Meaning
Names an action that is necessary; the negative form removes that necessity.
Formation
- Dictionary form + 必要がある: 申し込む必要があります
- Negative: 必要はありません
When to use it
- Core use
- There is a need to do it
Example
明日までに申し込む必要があります
You need to apply by tomorrow.
Important notes
- Pay attention to the word form before the construction and to the particles around it.
Common mistakes
- Do not translate the pattern word for word; first identify its function in the whole situation.