act as
act as — 慣用語
1. to perform a job or be used in a particular role, often for a short time or inst
充當；擔任
暫時擔起某種職務或用途
to perform a job or be used in a particular role, often for a short time or instead of the usual person or thing.
During the strike, Ayesha acted as the reception manager for two days.
罷工期間，Ayesha 充當了兩天的接待經理。
act as + job title for a temporary duty
For the school play, Reuben acted as the narrator when Noah lost his voice.
在學校話劇裡，Noah 失聲時，Reuben 就擔任旁白。
act as + role when replacing someone
The folding screen acts as a wall between the two hospital beds.
那道折疊屏風在兩張醫院病床之間充當一道牆。
act as + object used for another purpose
Until the nurse arrived, Gabriel acted as interpreter for Paloma's grandmother.
在護理師趕到前，Gabriel 一直充當 Paloma 祖母的口譯。
- act as a guide
- act as interpreter
- act as a wall
- act as chairperson
- serve as
more neutral and often used for a general function
- fill in as
used when a person replaces someone temporarily
- function as
more common for objects or systems than people
文法句型
act as + job title
act as + role or object
用法筆記
Subject is often a person or thing that takes a job, place, or use normally filled by something else. Distinguish from sense 2, which is about producing an effect rather than filling a role.
常見錯誤
2. to produce a specific result or influence on someone or something.
起作用
對人或事產生某種效果
to produce a specific result or influence on someone or something.
Coffee acts as a stimulant for Rachid on night shifts.
上夜班時，咖啡對 Rachid 會起提神作用。
act as + stimulant for an effect on the body
On the skin, this cream acts as a barrier against cold wind.
擦在皮膚上時，這款乳霜會對冷風起阻隔作用。
act as + barrier for protection
In winter, this red lamp acts as a warning near the icy steps.
冬天時，這盞紅燈在結冰的階梯旁會起警示作用。
act as + warning for a practical effect
The extra salt acts as a preservative in the pickled lemons.
多加的鹽在醃檸檬裡會起防腐作用。
- act as a barrier
- act as a warning
- act as a stimulant
- act as a preservative
- function as
focuses on the part something plays in a system
- work as
more informal, especially for practical results
- operate as
more formal and common with rules or mechanisms
文法句型
act as + barrier
act as + warning or stimulant
用法筆記
Subject is usually a substance, object, or condition rather than a person. The noun after 'as' names the effect it has, not a temporary role, which is the idea in sense 1.