现在完成时态

the past years可以搭配的介词有下面这些，可以注意区分:

He has been on dialysis for the past three years. 近三年来他一直在做透析。

She has won the race in the last five years. 过去5 年里，她一直是此项比赛的冠军。

Our region has made great advances over the past ten years. 在过去十年中，我们地区有了很大发展。

People have changed their diets a lot over the past few years. 过去几年里人们的饮食习惯改变了许多。

There’s been a progressive decline in the standard of living over the past few years. 最近几年的生活水准每况愈下。

Ben’s case is not unique but one of several I have come up against during the past few years. 本的案子并不特殊，我在过去的几年中也碰到了几起这样的案子。