N421/160
に（回数）
日・週・月・年に + 回日・週・月・年に + 度
Meanings
- Times per period
- Per X time
- Frequency of occurrence
About this pattern
Explanation
This grammar shows how often something happens within a fixed time period. The particle に marks the time frame, and the following counter (like 回 or 度) indicates the frequency within that frame. It is commonly used to talk about routines, habits, or regular events. Use with time expressions such as 一日, 一週間, 一か月, 一年, etc.