during
during the past few years用什么时态？
the past few years用什么时态？
during the past years用于现在完成时。
during the past years翻译为：在过去的几年里。
during：
prep.在…期间;在…期间的某个时候
例句：
I never bought her any flowers during the past years that we got along with each other.在过去我们相处的这些岁月里，我还从来没有给她买过花呢。
With the development of science, technology and society, the market environment has changed tremendously during the past years.
随着科技的.发展和社会的进步，市场环境发生了巨大的变化，出现了许多以前没有遇到过的新问题。
遇到句子中有inthepastfewyears，前面应该用什么时态？
in the last few years 在最后几年里in the past few years 在过去的几年里in the past few years 用于现在完成时态.例:He has done three books of this kind in th past few years.在过去的几年里 他已经完成了三本这样的书。
in the last two years用什么时态？
in the last two years用现在完成时。相当于in the past two years.中文意思是“在过去的两年时间里”
例如，在过去的两年时间里，他为家乡的各项建设共捐款达一千多万。
In the last two years, he has donated more than 10 million yuan to the construction of his hometown.
英语two years和two-year的区别？
1、词性不同
1）two-year -old是数字与名词组成的形容词，用来修饰名词。
例句：This toy was made by a two-year -old boy.
这个玩具被一个两岁的男孩买了。
2）two years old为单词组合，短语。
例句：The baby is two months past two years old.
这个婴儿已经过了两年两个月大了。
2、用法不同
1）two years old 只可以做表语， 意思是两岁。
例句：I am two years old.我两岁了。
2）two-year-oldtwo-year-old 只可以做定语，意思是两岁的。
例句：I am a two-year-old boy.我是一个两岁男孩。