Question

The old man, ____________abroad for twenty years, is on the way back to his moth

The old man, ____________abroad for twenty years, is on the way back to his motherland.
A. to work
B. working
C. to have worked
D. having worked

Answer 1

答案D
本题考非谓语动词。句中两个逗号中间的内容应是时间状语，故全句解释为：在国外工作了二十年后，这位老人（已动身）正在归国途中。不定式作状语，多表目的和结果，不合句意，排除A、C，分词作状语可表时芦销宴间、方式、伴随。此处是已完成的主动斗尺的动作，不是正在进陪银行当中的主动动作，所以排除B，选D，现在分词完成式表主动和完成（到谓语发生时，非谓语的动作已完成）。