 4

as……as…… 和……一样
在that从句中，有两个并列的分句，由as……as……连接，一个是much petroleum exists in such sources as tar sands,其中much petroleum是主语，exists谓语，地点状语。而另一个分句中， tar sands, heavy oil, and perhaps even shale as existsn conventional reservoirs，实际上省略一个动词exist。这样好理解了吧。