開ける

1. Origins, structure, and basic meaning

• Structure: 開ける is read as あける and means opening something that is closed.
• Basic usage: It can appear in a request for permission to open a window or describe what is found after opening a box.

2. Common pitfalls and similar expressions

• Asking permission to open something
  • 窓を開けてもいい asks whether it is acceptable to open the window because it is hot. Example: 暑いので窓を開けてもいいですか。
• Discovering what is inside
  • 箱を開けると introduces what was inside when the box was opened. Example: 箱を開けると中に古い手紙が入っていました。