Noun
きょねん
去年の四月に日本にきました。
I came to Japan in April of last year.
去年、はじめて夏コミにさんせんしました。
Last year, I participated in the Summer Comiket for the first time.
彼はハンバーガーを毎日食べるので、去年よりも太ってしまった。
He is fatter than he was last year because he eats hamburgers every day.
The past year is just last year.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.