前年的英文：
the year before last

参考例句：

His grandfather died the year before last.
他爷爷是前年去世的。

Yes, that's right. That was the year before last year.
是的，对。那时前年的事情了。

These disturbances were different in nature from those of September 18, 1985, when students also took to the streets.
这次闹事的性质同前年“九一八”时学生上街不同。

year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

before是什么意思：
prep. 在…之前；优于，先于；当面
conj. 在…之前
adv. 先前，从前

Rain before seven;fine before eleven
雨过天晴

They corned their horses before the journey.
他们在启程前用玉米喂马。

The army was arrayed before the commander.
部队在指挥官前列好阵势。

see before you go
三思而行

Bind the sack before it be full
做事应适可而止