we can be as proud as can be of you 是什么语法结构

we can be as proud as can be of you 是什么语法结构

是平级比较的依法结构，意思是我们可以和你一样骄傲，as...as是典型标志。
平级比较：
1、用as…as…,not…as/so…as…引导。
例句：Henry is a worker as good as Peter (is).
Henry does not have so/as many books I have.
It is generally belived that teaching is as much an art as it is a science.
2、as+形容词+as+数量词=数量词+形容词。
The building is as tall as 100 meters.=The building is 100 meters tall.
3、貌似平级比较结构的一些固定习惯用语
英语中有些看似是平级比较结构，实际上它们是一些习惯用语，它们是：as long as 只要，有……之久;as far as 远及……，就……而言;as soon as 一……就;as well as 既……又;as good as (=very nearly)与……几乎一样，简直。
例句：I will work as(so) long as I live.
只要活着，我就要工作。
As far as I know, he is a reliable person.
据我所知，他是一个可靠的人。

as + 形容词 + as + 形容词 + can be 是当代英语中的一种强调结构，该结构对形容词进行重复，从而表达了形容词的最高程度，其意思为“极其”、“…… 得不能再……”。
这一结构可以有多种省略形式，请看下列例子：
据我所知，格林先生的病况十分糟糕。
So far as I know, Mr. Green’s condition is as bad as bad could be.
So far as I know, Mr. Green’s condition is bad as bad could be. （省略第一个
as）
So far as I know, Mr. Green’s condition is as bad as could be. （省略后一个形
容词 bad）
So far as I know, Mr. Green’s condition is as bad as bad. （省略could be）

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