〜んじゃない

Isn't it...?；Isn't that so?

1. Overview

「〜んじゃない」is a colloquial expression in Japanese used to question, confirm, or refute a point. It can convey a slight denial or doubt, often used in conversations with others.

2. Structure

• Grammar Structure:

  • Verb (dictionary form) + んじゃない
  • i-adjective (dictionary form) + んじゃない
  • na-adjective + じゃない
  • Noun + じゃない

• Explanation: This structure is used to express opposition or doubt regarding a certain matter, often carrying a tone of dissatisfaction or curiosity.

3. Usage Explanation

• Connection: 「んじゃない」is commonly used in spoken language to express doubt about a fact or to expect some explanation.

• Meaning: It is generally translated as "Isn't it...?" or "Isn't that so?".

4. Example Sentences

1. 彼はまだ来てないんじゃない？
   Isn't he still not here?

2. この映画は面白いんじゃないか？
   Isn't this movie interesting?

3. 彼女は学生じゃないんじゃない？
   Isn't she a student?

4. それは違うんじゃない？
   Isn't that wrong?

5. 君も行くんじゃないの？
   Aren't you going too?

5. Alternative Grammar

• 〜じゃないか: Similar to「〜んじゃない」but slightly stronger in tone.
  • Example: 君は忙しいじゃないか？
    Aren't you busy?

6. Related Grammar

• 〜ではない: A more formal expression, typically used in written language.
  • Example: 彼は先生ではない。
    He is not a teacher.

7. Points to Note

• Context: 「〜んじゃない」is often used in spoken language and is suitable for casual conversations.

• Tone: This expression usually carries a friendly or dissatisfied tone, so be mindful of the context and tone when using it.

8. Summary

「〜んじゃない」is a commonly used expression in spoken language to question, confirm, or refute something. It adds interactivity to conversations and is applicable in various contexts.