词典
英语
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。
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。
Necessary -
Absolutely necessary; essential; required
例子: It is necessary to wear a seatbelt while driving.
使用: formal语境: professional settings, academic writing
笔记: This is the most common meaning of 'necessary' and indicates something that must be done or used.
Inevitable; bound to happen
例子: Mistakes are a necessary part of the learning process.
使用: formal/informal语境: education, personal development
笔记: This meaning suggests that something is a natural or unavoidable part of a process or situation.
Done out of need; required by the circumstances
例子: She took the necessary steps to ensure the project's success.
使用: formal语境: business, procedures
笔记: In this sense, 'necessary' implies actions taken to achieve a specific goal or outcome.
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.
Water is an essential and indispensable element for life.
The company deemed it necessary to invest in new technology.
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 sə 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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