年前的英文：
...years ago

参考例句：

Preadult anxieties;the preadult morph.
成年前的忧虑；成年前的形态

She first moved into the intelligence services 22 years ago.
22年前她初次进入情报部门。

I gained an MBA from Tsinghua University seven years ago.
7年前我从清华大学毕业获MBA学位。

I graduated from Zhongshan University, with a Master’s degree of economics six years ago.
六年前我毕业于中山大学,并获得了经济学硕士学位。

Yet the Bush administration claims it can halve the budget deficit by 2009.
不过，布什政府宣称有能力在2009年前将财政赤字减半。

All this was known thirty-five years ago; the great advances since then have come in the observational domain
所有这些，在三十五年前就已经知道了，以后的重大进展则是在观测方面。

Not quite two years ago, oil was $10 a barrel and the cartel was on the brink of collapse
不到两年前，石油价格为10美元一桶，敬佩克还面临崩溃的边缘。

I still find a comment by Prime Minister in one of his speeches about one or two years ago rather heart-warming
大概是一、二年前，吴作栋总理讲了一句话，我至今还感到温暖。

Years ago, in a small fishing village in Holland, a young boy taught the world about the rewards of unselfish service.
很多年前，在荷兰的一个小渔村里，一个年轻人教给世人一个无私奉献换得丰盛酬报的道理。

But its operating profit fell to132 million euros ($155 million) from 175 million euros ($206 million) a year ago
但是经营所得的利润从一年前的17500万欧元(合计20600万美元)降到了13200万欧元(合计15500万美元)。

years是什么意思：
n. 年；学年，年度；年级学生；年龄；时期；很久；一年时间

Year succeeds to year.
年复一年。

This year is a banner year for crops.
今年是个丰年。

Year after year went past.
一年又一年过去了。

Lasting or active through the year or through many years.
常绿的全年或多年都充满生机

"A snow year, a rich year"
瑞雪兆丰年

ago是什么意思：
adv. 以前，以往
adj. 以前的，过去的

That was a great while ago.
那是很久以前的事了。

Hunters peopled these forests long ago.
猎人们很久以前就住在这片森林里。

The spring dried up long ago.
这泉水早就干涸了。

She was here just a moment ago.
她方才还在这儿。

The mine was worked out long ago.
那个矿早就采完了。