Meaning
This pattern is used to express a conscious decision or firm resolution to perform an action. It conveys the speaker's determination and commitment. To decide NOT to do something, use the negative form: verb (ない form) + ないことにします. The structure treats the infinitive verb phrase as a noun object of the verb する.
Formation
| Part of speech | Formation |
|---|---|
| 动词 | 動詞辞書形 + ことにします |
| 动词 | 動詞（ない形）ない + ことにします |
Examples
-
私は 卒業したら、帰国することに しました。
I decided that after graduation, I will return to my home country. -
風邪が ひどいので、スキーに 行かないことに しました。
Because I have a severe cold, I decided not to go skiing. -
仕事後に、必ず 2キロ 歩くことに しました。
I decided that I will definitely walk 2 kilometers after work.
Summary
- Express a firm personal decision or resolution with strong determination
- Use negative form (ない + ことにします) to decide against doing something
- The verb phrase acts as a noun, making it an application of the (noun + に + します) pattern