B1 noun Neutral

效率

/ɕjaʊ̯˥˩ ly˥˩/

The state or quality of being efficient; the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.

Examples

3 of 5
1

我早上的工作效率最高。

My work efficiency is highest in the morning.

2

政府需要提高行政效率。

The government needs to improve administrative efficiency.

3

这么做太没效率了。

Doing it this way is so inefficient.

Word Family

Noun
效率
Adverb
高效地
Adjective
高效的
💡

Memory Tip

效 (effect) + 率 (rate). The rate of effect.

Quick Quiz

为了提高学习___,他制定了详细的计划。

Correct!

The correct answer is: 效率

Examples

1

我早上的工作效率最高。

everyday

My work efficiency is highest in the morning.

2

政府需要提高行政效率。

formal

The government needs to improve administrative efficiency.

3

这么做太没效率了。

informal

Doing it this way is so inefficient.

4

研究旨在探讨提高能源效率的方法。

academic

The research aims to explore methods for improving energy efficiency.

5

提高效率是降低成本的关键。

business

Improving efficiency is key to reducing costs.

Word Family

Noun
效率
Adverb
高效地
Adjective
高效的

Common Collocations

提高效率 to improve efficiency
工作效率 work efficiency
能源效率 energy efficiency
高效率 high efficiency
学习效率 learning efficiency

Common Phrases

效率第一

efficiency first

事半功倍

half the effort, twice the result (efficient)

办事效率

efficiency in handling affairs

Often Confused With

效率 vs 效益

效率 is speed/ratio of work; 效益 is the benefit or profit gained from an activity.

📝

Usage Notes

Very important for IELTS topics like technology, work-life balance, and management.

⚠️

Common Mistakes

Don't confuse with '速率' (sùlǜ), which usually refers to physical speed.

💡

Memory Tip

效 (effect) + 率 (rate). The rate of effect.

📖

Word Origin

效 (effect/result) + 率 (rate/ratio).

Grammar Patterns

提高/降低 + 效率 高/低 + 效率

Quick Quiz

为了提高学习___,他制定了详细的计划。

Correct!

The correct answer is: 效率

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