lose consciousness

lose consciousness — 慣用語

1. to suddenly stop being awake and aware of your surroundings, usually because of

1.慣用語B1
釋義

昏倒；暈厥

突然失去知覺、昏過去

to suddenly stop being awake and aware of your surroundings, usually because of a drop in blood pressure, shock, heat, or strong emotion — for example, fainting in a hot room or passing out after receiving bad news.

例句

The heat inside the train was so unbearable that an elderly passenger lost consciousness and collapsed.

火車上的熱氣實在讓人受不了，一位老先生因此失去知覺，倒了下來。

lose consciousness + and + verb of collapse

Romi lost consciousness for a few seconds after standing up too quickly, then felt fine.

Romi 站起來站得太快，短暫失去知覺幾秒鐘，之後就沒事了。

adverbial of duration: for a few seconds

同義詞
  • pass out

    informal; the most common everyday alternative

  • faint

    specifically from reduced blood flow to the brain; suggests recovery is quick

  • black out

    implies a temporary loss of memory along with consciousness, often from alcohol or a blow

反義詞

文法句型

lose consciousness + when/because clause

用法筆記

Common with adverbials of duration (for a moment, briefly) or circumstance (from heat, from shock). The shorter, informal equivalent is pass out.

常見錯誤

❌She lost her consciousness after falling.
✅She lost consciousness after falling.
💡consciousness is uncountable; no possessive determiner is used.
❌He lost his conscious and fell.
✅He lost consciousness and fell.
💡conscious is an adjective; the noun form consciousness is needed.

2. to enter a state in which you cannot see, hear, feel, or think, typically result

2.慣用語B1
釋義

昏迷

因受傷或疾病而無法感知周遭

to enter a state in which you cannot see, hear, feel, or think, typically resulting from a head injury, a medical condition, anaesthesia, or a severe physical event — used in both medical contexts and everyday descriptions of serious incidents.

例句

The cyclist lost consciousness after hitting his head on the pavement and was rushed to hospital.

那位單車騎士頭部撞到柏油路後失去意識，被緊急送醫。

lose consciousness + after + cause of injury

Patients who lose consciousness during a seizure need immediate medical attention.

癲癇發作時失去意識的患者需要立即就醫。

during + [medical event]

同義詞
反義詞

文法句型

lose consciousness + due to [cause]

consciousness is lost + when [condition]

用法筆記

Frequently describes the result of trauma, stroke, seizure, sedation, or poisoning. In medical charts, the shorter form LOC is sometimes used as an abbreviation.

常見錯誤

❌The doctor said he lost his conscious during the operation.
✅The doctor said he lost consciousness during the operation.
💡Use the noun consciousness, not the adjective conscious.