B1 adjective Neutre

有效

[jou²¹⁴ ɕjɑʊ⁵¹]

Producing a desired or intended result; being in force or having legal power.

Exemples

3 sur 5
1

这封信在三十天内有效。

This letter is valid for thirty days.

2

我们需要寻找有效的沟通方式。

We need to find effective ways of communication.

3

政府采取了有效的措施控制物价。

The government took effective measures to control prices.

Famille de mots

Nom
有效性
Adverbe
有效地
Adjectif
有效
💡

Astuce mémo

Think of '有' (have) and '效' (effect) — 'having an effect'.

Quiz rapide

这个药对感冒很_______。

Correct !

La bonne réponse est : 有效

Exemples

1

这封信在三十天内有效。

formal

This letter is valid for thirty days.

2

我们需要寻找有效的沟通方式。

everyday

We need to find effective ways of communication.

3

政府采取了有效的措施控制物价。

business

The government took effective measures to control prices.

4

实验结果证明该药物是有效的。

academic

Experimental results proved that the drug is effective.

5

你的建议真的很有效,谢谢!

informal

Your suggestion was really effective, thanks!

Famille de mots

Nom
有效性
Adverbe
有效地
Adjectif
有效

Collocations courantes

有效措施 effective measures
有效期限 valid period
有效途径 effective way
有效控制 effective control
有效沟通 effective communication

Phrases Courantes

行之有效

effective in practice

长期有效

valid for a long time

依然有效

still valid

Souvent confondu avec

有效 vs 效率

'有效' (effective) refers to reaching a goal, whereas '效率' (efficient) refers to doing something without wasting time or energy.

📝

Notes d'usage

Commonly used in academic contexts to describe methods, solutions, or policies.

⚠️

Erreurs courantes

Don't confuse '有效' (effective) with '效率' (efficient).

💡

Astuce mémo

Think of '有' (have) and '效' (effect) — 'having an effect'.

📖

Origine du mot

From 'yǒu' (to have) and 'xiào' (effect/result).

Modèles grammaticaux

非常/十分 + 有效 对...有效

Quiz rapide

这个药对感冒很_______。

Correct !

La bonne réponse est : 有效

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