power on

power on — 片語動詞

  • power onbase form
  • powers on3rd person singular
  • powering on-ing form
  • powered onpast simple

1. to make an electronic device or machine begin operating by connecting it to a po

1.片語動詞B1
釋義

開機；啟動

接通電源使設備開始運作

to make an electronic device or machine begin operating by connecting it to a power source or pressing a control, or to start operating in this way

例句

Tuan powered on his laptop before the meeting started.

Tuan 在會議開始前打開了筆記型電腦。

power + on + [object] — device as direct object

Make sure you power the printer on before you connect it to the network.

連接網路前，記得先把印表機電源打開。

power + [object] + on — separable pattern

常見搭配
  • power on a computer/laptop/tablet
  • power on a printer/scanner
  • power on the system/server
  • power on a device/machine
  • fully power on
同義詞
  • switch on

    more common for lights and small appliances; implies a simple toggle action

  • turn on

    most general term; works for any device with an on/off switch

  • start up

    suggests a longer boot or loading process, especially for computers or large machinery

反義詞
  • power off

    the direct antonym in the same phrasal-verb pattern

  • shut down

    implies a proper closing procedure, especially for computers

文法句型

power + on + [object]

power + [object] + on

用法筆記

Separable phrasal verb: the object can go before or after 'on' (power the computer on / power on the computer). For simple switches (lights, fans), 'turn on' or 'switch on' is more natural than 'power on'.

常見錯誤

I powered on the car and drove away.
I started the car and drove away.
'power on' refers to electronic devices, not vehicles with combustion engines.
Can you power on the kitchen light?
Can you turn on the kitchen light?
'power on' implies a boot-up sequence; use 'turn on' for simple switches.