opened

opened — verb

1. for a meeting, discussion, or period of activity to start, or for someone to cau

1.動詞及物 / 不及物A2
釋義

for a meeting, discussion, or period of activity to start, or for someone to cause it to start

例句

The sales conference opens with a keynote speech by the CEO.

open with + noun phrase for starting an event

The new semester opened on Monday with a welcome ceremony for students.

同義詞
  • begin

    more general and neutral; 'open' is more formal and specific to events

  • start

    the most common everyday alternative; 'open' has a more ceremonial feel

  • commence

    very formal; used in legal or academic contexts

反義詞
  • close

    the direct opposite for events and meetings

  • end

    general opposite for any activity

文法句型

open + with + noun phrase

open + noun phrase

用法筆記

Frequently used with 'with' to describe how an event begins: The concert opened with a violin solo.

常見錯誤

❌The meeting opened at 10 am with a speech.' sounds unnatural for a simple start time.
✅The meeting started at 10 am with a speech.
💡Use 'open' for a planned formal beginning, not just a time reference.

2. to appear on stage before the main performer or headliner in a concert or show,

2.動詞不及物B1
釋義

to appear on stage before the main performer or headliner in a concert or show, as the first act

例句

A local band called The Comets opened for the famous singer at the stadium.

open for + headliner/performer

Yael opened for the headliner during the European tour last summer.

同義詞
  • support

    British English; 'to support a band' means to open for them

反義詞
  • headline

    to be the main performer that others open for

文法句型

open for + noun phrase (performer)

用法筆記

This sense is specific to entertainment: musicians, comedians, and performers. No passive construction is common.

3. to move a door, window, lid, or other object so that it no longer blocks an entr

3.動詞及物A1
釋義

to move a door, window, lid, or other object so that it no longer blocks an entrance, passage, or container

例句

Christopher opened the window because the room was too hot and stuffy.

open + door/window/lid — physical object

Camila opened her eyes slowly when the morning sun came through the curtains.

同義詞
  • unlock

    more specific — means to open something that was locked with a key

  • unfasten

    more specific — means to undo a fastener like a latch or buckle

反義詞
  • close

    the direct opposite for doors, windows, containers, eyes, etc.

  • shut

    synonym of close; 'shut' can sound more forceful

文法句型

open + noun phrase (object)

用法筆記

Frequently used with body parts (eyes, mouth, hands) as well as physical objects like doors, windows, containers, and books.

常見錯誤

❌I opened the light.' (influenced by some languages).
✅I turned on the light.
💡'Open' cannot be used for electrical switches or lights.

4. to cut, tear, or lift the covering of something such as a parcel, envelope, or b

4.動詞及物A2
釋義

to cut, tear, or lift the covering of something such as a parcel, envelope, or box so that you can see or reach what is inside

例句

Obi opened the package carefully with a pair of kitchen scissors.

open + package/parcel/box — revealing contents

Élise opened the envelope and pulled out a handwritten letter from her aunt.

同義詞
  • unwrap

    specifically about removing paper or wrapping

  • unseal

    about breaking a seal on a container or letter

反義詞
  • wrap

    to cover something with paper or material

  • seal

    to close something securely

文法句型

open + noun phrase (container or parcel)

用法筆記

Distinguish from sense 3: sense 3 is about moving a door or lid that is already attached; sense 4 is about removing or breaking a seal, wrapper, or lid to get to contents.

常見錯誤

❌I opened the wrapping paper.' (unusual).
✅I opened the present.
💡The object is what contains the contents, not the covering material itself.

5. for a shop, restaurant, bank, or other business to be available and ready for cu

5.動詞不及物A2
釋義

for a shop, restaurant, bank, or other business to be available and ready for customers to enter at a particular time of day

例句

The bakery opens at seven in the morning so people can buy bread before work.

open + at + time (daily schedule)

Tuan waited outside the bookstore until it opened at half past nine.

反義詞
  • close

    to stop being available for customers at the end of the day

文法句型

open + at/on (time)

用法筆記

Only businesses and services can be subjects. The subject is the establishment, not a person. For person-as-subject (the owner opening the shop), see sense 7.

常見錯誤

❌The shop opens from 9 to 6.' (acceptable but vague about opening time).
✅The shop opens at 9 and closes at 6.
💡Specify the opening time clearly.

6. for a person of authority, such as a mayor or director, to perform a formal cere

6.動詞及物B1
釋義

for a person of authority, such as a mayor or director, to perform a formal ceremony that declares a building, event, or facility ready to be used

例句

The mayor opened the new public library with a short speech in the main hall.

authority figure + open + building — formal ceremony

The governor opened the art exhibition by cutting a red ribbon at the entrance.

同義詞
  • inaugurate

    more formal; often used for major public buildings or political terms

反義詞
  • close

    to formally end operations; 'close down' for permanent closure

文法句型

open + noun phrase (building or event)

用法筆記

Frequently used in the passive voice: 'The new airport was officially opened last week.' Subject must be a person in authority.

常見錯誤

❌The manager opened the shop at 9.' (if just meaning started business — use sense 5 or 7).
✅The CEO opened the new headquarters with a ribbon-cutting ceremony.
💡This sense requires a formal, ceremonial context.

7. to create or establish something new that people can use, such as a business, a

7.動詞及物B1
釋義

to create or establish something new that people can use, such as a business, a service, a bank account, or an opportunity

例句

Sari opened a savings account at the bank near her office last week.

open + bank account — common collocation

The company opened a new branch in the city center to reach more customers.

open + branch/office/restaurant — establishing a business location

同義詞
  • establish

    more formal; suggests a more permanent or official creation

  • set up

    informal; common in everyday speech for businesses and accounts

  • start

    neutral; works for businesses and accounts in less formal contexts

反義詞
  • close

    to stop operating a business or account permanently

  • shut down

    informal phrasal verb for closing a business

文法句型

open + noun phrase (account, branch, opportunity)

用法筆記

Distinguish from sense 5: sense 5 is about daily business hours (the shop opens at 9). This sense is about creating or starting something new (open a shop = start a new business).

常見錯誤

❌I opened a new phone number.
✅I got a new phone number.
💡'Open' is not used for phone numbers, email addresses, or most memberships. Use it for: accounts, branches, businesses, and formal channels.

8. to give a command that makes a computer file, document, or program ready to be v

8.動詞及物A2
釋義

to give a command that makes a computer file, document, or program ready to be viewed, read, or used on screen

例句

Mert opened the spreadsheet by double-clicking the icon on his desktop.

open + file by double-clicking — common computing action

Hana opened a new browser tab and typed her search into the address bar.

open + tab/window — browser interface vocabulary

同義詞
  • launch

    more common for programs/applications than for individual files

  • access

    broader — includes opening, logging into, or retrieving files from a system

反義詞
  • close

    to exit a file, document, program, or tab

文法句型

open + noun phrase (file, document, program, tab)

用法筆記

The opposite is 'close' (to exit a file or program). In informal speech, people also say 'pull up' (open a document quickly) or 'launch' (open a program).

常見錯誤

❌Please open the computer.' (meaning turn on).
✅Please turn on the computer.' or 'Please start the computer.
💡'Open' is for files and programs, not for hardware.