- take action; do something行动; 做某事：
they urged Washington to act
他们敦促华盛顿采取行动
with infinitive governments must act to reduce pollution.各国政府必须采取行动减少污染。
act on
take action according to or in the light of根据（或按照）…采取行动：I shall certainly act on his suggestion.
我当然会按照他的建议行动。
act for
take action in order to bring about为…而行动：one's ability to act for community change.
某人为社会变化采取行动的能力。
act for/on behalf of
represent (someone) on a contractual, legal, or paid basis代理：he chose a solicitor to act for him.
他挑选了个律师作他的代理。
act from/out of
be motivated by出于…而做：you acted from greed.
你这么做是出于贪婪。
- with adverbial behave in the way specified行为, 行动：
they challenged a man who was seen acting suspiciously
他们盘问了一个被看见有可疑行为的男人
he acts as if he owned the place.
他的举止行为就好像他是那个地方的主人。
act as/like
behave in the manner of以…方式行动：try to act like civilized adults.
要像文明的成人那样行为处事。
act as
fulfil the function or serve the purpose of充当, 担任：they need volunteers to act as foster-parents.
他们需要志愿者来充当养父母。
- have the effect of起…作用：
a five-year sentence will act as a deterrent.
五年监禁将起到威慑作用。
- take effect; have a particular effect起作用; 见效：
bacteria act on proteins and sugar.
细菌对蛋白质和糖起作用。
- perform a fictional role in a play, film, or television（在戏剧、电影或电视里）扮演角色：
she acted in her first professional role at the age of six.
她六岁时扮演了第一个正式角色。
- with obj. perform (a part or role)扮演（角色）：
he acted the role of the dragon
他扮演龙的角色
doctors do not always act out the role of doctor.
医生不一定总是起到医生的作用。
- with complement behave so as to appear to be; pretend to be作出…的样子, 假装：
I acted dumb at first.
我开始时有意沉默。
- with obj.
act something out
perform a narrative as if it were a play表演, 将（故事）表演出来： encouraging pupils to act out the stories.
鼓励学生们将故事表演出来。
- with obj.
act something out
Psychoanalysis express repressed emotion or impulses in overt behaviour as a defensive substitute for conscious recall, typical of some behavioural disorders【心理分析】行为表现。
- a thing done; a deed行为：
a criminal act
犯罪行为
the act of writing down one's thoughts
写下某人的想法的举动
an act of heroism.
英雄主义行为。
- （Acts或Acts of the Apostles）a New Testament book immediately following the Gospels and relating the history of the early Church（《圣经·新约》中紧接着福音书, 与早期教会历史有关的）《使徒行传》。
- in sing. a pretence假装：
she was putting on an act and laughing a lot.
她装腔作势地笑了又笑。
- with adj. or noun modifier a particular type of behaviour or routine某种行为（或常规、惯例）：
he did his Sir Galahad act.
他干了一件加拉哈德爵士式的高尚事。
- Law a written ordinance of Parliament, Congress, etc.【律】（议会、国会等的书面）法令, 条例：
the 1989 Children's Act.
1989年《儿童法》。
- a document attesting a legal transaction判决书。
- （常作acts）dated the recorded decisions or proceedings of a committee or an academic body〈旧〉（委员会或学术团体的）决定记录, 会议记录, 公报,学报。
- a main division of a play, ballet, or opera（戏剧、芭蕾舞剧或歌剧的）幕。
- a set performance表演：
her one-woman poetry act.
她的女独诗朗诵。
- a performing group演出团体：
an act called the Apple Blossom Sisters.
苹果花姐妹剧团。
act of God
- an instance of uncontrollable natural forces in operation (often used in insurance claims)常用于保险索赔不可抗力。
act of grace
- a privilege or concession that cannot be claimed as a right恩典, 大赦令。
catch someone in the act
- surprise someone in the process of doing something wrong当场抓住（或发现）某人做坏事：
the thieves were caught in the act.
窃贼们被当场抓住。
clean up one's act
- behave in a more acceptable manner改进举止。
get one's act together
- informal galvanize oneself into organizing one's life or affairs effectively〈非正式〉（使自己的生活处事）有头绪; 有条有理地行事。
get（或be） in on the act
- informal become or be involved in a particular activity, in order to gain profit or advantage〈非正式〉（为获得利益或有利条件而）加入（或参与）（活动）, 插一手。
a hard （或tough） act to follow
- an achievement or performance which sets a standard regarded as being hard for others to measure up to难以取得的成就（或成绩）。
in the act of
- in the process of在…过程中：
they photographed him in the act of reading other people's mail.
他们拍下了他私看他人信件的过程。
actability
nounactable
adjectiveact up
- (of a thing) fail to function properly（某物）运转不正常：
the plane's engine was acting up.
飞机引擎运转不正常。
- (of a person) misbehave（人）行为不端。
- (of a person) take over or be promoted to a more senior position, typically on a temporary basis（人）（多指暂时）接任更高职位, 擢升。