B1 adjective Neutro

有效

[jou²¹⁴ ɕjɑʊ⁵¹]

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

Exemplos

3 de 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.

Família de palavras

Substantivo
有效性
Advérbio
有效地
Adjetivo
有效
💡

Dica de memorização

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

Quiz rápido

这个药对感冒很_______。

Correto!

A resposta correta é: 有效

Exemplos

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!

Família de palavras

Substantivo
有效性
Advérbio
有效地
Adjetivo
有效

Colocações comuns

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

Frases Comuns

行之有效

effective in practice

长期有效

valid for a long time

依然有效

still valid

Frequentemente confundido com

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.

📝

Notas de uso

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

⚠️

Erros comuns

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

💡

Dica de memorização

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

📖

Origem da palavra

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

Padrões gramaticais

非常/十分 + 有效 对...有效

Quiz rápido

这个药对感冒很_______。

Correto!

A resposta correta é: 有效

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