1
reduce sth
常用于及物，直接接名词宾语。
We need to reduce our expenses.
我们需要减少开支。
减少；降低
reduces — third person singular of reduce
先理解核心含义，再看它在真实句子里的用法。
减少；降低
cut down on; make a reduction in
We need to reduce our expenses.
我们需要减少开支。
降低某物的大小、数量、质量、价值或强度；减少,降低。
To bring down the size, quantity, quality, value or intensity of something; to diminish, to lower.
减轻体重。
To lose weight.
降级；贬低,降职。
To bring to an inferior rank; to degrade, to demote.
使谦卑；征服；制服；捕获。
To humble; to conquer; to subdue; to capture.
reduce
Base
原形
reduces
3rd person
第三人称单数
reducing
-ing
现在分词
reduced
Past
过去式
reduced
Past participle
过去分词
I reduce my sugar intake.
我减少糖的摄入。
She reduced the price yesterday.
她昨天降低了价格。
They have reduced waste significantly.
他们已大幅减少浪费。
规则动词，过去式和过去分词加-ed。
We need to reduce our energy consumption at home.
我们需要减少家里的能源消耗。
The new law reduces the use of plastic bags in supermarkets.
新法律减少了超市塑料袋的使用。
She has reduced her coffee intake to two cups a day.
她已将每天喝咖啡的量减少到两杯。
常用于及物，直接接名词宾语。
We need to reduce our expenses.
我们需要减少开支。
表示使变成更糟糕的状态。
The fire reduced the house to ashes.
大火把房子化为灰烬。
表示减少的具体幅度。
The company reduced its workforce by 20%.
公司裁员20%。
Not this
We should reduce on the expenses.
Use this
We should reduce the expenses.
Reduce 是及物动词，直接跟宾语，不需要介词 on。
Not this
The number of students reduced this year.
Use this
The number of students decreased this year.
表示数量减少时，通常用 decrease 作不及物动词，而 reduce 作及物动词更常见。这里需要不及物动词，所以用 decreased。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
降低成本
The company is trying to reduce costs by improving efficiency.
公司正试图通过提高效率来降低成本。
减少浪费
We should reduce waste to protect the environment.
我们应该减少浪费以保护环境。
降低风险
Diversification can help reduce risk in investment.
多元化可以帮助降低投资风险。
减少排放
Many countries are working to reduce carbon emissions.
许多国家正在努力减少碳排放。
减轻压力
Listening to music can help reduce stress.
听音乐有助于减轻压力。
减少……的数量
She decided to reduce the amount of sugar in her diet.
她决定减少饮食中的糖分。
使哭泣
The harsh criticism reduced her to tears.
严厉的批评使她流泪了。
化为灰烬
The entire building was reduced to ashes in the fire.
整栋建筑在大火中化为灰烬。
使沉默
His stern look reduced the children to silence.
他严厉的表情使孩子们安静下来。
减少，再利用，再循环。
We must reduce waste to protect the environment.
我们必须减少浪费以保护环境。
Use reduces naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想“re”表示“再”，“duce”发音像“丢死”，再丢死东西就减少了。
reduce 作“减少”含义时，为中性词，广泛用于日常对话、书面语及正式场合，常搭配表示数量或程度的名词，语气自然通用。
All listed words share the '-duce' ending and rhyme with 'reduce'.
Dictionary facts from ECDICT, WIKTIONARY.