act1/ækt; ækt/v 1 [I] to do something 做事﹔采取行动: Unless the UN acts soon, more people will die. 联合国若不迅速采取行动﹐将会有更多的人死亡。act on advice/orders/instructions (=do what someone says) 按照建议/命令/指示行动 We’re acting on the advice of our lawyer. 我们在按照律师的建议行事。2 [I] to behave in a particular way〔以某种方式〕表现: Nick's been acting strangely recently. 尼克最近行为奇怪。Do you think the company acted reasonably ? 你认为公司的做法合理吗?+like Stop acting like a baby! 别再像个小孩子似的了!act cool/crazy/tough etc a gang of boys trying to act tough 一帮装厉害的男孩子He's not really upset – he's just acting (=pretending to be upset)! 他不是真的难过 — 他只是装的! 3 [I,T] to perform in a play or film〔在戏剧或电影中〕表演﹐扮演〔角色〕: She started acting when she was 12. 她 12 岁开始演戏。Which character are you acting? 你扮演哪个人物?4 [I] to have a particular use or effect 起作用: +as Salt acts as a preservative. 盐有防腐作用。+on the way that drugs act on the brain 药物作用于大脑的方式act as agent/chairman/consultant etc (=do a particular job, especially for a short time) 〔尤指短时地〕担任代理人/主席/顾问等 Mr Compton has kindly agreed to act as Secretary for this event. 康普顿先生友好地答应担任这次活动的秘书长。act sth out phr v to show how something happened by performing it like a play 将…演出来: The children read the story and then acted it out. 孩子们读了故事﹐然后把它表演出来。act up phr v if a child acts up, he or she behaves badly〔小孩子〕表现不好﹐捣乱
act2n 1 [C] something that you do 行为﹐行动﹐举动: +of an act of kindness 善意的行为in the act of doing sth (=at the moment that you are doing something) 正在做某事时 The man was caught in the act of leaving the building. 那名男子离开大楼时被逮住了。a criminal act 犯罪行为2 also 又作 Act [C] a law that has been officially accepted by the government〔正式通过的〕法令﹐法律: The Criminal Justice Act 《刑事审判法》Act of Congress/Parliament 国会/议会法令3 also 又作 Act [C] one of the main parts of a play, OPERA etc〔戏剧﹑歌剧等的〕一幕: Hamlet kills the king in Act 5. 哈姆雷特在第五幕中杀死了国王。4 [C] a short piece of entertainment on television or stage〔电视或舞台上的〕一段表演﹔节目: a comedy act 一段喜剧表演5 [singular 单数] behaviour that is not sincere 装模作样﹐装出来的行为: He never loved me – it was just an act . 他根本不爱我﹐那都是假装的。6 get your act togetherinformal to start to do things in a more organized way【非正式】更有条理些﹐加把劲﹐集中精力: You’ll have to get your act together before the exams. 考试前你得加把劲。7 get in on the actinformal to become involved in a successful activity that someone else has started【非正式】插手﹐参与〔别人发起并做得很好的活动〕