public

public — adjective

1. connected with all the people who live in a society, rather than only a specific

1.形容詞B1
釋義

connected with all the people who live in a society, rather than only a specific group or a single person.

例句

Public opinion about the new recycling program has been very positive.

collocation: public opinion

The mayor held a public meeting to answer questions from local residents.

collocation: public meeting

同義詞
  • general

    used in 'general public' to mean the whole population, but not interchangeable for all collocations (e.g. 'general opinion' ≠ 'public opinion')

  • communal

    more formal and stresses shared ownership or use within a community

  • popular

    focuses on what many people like or support, rather than what involves them

反義詞
  • private

    belonging to or concerning a particular person or group, not the general population

文法句型

public + noun (public opinion, public interest, public health)

the public + noun

用法筆記

This is the broadest sense of 'public' as an adjective. It attaches to the noun that follows as something belonging to, affecting, or concerning everyone — not just a private individual or company. Do not use comparative forms (✗ 'more public opinion'); the concept is binary.

常見錯誤

This is a more public issue than that one.
This issue affects more people than that one does.
💡'public' does not have a comparative form.
The public opinion about the movie is good.
Public opinion about the movie is good.
💡no article needed when used as an adjective before a noun.

2. paid for, owned, or run by the government using money from taxes, so that everyo

2.形容詞B1
釋義

paid for, owned, or run by the government using money from taxes, so that everyone in a community can use it.

例句

Lakshmi takes the public bus to work every morning.

collocation: public transport

Public schools in the district received new computers from the city government.

collocation: public school

同義詞
  • state

    more common in British English for government-run institutions (e.g. 'state school')

  • government

    used as adjective ('government agency', 'government funding'), but less natural for services like transport

  • municipal

    used for local city or town government services

反義詞
  • private

    run by individuals or companies for profit, not by the government

文法句型

public + noun (public transport, public school, public library)

用法筆記

Distinguish from sense 1: sense 2 is about government ownership or funding, whereas sense 1 is about the general population as a whole. A 'public hospital' is government-run; 'public opinion' means what people think. Some nouns can take both senses with different meanings: 'public service' can mean a government service (sense 2) or a service for the community (sense 1).

常見錯誤

I go to a public school in America, and we pay tuition fees.
I go to a private school in America, and we pay tuition fees.
💡In the US, public schools are free and funded by the government.

3. describing a location, space, or area where anyone is allowed to go or where man

3.形容詞A2
釋義

describing a location, space, or area where anyone is allowed to go or where many people gather.

例句

Aoi enjoys reading novels in the public park near her apartment.

collocation: public park

Smoking is banned in all indoor public places across the city.

collocation: public place

同義詞
  • open

    emphasises lack of restrictions rather than crowd presence

  • communal

    stresses shared use by a group

反義詞
  • private

    restricted to a specific person or group, not freely accessible

  • enclosed

    not open to general view or entry

文法句型

public + noun (public place, public park, public space)

be + public (describing a location)

用法筆記

This sense applies specifically to physical locations. It overlaps with sense 2 when the place is government-owned (a 'public park' is usually also provided by the government), but the focus here is on open access and visibility, not funding source. A 'public square' in a privately owned shopping centre is still a 'public place' under this sense.

常見錯誤

This restaurant is a public place, so anyone can come in.
This restaurant is open to the public.
💡'public place' usually means a government-owned or outdoor space, not every business that serves customers.

4. describing a company whose ownership is divided into shares that any person can

4.形容詞B2
釋義

describing a company whose ownership is divided into shares that any person can buy or sell on a stock exchange.

例句

The tech start-up went public on the New York Stock Exchange last year.

phrasal pattern: go public

Selim invested in several public companies that focus on renewable energy.

collocation: public company

同義詞
  • listed

    more specific — means the company's shares are listed on a recognised stock exchange

  • traded

    emphasises that the company's shares are actively bought and sold

反義詞
  • private

    shares owned by a small group, not available to the general public

文法句型

public + noun (public company, public offering)

go + public (become a publicly traded company)

用法筆記

This is a specialised business sense. 'Public' here contrasts with 'private' (where shares are held by a small group and not traded on an exchange). 'Go public' is a fixed verb phrase meaning to issue shares for the first time (an Initial Public Offering, or IPO). The noun 'public' is not used in this business sense.

常見錯誤

Apple is a public company, so anyone can walk in and buy things there.
Apple is a public company, so anyone can buy shares in it on the stock exchange.
💡'public company' relates to share ownership, not customer access.

5. known or seen by many people because it is not hidden or kept private.

5.形容詞B1
釋義

known or seen by many people because it is not hidden or kept private.

例句

The actor's divorce became public after a newspaper published the story.

pattern: become public

Camila made a public apology for her comments during the live broadcast.

collocation: public apology

同義詞
  • open

    can replace 'public' in some contexts ('open secret', 'open knowledge'), but less formal

  • known

    simpler but not restricted to wide public awareness — can be known by a few people

  • overt

    formal, meaning done or shown in an open and obvious way

反義詞
  • secret

    kept hidden or known only by a few people

  • private

    not intended to be known or seen by others

  • confidential

    kept secret out of privacy or official policy

文法句型

make + something + public

become + public

be + public + noun (public figure, public knowledge)

用法筆記

Frequently used in the passive construction 'be made public' and 'become public'. Unlike senses 1–3, this sense regularly follows linking verbs. A 'public figure' is a well-known person, not necessarily a government official — the emphasis is on visibility, not on belonging to the general population.

常見錯誤

I want to make a public apology to my friend in private.
I want to apologise to my friend in private.
💡'public apology' means the apology is made openly where others can hear or see; apologising in private cannot be a public apology.

public — noun