decrease

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数据源: ai_enrichment
decrease 指数量、程度或强度的减少,可作为名词表示减少量,或动词表示使减少。

用法要点

句型搭配

作为动词时,常用句型为 decrease + (by/in) + 数量或百分比,表示减少的具体幅度;作为名词时,常与介词 in 连用,表示在某个方面的减少。

• decrease by 10%
• decrease in sales
• a sharp decrease

介词用法

动词 decrease 后可接介词 by 表示减少的绝对量,接 in 表示减少的领域或方面;名词 decrease 通常与 in 搭配,表示减少的对象。

• decrease by 5 units
• decrease in temperature
• a decrease in demand

语域说明

decrease 在正式和学术语境中更常见,强调客观的减少过程;在非正式口语中,有时可用 drop 或 go down 替代,但 decrease 更精确。

• The population decreased.
• Prices decreased slightly.

基础例句

The temperature decreased overnight, so I wore a jacket.

夜间气温下降了,所以我穿了件夹克。

We need to decrease our spending to save money.

我们需要减少开支来省钱。

There was a decrease in traffic after the holiday.

假期后交通量有所减少。

Her stress levels decreased after taking a break.

休息后她的压力水平降低了。

高级例句

The study shows a significant decrease in carbon emissions over the past decade.

研究表明过去十年碳排放量显著减少。

To optimize profits, the company plans to decrease production costs by 15%.

为了优化利润,公司计划将生产成本降低15%。

Economic policies led to a gradual decrease in inflation rates.

经济政策导致通货膨胀率逐渐下降。

The report indicates a steady decrease in customer satisfaction due to service issues.

报告显示由于服务问题,客户满意度持续下降。

高频搭配

verb

gradually decreasesignificantly decreaserapidly decreasesteadily decreasedramatically decrease

adjective

sharp decreasegradual decreasesignificant decreaseslight decreasesteady decrease

noun

decrease in populationdecrease in pricedecrease in speeddecrease in qualitydecrease in temperature

adverb

decrease slowlydecrease quicklydecrease steadilydecrease slightlydecrease markedly

preposition

decrease bydecrease indecrease todecrease fromdecrease over time

phrase

on the decreasea decrease ofshow a decreaselead to a decreaseresult in a decrease

常见错误

❌ 错误:The number of students decrease last year.
✓ 正确:The number of students decreased last year.

错误在于动词时态不一致,应使用过去式 decreased 以匹配时间状语 last year。

❌ 错误:There is a decrease on sales.
✓ 正确:There is a decrease in sales.

错误在于介词使用不当,名词 decrease 通常与 in 搭配表示减少的方面,而不是 on。

近义词辨析

reduce

reduce 更强调主动采取措施使某物减少,常用于人为干预的语境;decrease 更中性,可指自然或客观的减少。

We need to reduce waste to protect the environment. (主动减少) vs. The population decreased due to migration. (客观减少)

decline

decline 常指数量、质量或价值的逐渐下降,带有消极或衰退的意味;decrease 更通用,可指任何类型的减少。

The company's profits declined over the quarter. (暗示衰退) vs. The noise decreased after midnight. (中性减少)