问题
选择题
(2013·山东烟台市二模)Mr. Johnson, ________ as a manager for many years, found it hard to be an ordinary clerk again.
A．having worked
B．worked
C．to have worked
D．working
答案
答案：A
选A 考查非谓语动词。句意：由于已经当经理很多年了，Mr. Johnson发现重新做回一名普通职员很难。主语Mr. Johnson与work之间为逻辑上的主动关系，故应用现在分词形式，由空后的时间状语“for many years”可知，应该用完成式。