原句：作为金融专家，麦克建议我们投资股票市场。（stock）

(1) Original Chinese sentence:

Working as a financial specialist, Mike advised that we should invest in the stock market.

As a financial expert, Mike suggested our investing in the stock market.

As a financial expert, Mike suggested to us that we should invest in the stock market.

As a financial expert, Mike advised us to put some money in the investment of the stock market.

    习题标准答案也是正确的：As a financial expert, Mike advised us to invest our money in the stock market. 

    As a writer , she's excellent, but as a teacher she's not very good. 作为一名作家，她是优秀的；但是作为一个老师，她不太行。（摘自 Longman Dictionary of American English）

    As a scientist, he was dedicated to the truth. 作为一名科学家，他献身于真理。（摘自赵振才：《英语常见问题解答大词典》）

    【参考】 as 相当于“considered as”解释时，通常要用不定冠词。例如：As a physician , he does not deserve much praise . But as a teacher , he has no equal among his colleagues .（摘自《新编高级英语语法》p.283，章振邦主编，上海外语教育出版社2012年12月第1版）