act

/ækt/ (bre, ipa) · [ˈækt] /ækt/ (ame, ipa) · [ˈækt] /ˈakt/ (ame, mw)

act — 動詞

  • actpresent simple I / you / we / they
  • actshe / she / it
  • actedpast simple
  • acting-ing form

1. to show a certain manner through what you say or do

1.動詞不及物A2
釋義

表現

以某種方式行事

to show a certain manner through what you say or do

例句

Greta acted calmly while the fire alarm rang in the library.

警報在圖書館響起時,Greta 表現得很冷靜。

act + adverb

At the clinic, Christopher acted politely even after a long wait.

在診所裡,就算等了很久,Christopher 仍然表現得很有禮貌。

同義詞

文法句型

act + adverb

act like + noun

用法筆記

Often followed by an adverb or by like + noun to show the manner of behaviour.

常見錯誤

He did very calm in class.
He acted very calmly in class.
💡use 'act' when you describe behaviour, not 'do'.

2. to step in and do what is needed for a problem or goal

2.動詞不及物B2
釋義

採取行動

為處理問題而做事

to step in and do what is needed for a problem or goal

例句

Joon acted quickly and moved the children away from the broken glass.

Joon 立刻採取行動,把孩子們帶離碎玻璃。

act quickly

After the leak spread, Tanvi acted to close the kitchen valve.

漏水擴大後,Tanvi 採取行動去關上廚房的閥門。

act + to infinitive

同義詞
  • respond

    usually follows a clear event or warning

  • intervene

    suggests stepping in to change a situation

文法句型

act + quickly

act + to infinitive

act on behalf of + person

用法筆記

Used when someone stops waiting and does something practical. Distinguish from sense 1, which describes manner rather than a step taken.

常見錯誤

The town acted a new plan.
The town acted to start a new plan.
💡this sense is usually intransitive, often followed by 'to'.

3. to start changing something or producing a result

3.動詞不及物B2
釋義

起作用

開始產生效果

to start changing something or producing a result

例句

The pain medicine acted within minutes and eased Marta's back.

止痛藥幾分鐘內就起作用,減輕了 Marta 的背痛。

act within + time

Warm water acts faster when dry glue covers a thin layer.

當乾掉的膠只蓋住薄薄一層時,溫水起作用會更快。

同義詞
  • work

    more general and common in everyday speech

  • affect

    focuses on the result rather than the process

文法句型

act on + object

act quickly/slowly

用法筆記

Often used for medicine, heat, light, or chemicals. The pattern 'act on' names the thing that is changed.

4. to appear as a character before an audience or camera

4.動詞及物 / 不及物B1
釋義

演出;飾演

在戲劇或影片中演角色

to appear as a character before an audience or camera

例句

Shirin acted the mother in the school play on Friday.

Shirin 在星期五的校內戲劇裡飾演母親。

act + role

Linh wants to act in films after finishing drama college.

Linh 想在讀完戲劇學院後去演電影。

act in + film

同義詞
  • perform

    broader and can apply outside acting roles

  • play

    especially common before the role name

文法句型

act in + play/film

act the part of + role

用法筆記

Use 'act in' for appearing in a production and a direct object for the role itself.

5. to behave badly or in a foolish way

5.動詞不及物B2
釋義

胡鬧

舉止不好或很愚蠢

to behave badly or in a foolish way

例句

Andrew kept acting the fool and made the younger children cry.

Andrew 一直裝傻胡鬧,還把年紀更小的孩子弄哭了。

act the fool

At dinner, Harper acted badly and threw rice onto the floor.

吃晚飯時,Harper 很胡鬧,還把飯丟到地上。

同義詞

文法句型

act the fool

act + adjective

act like + noun

用法筆記

Often used when someone behaves in an annoying, childish, or rude way. Distinguish from sense 6, which is about pretending rather than simple bad behaviour.

6. to pretend to have a feeling, quality, or identity

6.動詞不及物B2
釋義

假裝

裝成有某感受或身分

to pretend to have a feeling, quality, or identity

例句

Yara acted brave, but her hands shook under the desk.

Yara 假裝勇敢,可是她的手在桌下發抖。

act + adjective

When the bill arrived, Eitan acted surprised and checked his empty wallet.

帳單一送來,Eitan 就假裝很驚訝,還去看自己空空的皮夾。

同義詞
  • pretend

    the closest everyday synonym

  • feign

    more formal and often used for feelings

文法句型

act + adjective

act as if + clause

act like + noun

用法筆記

Usually suggests that the behaviour is not genuine. Distinguish from sense 7, where the person or thing really performs the role named after as.

7. to do the job of a person or thing, or be used for a purpose

7.動詞不及物B2
釋義

充當

正式擔任某角色或用途

to do the job of a person or thing, or be used for a purpose

例句

Wren acted as team captain while the coach stayed in hospital.

教練住院時,Wren 充當隊長。

act as + role

The hall acted as a shelter after the storm damaged homes.

暴風雨毀了許多住家後,大廳充當避難所。

act as + purpose

同義詞
  • serve

    broadly means do a role or purpose

  • function

    stresses the use or purpose of a thing

文法句型

act as + role

act as + purpose

用法筆記

This sense is about a real role or function. It can describe a person, place, tool, or system.

act — 名詞