動作の主体（主語）で 動詞

Meaning

This pattern uses the structure [quantity/group] + で + [verb] to indicate how many people or which group performs an action together. The で particle marks the agent or subject when preceded by a number counter or group noun. It shows the basis or scope of the action being performed.

Formation

Examples

1. ３人で 一つの 部屋に 泊まります。
   Three people stay in one room.

2. ２人で 昼ごはんを 一緒に 食べに 行きましょう。
   Let's go eat lunch together, just the two of us.

3. クラスで 京都へ 行きます。
   The whole class goes to Kyoto.

Summary

• で marks the agent/subject when preceded by a quantity or group noun
• Used to show how many people or which group performs an action collectively
• Common with number counters (３人で, ２人で) or group nouns (クラスで, 家族で)