〜の・んです

to be...; the matter of...; ...'s

1. Overview

The structure "〜の" or "〜んです" is commonly used in Japanese to explain or provide background information about something. It often carries an emphasis or explanatory tone, particularly in spoken language.

2. Structure

• Grammar Structure:

  • Noun + の
  • Verb (dictionary form) + の
  • い-Adjective (dictionary form) + の
  • な-Adjective (dictionary form) + の
  • Verb (dictionary form) + んです
  • い-Adjective (dictionary form) + んです
  • な-Adjective (dictionary form) + なんです

• Explanation: This structure is commonly used to explain reasons, provide additional information, or express feelings.

3. Usage Explanation

• Connection: It can connect nouns, verbs, adjectives with other sentences.

• Translation: Generally translated as "to be...," "the matter of...," or "...'s."

4. Example Sentences

1. これは私の本なんです。
   This is my book.

2. 彼は学生なんです。
   He is a student.

3. 明日、友達が来るんです。
   My friend is coming tomorrow.

4. どうして来なかったの？
   Why didn't you come?

5. 彼女はとても優しいの。
   She is very kind.

5. Alternative Grammar

• 〜から: Used to indicate a reason or cause.
  • Example: 彼は忙しいから、来られません。
    He can't come because he is busy.

6. Related Grammar

• 〜ために: Indicates purpose or reason.
  • Example: 勉強するために、毎日図書館に行きます。
    I go to the library every day to study.

7. Notes

• Context: "〜の" or "〜んです" is commonly used in everyday conversation and has a friendly tone.

• Tone: This expression often carries an explanatory tone, emphasizing the reason or background information.

8. Summary

The "〜の" or "〜んです" structure is a way to explain, clarify, or provide background information. It is widely used in daily conversation, helping speakers to convey their intentions and feelings more clearly.