The last few years has seen great changes in this country对吗

in the last few years是什么时态 in the last few years=over the years吗 the last/next/first 相当于冠词?the last few years a few years什么东西? for the last few years和 in the last few years的区别 during the last few years与during the last a few years有区别吗? in the past few years 过去完成时 in the last few years 现在完成时 in the past 一般过去时 in the past few years和in the last few years的区别, in the last few years 为什么要加 the in the last few years还是in the last few yearRT in the last few years 用什么时态 in the last few years 有 在最近几年里 in the last few years 造句急需啊! In the last few years my life_____(change) a lot. in the last / past few years的用法 in the last few years 用于现在完成时吗? In the last few years,there _______ great changes in the country.A.had been B.were C.have been D.h说明为什么 为什么不用has By+现在时间 by+过去时间 in the past few years in the last few years 各是什么时态? 句型转换.Mike studied a lot last year.(用in the last few years改为句子） Mike _____ _____a lot inthe last few years.