字典
英语 - 简体中文
Necessary
ˈnɛsəˌsɛri
极其常见
500 - 600
500 - 600
词频和重要性指数显示一个词在特定语言中出现的频率。 数字越小,词语使用频率越高。 最常用的词通常在1到4000之间。 这个重要性指数帮助你在语言学习过程中集中于最有用的词语。

必要的, 必需的, 不可或缺的, 有必要的

Necessary 的含义在中文中

“必要”这个词在日常英语中使用广泛,通常表示某事物是不可或缺的,或者在特定情况下是必需的。它可以用于各种场合,包括正式和非正式的对话。

使用场合和例句

  1. 日常生活

    • “It is necessary to eat healthy food.”(吃健康食品是必要的。)
    • 这个句子在家庭或朋友之间的讨论中常见。
  2. 工作和学习

    • “It is necessary to submit the report by Friday.”(在星期五之前提交报告是必要的。)
    • 在职场或学术环境中使用,强调截止日期的重要性。
  3. 建议和请求

    • “If necessary, we can reschedule the meeting.”(如果有必要,我们可以重新安排会议。)
    • 用于讨论灵活性和选择。
  4. 法律和规则

    • “It is necessary to follow the regulations.”(遵守规定是必要的。)
    • 在正式场合,如法律文件或政策讨论中使用。

常见短语和表达

  • “necessary steps” (必要步骤)
  • “necessary precautions” (必要的预防措施)
  • “as necessary” (如有必要)

常见错误

  • 使用“necessary”时,常见错误是拼写错误,如拼写成“neccessary”。
  • 在某些情况下,学习者可能会将“necessary”与“important”混淆。尽管两者都有强调的意味,但“necessary”强调的是必需性,而“important”则强调重要性。

相关词汇

  • 同义词:essential(必不可少的),required(要求的),indispensable(不可或缺的)。
  • 反义词:unnecessary(不必要的),optional(可选择的)。

发音细节

“necessary”的发音为 /ˈnɛsəˌsɛri/。注意重音在第一个音节上。

语法和词源

“necessary”是一个形容词,源自拉丁语“necessarius”,意为“必需的”。在语法上,它通常用于修饰名词,表示某事物的必要性。

Necessary 的含义在中文中

必要的

例子:
It is necessary to wear a seatbelt while driving.
开车时系安全带是必要的。
She found it necessary to apologize for her mistake.
她觉得有必要为自己的错误道歉。
使用: formal语境: Used to express something that is essential or required.
笔记: This meaning is often used in formal writing and speech. It emphasizes the importance of compliance or obligation.

必需的

例子:
Water is necessary for life.
水是生命必需的。
It is necessary to have food to survive.
生存必需有食物。
使用: formal语境: Used when referring to basic needs or requirements.
笔记: This meaning highlights essential elements that are fundamental to existence or well-being.

不可或缺的

例子:
Trust is a necessary component of any relationship.
信任是任何关系中不可或缺的组成部分。
Education is necessary for personal development.
教育是个人发展的不可或缺的部分。
使用: formal语境: Used in contexts emphasizing something that cannot be omitted or replaced.
笔记: This meaning suggests that the absence of the item or concept would lead to a significant impact.

有必要的

例子:
It is necessary to check the equipment before use.
使用前有必要检查设备。
We believe it is necessary to address this issue immediately.
我们认为有必要立即解决这个问题。
使用: informal语境: Used in everyday conversation to indicate something that should be done.
笔记: This meaning is more casual and can be used in both spoken and written contexts.

Necessary的同义词

essential

Essential refers to something that is absolutely necessary or crucial for a particular purpose or outcome.
例子: Water is essential for life.
笔记: Essential emphasizes the importance and indispensability of something.

vital

Vital describes something that is extremely important or necessary for survival, success, or well-being.
例子: Sleep is vital for good health.
笔记: Vital conveys a sense of critical importance or necessity.

required

Required indicates that something is necessary or obligatory in a specific situation or context.
例子: A valid passport is required for international travel.
笔记: Required implies a mandate or obligation to have or do something.

indispensable

Indispensable means absolutely necessary or essential, without which a task or goal cannot be accomplished.
例子: Teamwork is indispensable for achieving our goals.
笔记: Indispensable stresses the idea of being so crucial that it cannot be dispensed with.

Necessary的表达方式,常用短语

Necessary evil

Something that is undesirable but must be accepted or tolerated because it is essential.
例子: Some people view paying taxes as a necessary evil.
笔记: The phrase 'necessary evil' implies that something is crucial or unavoidable despite being unpleasant, emphasizing a sense of obligation or inevitability.

Make something necessary

To cause something to become essential or required.
例子: Your procrastination has made a trip to the store necessary.
笔记: It signifies the action or event that leads to a situation where something becomes crucial or obligatory.

If necessary

Indicating that something may be needed or required under certain circumstances.
例子: You can call me if necessary to clarify any doubts.
笔记: It suggests a condition or circumstance where something might be needed, providing a conditional aspect to the necessity.

Absolutely necessary

Emphasizing that something is completely essential or indispensable.
例子: It is absolutely necessary to wear a seatbelt while driving.
笔记: It intensifies the importance of something being essential, leaving no room for doubt or alternative options.

Not necessary

Indicating that something is not essential or required.
例子: It's not necessary to bring your own laptop; we provide them for the workshop.
笔记: It explicitly states that something is not obligatory or crucial, offering a choice or alternative.

Necessary condition

A condition that must be fulfilled for a particular result or outcome to be achieved.
例子: Having a valid passport is a necessary condition for international travel.
笔记: It specifies a requirement or prerequisite that must be met for a specific purpose or goal.

Necessary的日常(俚语)表达

Necessity

Used to emphasize something that is essential or required.
例子: Coffee is a morning necessity for her.
笔记: Necessity is a more informal way to refer to something that is necessary.

Must-have

Something that is highly desirable or essential.
例子: This book is a must-have for anyone interested in history.
笔记: Must-have implies that the item is not just necessary but also very desirable.

Needful

Requiring to be done; necessary or essential.
例子: I've done all the needful to ensure the event runs smoothly.
笔记: Needful is a less common term for something that is needed or necessary.

Crucial

Of great importance; necessary.
例子: The final presentation is crucial for our chances of winning the contract.
笔记: Crucial highlights the critical nature of something, indicating its significance beyond just being necessary.

Key

Of paramount or crucial importance.
例子: Communication is key in any successful relationship.
笔记: Key implies that the item is pivotal or central, not just necessary.

Necessary - 例子

It is necessary to wear a helmet while riding a bike.
骑自行车时佩戴头盔是必要的
Water is an essential and indispensable element for life.
水是生命中必不可少的重要元素。
The company deemed it necessary to invest in new technology.
公司认为投资新技术是必要的

Necessary的语法

Necessary - 形容词 (Adjective) / 形容词 (Adjective)
词元: necessary
变位
形容词 (Adjective): necessary
名词,复数 (Noun, plural): necessaries
名词,单数或不可数 (Noun, singular or mass): necessary
音节、划分和重音
necessary 包含3个音节: nec • es • sary
音标: ˈne-sə-ˌser-ē
nec es sary , ˈne ˌser ē (红色音节是重读的)

Necessary - 重要性和使用频率

词频和重要性指数显示一个词在特定语言中出现的频率。 数字越小,词语使用频率越高。 最常用的词通常在1到4000之间。
necessary: 500 - 600 (极其常见).
这个重要性指数帮助你在语言学习过程中集中于最有用的词语。
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