entries → 過去
TSUMUGU · TOCFL 2 (est.) · 詞
過去 word · TOCFL 2 (est.)
過去 ＝ 過 ＋ 去
ㄍㄨㄛˋ ㄑㄩˋ · guòqù
noun — the past; adverb — previously; formerly; verb — to pass over; to go across

字源 FORM — what the parts do

過to pass through; to cross (經過的過)guò
去to go; to leave (去掉的去)qù
過去，經過的過，去掉的去。

故事 STORY — a scene to remember it by

走過去（過）、不回來了（去）——那就是過去了。
Pass through (過) and go (去) — what has crossed and left does not return. That is the past.
記憶法
關 · Related
以前yǐqiánformerly — the adverbial synonym for the past未來wèiláithe future — the contrast that makes 過去 clear