网友要善用本网。在搜索栏搜“as 作为”或者百度搜“as 作为 柯帕斯”,就能找到你想要的答案:as表示“作为”时引出的短语的逻辑主语问题
另外可见夸克《英语语法大全》(华东师大出版社)第 1556 页
[c] 当 as-短语与一个位于句末的成分有关或与任何成分都没有关系时,它有时放在句首。这时它类似无依附分句:
? As a protection against inflation, we must seek increasingly to diversify our investments.
? As a professor of political science, it has been interesting to spend a year in Germany. [大概:“…I have found it interesting…”]
该书中 ? 表示讲本族语的人不能肯定其可接受性