I was born _ the year of 1980. A.in B. on C.at 选哪一个？麻烦解释详细点，谢谢！

选 A in

指年和月时，用介词 in
In 与月份，季节，年份及一天的某些时间段连用。
He was born in 2007.
He made his first song in July.
I get up early in the morning.

指日期时，用on
On与天、日期和节日连用
He was born on January 8th (the 8th of Jan.).
Their wedding anniversary is on 25th May.
on Mother's Day

指时间时，用at
He arrived at the meeting at 10:30am.
We met in a restaurant at 6 o'clock in the evening.
at night/midnight/lunchtime
at the age of ...

A 在表示年份的时间前都用介词in

祝你学习进步，更上一层楼！ (*^__^*)
不明白的再问哟，请及时采纳，多谢！

in,年份、季节、月份用in
in the year of 1980=in 1980

in，year 前一般都是in。at time，一般很准确。

in the year of 固定搭配