decrease什么意思

decrease什么意思

一、核心释义

"decrease"这个单词,相信对于经常接触英语的读者来说并不陌生。它指的是数量或程度的减少,简单来说,就是“减少”的意思。在英语写作和口语中,正确理解和运用这个词汇,能够使表达更加精准和地道。

二、用法详解

  1. 数量减少

"decrease"最直接的用法就是表示数量的减少。例如:

  • The population of the city has decreased over the past few years.(这个城市的人口在过去几年里有所减少。)
  1. 程度降低

除了表示数量的减少,"decrease"还可以用来表示程度的降低。例如:

  • The temperature began to decrease as the sun set.(随着太阳落山,气温开始降低。)
  1. 动词变位

"decrease"的动词变位比较简单,其现在分词为"decreasing",过去式和过去分词均为"decreased"。例如:

  • The sales of the product are decreasing.(该产品的销量正在下降。)

  • The number of students in the class decreased last semester.(上学期班级的学生人数减少了。)

三、常用搭配

  1. decrease by

"decrease by"表示减少了多少。例如:

  • The population of the city decreased by 10% in the past year.(过去一年,这个城市的人口减少了10%。)
  1. decrease to

"decrease to"表示减少到多少。例如:

  • The price of the product has decreased to $50.(该产品的价格已经降至50美元。)
  1. decrease from

"decrease from"表示从多少减少到多少。例如:

  • The company's revenue decreased from $1 million to $500,000.(公司的收入从100万美元减少到50万美元。)

四、例句展示

  1. The company's profits have decreased by 20% this year.(公司今年的利润下降了20%。)

  2. The temperature is decreasing rapidly.(气温正在迅速下降。)

  3. The population of the city has decreased to 500,000.(这个城市的人口已经减少到50万人。)

  4. The price of the product has decreased from $100 to $80.(该产品的价格已经从100美元降至80美元。)

五、QA问答

Q:如何区分"decrease"和"reduce"?

A:"decrease"和"reduce"都表示减少,但"decrease"更侧重于数量的减少,而"reduce"则更侧重于程度的降低。例如,可以说"The population decreased",但通常不会说"The population reduced"。

Q:"decrease"和"lessen"有什么区别?

A:"decrease"和"lessen"都表示减少,但"decrease"强调数量的减少,而"lessen"则强调程度的降低。例如,可以说"The number of students decreased",但通常不会说"The number of students lessen"。

Q:"decrease"可以用在哪些语境中?

A:"decrease"可以用在描述人口、价格、温度、收入等数量或程度减少的语境中。