～前（～まえ）— ago; before
三日 前 に 来ました。
I came three days ago.
～前～まえ
ago; before
～まえ
accent [1]In detail
Words
三日mikkathree days
前maeago
にni(time marker)
来ましたkimashitacame (polite)
Kanji
前ゼン・
After a length of time, 前 can mean “ago”: 三日前 is “three days ago.” Here 三日 means three days, not the third day of a month.
Coco-sensei