air-conditioner

air-conditioner — noun

1. a machine that makes the inside of a room or building cooler and usually drier.

1.名詞A2
釋義

a machine that makes the inside of a room or building cooler and usually drier.

例句

Please turn on the air-conditioner before the guests arrive.

collocation: turn on the air-conditioner

The air-conditioner in Room 302 stopped working during the meeting.

pattern: air-conditioner + in + place

同義詞
  • AC

    informal short form, especially common in speech, signs, and repair ads

  • air conditioner

    the same noun written without a hyphen; this spelling is very common

  • air-conditioning system

    broader and more formal; can mean the whole built-in cooling system

  • cooling unit

    more technical; often used by sellers or repair workers

反義詞
  • heater

    a machine used to warm a room instead of cooling it

文法句型

turn on the air-conditioner

set the air-conditioner to + temperature

用法筆記

Often used with verbs such as turn on, switch off, set, fix, and install. The spelling without the hyphen, 'air conditioner', is also very common, and many speakers shorten it to 'AC' in everyday use.

常見錯誤

❌Please open the air-conditioner.
✅Please turn on the air-conditioner.
💡for machines, use 'turn on' or 'switch on', not 'open'.
❌The shop has air-conditioner.
✅The shop has an air-conditioner.
💡as a singular countable noun, it needs an article.