问题描述：
As long ago as the fourteenth century an Englishman made a discovery 这里两个as 分别是什么用法
As long ago as the fourteenth century an Englishman made a discovery
都是副词 表大约的意思
as fourteenth century 修饰 long ago ,
As long ago 修饰谓语
As long ago as the fourteenth century an Englishman made a discovery
都是副词 表大约的意思
as fourteenth century 修饰 long ago ,
As long ago 修饰谓语
问题解答：
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