问题描述: (过去三年来,他积累了很多工作经验)he __ __ __ __ in his work over the past three years 1个回答 分类:英语 2014-11-04 问题解答: 我来补答 He has gained much experience in his work over the past three years.over the past three years ,这个时间短语应该用完成时(其实我觉得用一般过去时也可以) 展开全文阅读