過去

1. Origins, structure, and basic meaning

• Structure: 過去, read かこ, is a time noun for the past or events before the present.
• Basic usage: 過去の失敗 modifies earlier failures, while 過去に経験した locates experiences in the past.

2. Common pitfalls and similar expressions

• The past as a time domain
  • 過去 covers time before the present and events belonging to it. It can refer not only to a finished period but also to earlier experience that still informs the present.