求助一个比较状语从句的省略语法点

哆啦Vc梦

在CR题目里看到一个选项看了八百遍看不懂，感觉是比较状语从句的省略，求大腿们指导！

A layer of primer on an airliner weighs more than a layer of the new coating would by an amount large enough to make a difference to that airliner's load-bearing capacity.

would by是个什么结构。。。比的两方是primer和new的weight嘛，后面那个would by balabala修饰的是啥？谁又对capacity产生巨大影响晕。。。

fxxxfxxx

是would weigh， 省略了前面的verb，是很常见的结构。

一抹斜阳

飞机上的primer涂层的重量大于新型涂层的重量，而这一重量上的差距足以影响到飞机的载货能力.

哆啦Vc梦

fxxxfxxx 发表于 2017-7-25 09:58
是would weigh， 省略了前面的verb，是很常见的结构。

would weigh是虚拟吗在这里？would byXXX是强调重量差异的程度嘛？would weigh的主语是不是还是句子主语primer layer？
非常感谢！！！

fxxxfxxx

哆啦Vc梦 发表于 2017-7-25 22:03
would weigh是虚拟吗在这里？would byXXX是强调重量差异的程度嘛？would weigh的主语是不是还是句子主语p ...

primer weighs more than new coating would weigh by how much? By an amount large enough to bla bla

would算不算虚拟我不知道，意思你明白了就好

哆啦Vc梦

fxxxfxxx 发表于 2017-7-25 23:39
primer weighs more than new coating would weigh by how much? By an amount large enough to bla bla
...

好的明白啦~谢谢