necessary
gb/nˈɛsɪsˌɛɹi/ us/nˈɛsɪsˌɛɹi/
A2
英语
~ 600
义项
0 个义项
adjective
A2
property
1
Essential or needed
Something you must have or do; very important and needed.
用法模式：
it is necessary to [verb]
常见错误：
Learners sometimes confuse 'necessary' with 'needed'. While similar, 'necessary' often sounds more formal and is used in fixed expressions like 'it is necessary to...'.
近义词
essential (Strongly emphasizes that something is absolutely needed.)
|
required (Often used in official or formal contexts to mean needed by rules or conditions.)
反义词
unnecessary (Describes something not needed at all.)
|
optional (Implies a choice rather than a requirement.)
搭配
absolutely necessary
|make it necessary
|necessary steps
|necessary changes
主题
daily life
|planning
|rules
|core_vocabulary
例句
- It is necessary to wear a helmet when riding a motorcycle.
- Good communication is necessary for a healthy relationship.
- The repairs were necessary after the storm caused damage.
学习者例句
- It is necessary to drink water every day.
- A passport is necessary to travel abroad.
- It is necessary to study before a test.
名词
formal
B1
entity
2
An essential thing or condition
Something you must have or cannot live without.
常见错误：
Some learners confuse 'necessity' with 'necessary'. The former is a noun, the latter an adjective.
近义词
requirement (Often used in formal or technical contexts for something that must be met.)
|
essential (Focuses on something very important to have.)
反义词
luxury (Something not needed, but nice to have.)
搭配
basic necessities
|the bare necessities
|necessities of life
主题
daily life
|needs
|core_vocabulary
例句
- Shelter, food, and water are basic necessities of life.
- He packed only the bare necessities for the trip.
- Access to the internet has become a modern necessity.
学习者例句
- Food and water are necessities.
- Shelter is a necessity for everyone.
- Clothes are a necessity in cold weather.
语法
词典原形
necessary
IPA
GB/nˈɛsɪsˌɛɹi/
US/nˈɛsɪsˌɛɹi/
音节与重音
ne - ces - sary （3 个音节）
Stress on 1st syllable (ne)
词形变化
Adjective
- Base: necessary
Noun
- Base: necessary
- Plural: necessaries
词族
Forms
necessaries
noun
Core family
necessity
noun B1
necessarily
adverb B1
Related words
need
verb A1
Negative and opposite forms
unnecessary
adjective B1
unnecessarily
adverb
Advanced or less common
necessitate
verb C1
相关表达
if necessary
1/ˈɪf nˈɛsɪsˌɛɹi/
fixed phrase
Only if it is needed
Used to say that something will be done only if it is needed.
例句
- We can meet earlier if necessary.
- If necessary, I will drive you myself.
make it necessary
1/mˈeɪk ˈɪt nˈɛsɪsˌɛɹi/
fixed phrase
Cause something to be required
To cause a situation where something must be done.
例句
- The heavy rain made it necessary to cancel the game.
- His illness made it necessary for him to take time off work.
make the necessary arrangements
1/mˈeɪk ðə nˈɛsɪsˌɛɹi ɚˈeɪnd͡ʒmənts/
fixed phrase
Prepare what is needed for something
To plan and organize what is needed for something to happen.
例句
- Please make the necessary arrangements for the meeting.
- She made the necessary arrangements for her parents' visit.