漫长的四年过去了。

Four long years passed.

youdao

我应该想到过去的四年半。

I should think about half past four years.

youdao

过去四年我尽了自己的一份力量，现在轮到你来养活她了。

I have done my share these last four years and now it is your turn to provide for her.

youdao

I would say absolutely. And I would say even I could notice over the past four years I feel and there is a different tenor.

我答案是肯定的，我想说,甚至我都能感受到过去四年里,学校氛围发生的变化。

普林斯顿公开课 - 人性课程节选

But I've been living in Berkeley for the past 4 years,

但是我过去四年都是在伯克利度过的，

为什么来伯克利？ - SpeakingMax英语口语达人

actually in Oakland for the past 4 years.

所以实际上过去四年是在奥克兰。

为什么来伯克利？ - SpeakingMax英语口语达人