We are in receipt of your letter dated Aug 10 ,and as requested was expressed you 3 catalogues for our refrigeration goods 谁帮我解释下这句的语法结构.后半句的.as requested was expressed you 这什么东西啊?怎么俩动词.是错误语法吗...也就是说 as requested,was expressed you 3 catalogues for our refrigrnation goods 用了倒装句？是不是本该是：3 catalougues was expressed 那如果这样说，应该用 were啊 因为是3 catalougues啊

1.你把as requested看成插入句就行了。所以你理解这个句子的结构时，可以把as requested拿掉，在看它的结构。and,( as requested,) was expressed you 3 catalogues for our refrigeration goods
这个用法，就和I Think的用法一样。
That book, I think, is interesting.
2.因为and后面的那个句子中，主语较长，所以后置了，也可以理解成倒装。

as requested was expressed you 3 catalogues for our refrigeration goods
动词没错.as requested应加个逗号,是状语
主语是3 catalogues for our refrigeration goods
谓语是was expressed
句子是被动语态
有点错:you前面加个to
句子翻译:如你要求,三本...目录已快递给你