A1 noun 中性

効果

/koːka/

The result or impact produced by an action, treatment, or cause. It is used to describe how well something works or the specific outcome achieved through effort or influence.

例句

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1

この薬はすぐに効果が出ます。

This medicine takes effect quickly.

2

新政策の経済的効果を検討する必要があります。

We need to examine the economic effects of the new policy.

3

この筋トレ、効果あると思う?

Do you think this workout is effective?

词族

名词
効果
副词
効果的に
形容词
効果的
相关
有効性
💡

记忆技巧

Think of a 'Coca-Cola' (Kouka) commercial; the 'effect' of drinking it is supposed to be instant happiness and refreshment.

快速测验

毎日の練習は、ピアノの上達に大きな___があります。

正确!

正确答案是: 効果

例句

1

この薬はすぐに効果が出ます。

everyday

This medicine takes effect quickly.

2

新政策の経済的効果を検討する必要があります。

formal

We need to examine the economic effects of the new policy.

3

この筋トレ、効果あると思う?

informal

Do you think this workout is effective?

4

実験により、その成分の抗酸化効果が証明された。

academic

The experiment proved the antioxidant effect of the component.

5

先月の広告はあまり効果がありませんでした。

business

Last month's advertisement wasn't very effective.

词族

名词
効果
副词
効果的に
形容词
効果的
相关
有効性

常见搭配

効果がある to be effective
効果が出る to show results
効果を試す to test the effectiveness
高い効果 high effectiveness
相乗効果 synergy / synergistic effect

常用短语

効果絶大

extremely effective

音響効果

sound effects

心理的効果

psychological effect

容易混淆的词

効果 vs 結果

'Kekka' is a general result (can be good or bad), while 'Kouka' focuses on the effectiveness or intended influence of an action.

効果 vs 効率

'Kouritsu' refers to efficiency (speed/resource usage), whereas 'Kouka' refers to effectiveness (the power to produce a result).

📝

使用说明

Kouka is most commonly paired with the verbs 'aru' (to have) or 'deru' (to appear/show). It is used for positive or intended outcomes, except in the phrase 'gyaku-kouka' (backfire).

⚠️

常见错误

Learners often forget that 'kouka' is a noun and try to use it as a verb without 'ga aru' or 'wo motarasu'. Do not say 'kouka suru' to mean 'to be effective'.

💡

记忆技巧

Think of a 'Coca-Cola' (Kouka) commercial; the 'effect' of drinking it is supposed to be instant happiness and refreshment.

📖

词源

Derived from Sinitic roots: 'kou' (効) meaning efficacy or result, and 'ka' (果) meaning fruit or consequence.

语法模式

~に効果がある (effective for/on ~) ~の効果で (due to the effect of ~) 効果的な + Noun (effective ~)
🌍

文化背景

In Japanese marketing, especially for cosmetics and supplements, the word 'kouka' is strictly regulated by the Pharmaceutical Affairs Act regarding what claims can be made.

快速测验

毎日の練習は、ピアノの上達に大きな___があります。

正确!

正确答案是: 効果

更多general词汇

無駄

A1

Refers to something that is wasteful, useless, or futile. It describes actions, efforts, or resources that do not produce a useful result or are unnecessary.

進歩

A1

Progress or improvement, specifically describing a forward movement in skills, technology, or society. It refers to the process of becoming more advanced, effective, or better over time.

類似

A1

Ruiji refers to the state where two or more things resemble each other in appearance, nature, or quality. It is a formal way to describe similarities or common traits between objects or ideas.

実践

A1

The act of putting a theory, idea, or plan into actual practice or action. It emphasizes the movement from abstract thought or knowledge to real-world application.

利用

A1

The act of using a service, facility, or resource effectively to achieve a specific purpose. It often implies making good use of something or taking advantage of a system provided to the public.

使用

A1

The act of employing or utilizing an object, tool, or facility for a specific purpose. It is a formal or neutral term commonly found in instructions, public signs, and professional documentation.

内容

A1

The substance, essence, or specific details contained within something such as a book, speech, or document. It refers to what a subject consists of rather than its outward appearance or form.

異常

A1

A word used to describe something that deviates from the normal state, standard, or expected pattern. It often implies a problem, malfunction, or an extraordinary occurrence that requires attention or investigation.

状態

A1

Refers to the current condition, status, or appearance of a person, object, or situation. It describes how something is at a specific moment in time.

場合

A1

The word 'baai' refers to a specific situation, case, or circumstance. It is frequently used as a noun to set a condition, similar to saying 'in the event of' or 'if' in English.

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