Japanese JLPT Grammar Point
~かねない (〜kane nai)

~かねない (〜kane nai)

Short explanation:

Express the likelihood of a negative outcome or consequence.

Formation:

Verb-stem + かねない

Examples:

彼はそんなに無責任だから、約束を守れかねない。
Kare wa sonna ni musekinin dakara, yakusoku wo mamore kane nai.
He is so irresponsible that he might not keep his promise.
注意しないと、事故を起こしかねない。
Chuui shinai to, jiko wo okoshi kane nai.
If you don't pay attention, you might cause an accident.
このアプリはバグが多いので、正常に動作しかねない。
Kono apuri wa bug ga ooi node, seijou ni dousa shi kane nai.
This app has many bugs, so it might not work properly.
彼女は緊張しているので、うまく話しかねない。
Kanojo wa kinchou shiteiru node, umaku hanashi kane nai.
She is nervous, so she might not be able to speak well.

Long explanation:

The ~かねない grammar point is used to express the possibility or likelihood of a negative outcome or consequence, often used when there is concern about the result. It is typically used with verbs and can be understood as 'might' or 'cannot guarantee'.

Detailed Grammar notes:

Processing keyword: ~かねない (〜kane nai)

Japanese Grammar Point: ~かねない (〜kane nai)

~かねない (〜kane nai)

1. Introduction

In this lesson, we'll explore the Japanese grammar point ~かねない (〜kane nai). This expression is used to indicate that there is a possibility of something negative or undesirable occurring. Understanding how to use ~かねない will help you express potential negative outcomes or concerns in various contexts.


2. Core Grammar Explanation

Meaning

~かねない translates to "might (result in)", "could happen", or "there is a possibility that" something negative may occur. It is used to warn or express concern about a potential undesirable outcome.

Structure

The structure for using ~かねない is:

Verb Stem + かねない

Formation Diagram

Verb Form + かねない Resulting Form
読み (from 読む) かねない 読みかねない
起こし (from 起こす) かねない 起こしかねない
なり (from なる) かねない なりかねない

Detailed Explanation

  • Verb Stem: The verb stem is obtained by removing the -ます from the -ます form of the verb.
    • Example: 食べます食べ (stem)
  • ~かねない attaches directly to the verb stem.
  • The expression is used to indicate a potential negative outcome that is considered possible under the circumstances.

Visual Aid: Usage Flowchart

graph LR
A[Verb Stem] --> B[+ かねない] --> C[Potential Negative Outcome]

3. Comparative Analysis

~かねる vs. ~かねない

  • ~かねる: Means "cannot do" or "hard to do", expressing inability or reluctance.
    • Example: ご期待には応じかねます。 (I cannot comply with your request.)
  • ~かねない: Means "might happen", especially a negative event.
    • Example: 彼は秘密を漏らしかねない。 (He might leak the secret.) Difference: While ~かねる expresses an inability or refusal, ~かねない expresses a possibility of something (usually negative) happening.

4. Examples in Context

Example Sentences

  1. 彼の言い方は誤解を招きかねない。
    • Kare no iikata wa gokai o maneki kane nai.
    • His way of speaking might cause misunderstandings.
  2. そんな無責任な態度では、問題が起こりかねない。
    • Sonna musekinin na taido de wa, mondai ga okori kane nai.
    • With such an irresponsible attitude, problems might arise.
  3. このまま雨が降り続けば、川が氾濫しかねない。
    • Kono mama ame ga furitsudzukeba, kawa ga hanran shi kane nai.
    • If the rain continues like this, the river might flood.
  4. あまりお酒を飲むと健康を害しかねない。
    • Amari osake o nomu to kenkō o gaishi kane nai.
    • Drinking too much alcohol might harm your health.
  5. 彼女は怒りを抑えきれず、言い過ぎてしまいかねない。
    • Kanojo wa ikari o osae kirezu, iisugite shimai kane nai.
    • Unable to suppress her anger, she might end up saying too much.

5. Cultural Notes

Levels of Politeness and Formality

  • ~かねない is a neutral expression and can be used in both formal and informal contexts.
  • Often used in written language, news reports, or formal statements to warn about potential risks.

Idiomatic Expressions

  • 死にかねない: Might die.
    • Used to emphasize the seriousness of a situation.
  • 忘れかねない: Might forget.
    • Used to express concern over forgetting something important.

6. Common Mistakes and Tips

Error Analysis

  • Mistake: Using the plain dictionary form of the verb instead of the verb stem.
    • Incorrect: 食べるかねない
    • Correct: 食べかねない
  • Mistake: Confusing ~かねない with ~かもしれない (might, may).
    • While both express possibility, ~かねない often implies a negative outcome and is more certain.

Learning Strategies

  • Mnemonic Device: Think of ~かねない as "can't help but (negative consequence)".
  • Association: Associate かねない with "金" (money) and think "If I spend too much, I might run out of money (negative outcome)."

7. Summary and Review

Key Takeaways

  • ~かねない is used to express a potential negative outcome.
  • Formed by attaching かねない to the verb stem.
  • Implies that under certain conditions, something undesirable might happen.
  • Different from ~かもしれない as it often conveys a stronger sense of negativity.

Quick Recap Quiz

  1. How do you form ~かねない with the verb 書く?
    • Answer: 書きかねない
  2. What is the main nuance of ~かねない?
    • Answer: It expresses that there is a possibility of a negative or undesirable outcome happening.
  3. Translate the sentence: そんなことを言うと、彼を怒らせかねない。
    • Answer: If you say something like that, you might make him angry.

By mastering ~かねない, you can effectively express concerns about potential negative consequences in Japanese, enhancing both your spoken and written communication skills.

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