open

open — 動詞

  • openpresent simple I / you / we / they
  • opens3rd person singular
  • opening-ing form
  • openedpast simple

1. to move something, or to move, from a shut position so people can pass, see, or

1.動詞及物 / 不及物A1
釋義

打開

把門窗口等由關變開

to move something, or to move, from a shut position so people can pass, see, or use it.

例句

Nina opened the kitchen window after the soup burned.

湯燒焦後,Nina 打開了廚房窗戶。

open + door/window

The gate opened slowly when the guard pressed the button.

警衛按下按鈕後,大門慢慢打開了。

intransitive: gate/door opens

同義詞
  • uncover

    mainly for taking something off the surface of another thing

  • unfasten

    used when something is held shut by a button, zip, or strap

  • unlock

    specifically for removing a lock, not for every kind of opening

反義詞
  • close

    the usual opposite for doors, windows, and mouths

  • shut

    often interchangeable with 'close' in everyday speech

文法句型

open + door/window/gate

[door/gate/flower] open(s)

open your mouth/eyes

用法筆記

This sense covers doors, windows, gates, mouths, eyes, and similar things that move from shut to unshut. Distinguish from sense 4, which focuses on removing a lid, wrapper, or seal to reach what is inside.

常見錯誤

Open the light.
Turn on the light.
💡'open' is used for things that shut and open, not for switching electricity on.

2. to remove a lid, seal, or wrapping from a box, bag, bottle, or package in order

2.動詞及物A2
釋義

拆開;拆封

把包裹容器打開取內容物

to remove a lid, seal, or wrapping from a box, bag, bottle, or package in order to reach the things inside.

例句

Lily opened the parcel with scissors at the kitchen table.

Lily 在廚房桌邊用剪刀拆開了包裹。

open + parcel/jar/packet

We opened the jar and smelled fresh peach jam.

我們打開果醬罐時,聞到了新鮮桃子香。

同義詞
  • unwrap

    best when paper, plastic, or cloth is around the item

  • unseal

    best when a seal or tight closure is broken

  • unpack

    often means taking several things out after opening

反義詞
  • seal

    to close something tightly so nothing gets in or out

  • close

    general opposite once the container has been used

文法句型

open + parcel/jar/packet

open + box/bag/bottle

用法筆記

The object is usually a box, bag, bottle, jar, packet, parcel, or similar container. Distinguish from sense 3, where a door, gate, mouth, or flower moves into an open position.

常見錯誤

I opened the medicine and drank it.
I opened the medicine bottle and drank it.
💡the object should be the container, not the thing inside it.

3. if a business or public place opens, it begins serving people; if someone opens

3.動詞及物 / 不及物A2
釋義

營業;開門

店家或機構開始服務

if a business or public place opens, it begins serving people; if someone opens one, they start it.

例句

The bakery opens at seven, so breakfast is easy here.

那家麵包店七點營業,所以在這裡吃早餐很方便。

place opens at + time

A new clinic opened across from the station last month.

車站對面那家新診所上個月開門營業。

同義詞
  • start

    common when someone begins a business

  • launch

    more formal and common for a new service or venture

  • set up

    stresses establishing the business rather than its daily hours

反義詞
  • close

    used for the end of business hours or permanent closure

  • shut down

    common when a business stops operating completely

文法句型

[shop/office/library] open(s) at + time

open + shop/business/place

用法筆記

The subject is usually a shop, office, clinic, library, museum, or similar place. With a person as subject, the object is the business or place they start; sense 6 is the ceremonial use.

常見錯誤

The bank is opened at nine.
The bank opens at nine.
💡use the active form for regular business hours.

4. to let people use, enter, or join something that was not available before.

4.動詞及物
釋義

開放;提供

讓人可以使用或參加

to let people use, enter, or join something that was not available before.

例句

The town opened two free water stations during last summer's heat wave.

那個小鎮在去年夏天熱浪期間開放了兩個免費供水站。

open a service for public use

Our school opened the gym to neighbors on rainy weekends.

我們學校在下雨的週末把體育館開放給鄰居使用。

open + place + to + group

同義詞
  • make available

    the closest broad equivalent, especially in neutral writing

  • provide

    focuses more on giving a service or chance

  • launch

    often used for a new service, product, or program

反義詞
  • close

    means to stop access or use

  • restrict

    means to limit who can use something

文法句型

open something to someone

open more seats / classes / lanes

open a place or service for public use

用法筆記

The subject is often a school, company, government, or other organization, and the object is usually a place, service, route, or opportunity. Distinguish from sense 6 (READY), where someone officially declares a building or event ready.

常見錯誤

The museum opened visitors on Monday.
The museum opened the gallery to visitors on Monday.
💡the object is the place or service made available, not the people using it.

5. to make a file, website, or program appear on the screen so you can read or use

5.動詞及物B1
釋義

開啟

把檔案或程式打開使用

to make a file, website, or program appear on the screen so you can read or use it.

例句

Lena opened the photo file to print Grandma's birthday picture.

Lena 開啟了照片檔案,好列印奶奶的生日照片。

open + file

Please open the map app before we leave the station.

我們離開車站前,請先開啟地圖 app。

open + app

同義詞
  • load

    common for bringing a file or page into a program

  • launch

    more common for apps or programs than for files

  • bring up

    informal and often used for showing something on screen

反義詞
  • close

    means to stop showing the file or program

  • exit

    often used when leaving a program

文法句型

open a file

open a program or app

open an attachment or record

用法筆記

Use this sense for digital things on a screen, not for starting the machine itself. Distinguish from sense 3 (NOT CLOSED), where you move a door, lid, or similar object.

常見錯誤

Open the computer and send me the file.
Turn on the computer and open the file.
💡'open' is for the file or program, not for switching the machine on.

6. to start, or to make an event, activity, or period start.

6.動詞及物 / 不及物B2
釋義

開始;展開

使活動或時段開始

to start, or to make an event, activity, or period start.

例句

The meeting opens at nine, so please arrive early.

會議九點開始,所以請早點到。

intransitive: open at + time

Coach Rivera opened practice with ten minutes of stretching.

Coach Rivera 先做十分鐘伸展,展開了練習。

open + event with + first activity

同義詞
  • begin

    the closest everyday equivalent

  • start

    very common and often slightly less formal

  • launch

    more common for products, campaigns, or formal programmes

反義詞
  • end

    marks the finish rather than the start

  • close

    can mean bring a meeting or show to its end

文法句型

open at + time

open with + first part

open + event/activity

用法筆記

Often used for meetings, shows, lessons, speeches, and stretches of time. Distinguish from sense 2, which is specifically about performing before the main act in a show.

常見錯誤

The movie opened by a song.
The movie opened with a song.
💡use 'with' for the first part that begins the event.

7. if an important person opens a building, exhibition, or event, they officially a

7.動詞及物B2
釋義

啟用;開幕

正式宣布建物或活動開始

if an important person opens a building, exhibition, or event, they officially announce its start.

例句

The mayor opened the new bridge with a short speech.

市長以簡短致詞,為新橋主持啟用。

officially open + building/event

Mayor Wu opened the art festival on Friday morning.

Mayor Wu 在星期五早上為藝術節主持開幕。

同義詞
  • inaugurate

    formal word for officially starting a public building or event

  • launch

    works for programmes and campaigns, but is broader

  • dedicate

    often used when a building or monument is formally presented

反義詞
  • close

    to stop or end the event or service rather than begin it

文法句型

open + bridge/building/event

officially open + place/event

用法筆記

The subject is usually a mayor, president, royal, or other public figure, and the object is often a public building or event. Distinguish from sense 5, which is about regular business hours or starting a business.

常見錯誤

The guard opened the museum yesterday.
The mayor opened the museum yesterday.
💡this ceremonial sense usually needs a public figure, not the person who unlocked the door.

8. to perform first in a concert or show, before the star act comes on.

8.動詞不及物
釋義

暖場;開場

在正式主秀前先表演

to perform first in a concert or show, before the star act comes on.

例句

A local jazz band opened for the singer in Kaohsiung.

一支本地爵士樂團在高雄替那位歌手暖場。

open for + main performer

Mina's band is opening for the main band at the arena.

Mina 的樂團今晚會在體育館替主樂團開場。

同義詞
  • support

    common in British English for performing before the main act

  • warm up

    informal and often used for getting the audience ready

文法句型

open for + performer

open before + main act

用法筆記

Usually followed by 'for' plus the better-known act. Unlike sense 1, the subject here is the performer who appears first, not the event itself.

常見錯誤

Mina opened the concert.
Mina opened for the main band.
💡this sense means she performed before the main act, not that she officially began the event.

open — 名詞

open — 形容詞