alert是什么意思

短语搭配

(1)orange alert橙色预警

(2)be alert to警惕；保持警觉；应留意

(3)alert to警觉

(4)on the alert处于戒备状态

(5)be alert警惕；保持警惕；警觉

(6)high alert高度警戒

(7)red alert红色警报；红色警戒；红色预警

(8)alert status警戒状态

(9)state of alert警戒状态；警觉状态；戒备状态

(10)full alert全面戒备；全部警戒；全员戒备状态

(11)nationwide alert全国性的警报

(12)air alert空袭警报；空气警报

(13)alert police报警

(14)24-hour alert24小时警戒

(15)alert user警告用户

(16)heat alert高温警报；高温橙色警报；橙色高温预警

(17)agent alert代理警报

(18)smog alert烟雾警报；烟雾警告

(19)alert driver提醒司机；警示司机

(20)increased alert增长的警惕心；加强的警戒状态

(21)alert for…警惕……；小心……

(22)be-on-the-lookout alert注意警报；注意警戒

双语例句

(1)On hearing the fire alert, people poured out of the building.

一听到火警警报，人们就纷纷涌出大楼。

(2)The policeman alerted the gangster to put down his gun at once.

警察警告这个匪徒立即放下枪。

(3)She became alert when she found someone following behind her.

当她发现有人跟随她时，她变得警觉起来。

(4)But her prey are always on high alert.

但她的猎物时刻保持高度机警

(5)The police are still on high alert as the suspect continues to elude them.

嫌疑人仍然在逃，警察一直处于高度戒备状态。

(6)The bank is alert to the danger.

该银行对这种危险有警觉。

(7)Her whole bearing was alert.

她整个人保持着戒备状态。

(8)We all have to stay alert.

我们都必须保持警觉。

(9)Two alert scientists spotted the mistake.

两个警觉的科学家发现了这个错误。

(10)The security alert brought the airport to a standstill.

安全警戒使机场陷入停顿状态。

同义词

vt. 警告；使警觉，使意识到

adj. 警惕的，警觉的；留心的

n. 警戒，警惕；警报

反义词

同根词

词根 alert

(1)alertly adv. 留意地；提高警觉地

(2)alertness n. 警戒；机敏

释义

adj.

quick to notice any unusual and potentially dangerous or difficult circumstances; vigilant

警惕的，警觉的，机警的

an alert police officer discovered a lorry full of explosive

一位警惕的警官发现了一辆满载炸药的卡车

schools need to be constantly alert to this problem.

各学校对此问题应该始终保持警惕。

able to think clearly; intellectually active

机灵的，机敏的

she remained active and alert until well into her eighties.

她８０多岁时仍然活跃机敏。

n.

the state of being watchful for possible danger

警惕，警戒

security forces were placed on alert.

安全部队处于警戒状态。

[count noun]an announcement or signal warning of danger

警报，警示

a bomb alert

轰炸警报

an alert sounded and all the fighters took off.

警报响了，所有的战斗机随之起飞。

[count noun]a period of vigilance in response to such a warning

警戒期

traffic was halted during the alert.

警戒期间交通被中断。

[count noun]a signal on an electronic device that prompts the user to do something or attracts their attention

（电子设备的）提示信号

a vibrating alert is a discreet alternative to ringtones.

　相对于铃声信号而言，振动提示信号是一种谨慎的替代手段。

v.

warn (someone) of a danger, threat, or problem, typically with the intention of having it avoided or dealt with

（尤指为了避免或应付危险、威胁或问题而）提醒，警告（某人）

he alerted people to the dangers of smoking

他提醒人们注意吸烟的种种危害

police were alerted after three men drove away without paying.

三个男人没付钱就开车走掉之后，警方开始警觉起来。

短语

on the alert vigilant and prepared 处于戒备状态 security forces are on the alert for an upsurge in violence． 安全部队处于戒备状态，以防暴力升级

易错必背词

stay alert 保持警惕

(1)Being sharp doesn't mean we have to stay alert all the time.

敏锐并不意味着我们必须时刻保持警惕。[福建 2022 七选五]

alert eyes 警觉的眼睛

(1)Sitting on the doorstep was a kitten with an exotic black coat and alert amber eyes.

坐在门阶上的是一只小猫，它有着奇异的黑色皮毛和警觉的琥珀色眼睛。[上海 2022 阅读理解]

be alert to/for ... 对...警觉；对...留意

(1)Individuals aren't alert enough to the underinvestment in flu prevention.

个人对流感预防投资不足没有足够的警觉。[北京 2022 阅读理解]

(2)I continued on my way, alert for any sound.

我继续赶路，留意着任何声音。[广东 2022 完形填空]

alert sb to sth 提醒某人注意某事

(1)Because large quantities of rubbish have been thrown there, we should alert the public to the danger of it.

因为大量的垃圾被扔在那里，我们应该提醒公众注意垃圾的危险性。[黑龙江 2022 单选]

on high/red alert 处于高度/红色戒备状态

(1)In a safe environment today, however, it would be wasteful to be on high alert constantly.

然而，在今天的安全环境中，持续保持高度警惕是一种浪费。[上海 2022 概要写作]

(2)You are on red alert.

你处于红色警戒状态。[上海 2022 语法填空]

词源

"late 16th cent． （originally in military use）： from French alerte, from Italian all' erta ‘to the watchtower’．"

考纲分布

近12年出现0次

重要程度: 2星

0%; adj 警觉的

0%; vt 向…报警; 使意识到

0%; n 警报

考纲释义

( 1)adj. 警觉的

( 2)vt. 向…报警; 使意识到

( 3)n. 警报

考纲分布

近9年出现18次

重要程度: 5星

56%; adj/un/v 警戒(的); 使警戒

22%; v/adj (使)意识到

11%; n 警报

6%; n 警戒期

6%; adj/n 机灵的; 灵敏的

考纲释义

( 1)adj/un/v. 警戒(的); 使警戒

英文释义：quick to notice any unusual and potentially dangerous or difficult circumstances; \na situation in which people are watching for danger and ready to deal with it; \nwarn someone about a dangerous or urgent situation

真题例句：

The research team say they believe the "alert-but-passive" nature of television watching may be creating stress on the mind which contributes to memory decline.

该研究小组表示，看电视“警觉但被动”的本质可能会给大脑造成压力，从而导致记忆力下降。[2020年 CET4 听力]

( 2)v/adj. (使)意识到

英文释义：make someone aware of something; \naware of something; especially a problem or danger

真题例句：

We need to be alert to the possible harm of violent games that could be done to children.

我们需要警惕暴力游戏可能对儿童造成的伤害。[2021年 CET4 写作]

( 3)n. 警报

英文释义：a warning of danger or of a problem

真题例句：

Evacuate the area with the orange alert.

用橙色警报撤离该地区。[2020年 CET4 听力]

The transport minister advised people in parts of Scotland covered by the orange alert to avoid travel on Wednesday.

交通部长建议出现橙色警报的苏格兰部分地区的居民周三避免出行。[2020年 CET4 听力]

( 4)n. 警戒期

英文释义：the period during which an alert is in effect

( 5)adj/n. 机灵的; 灵敏的

英文释义：able to think clearly; intellectually active

必考短语

(1)orange alert橙色预警

(2)be alert to警惕; 保持警觉; 应留意

考纲分布

近9年出现13次

重要程度: 5星

85%; v/adj 提醒注意; 使意识到; 意识到

8%; adj/un/v 警戒的; 警戒状态; 使警戒

8%; cn 警报

0%; adj/n 机灵的; 灵敏的

考纲释义

( 1)v/adj. 提醒注意; 使意识到; 意识到

英文释义：make someone aware of something; \naware of something, especially a problem or danger

真题例句：

In 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat from another satellite.

空军在2016年不得不向卫星拥有者发出3,995,874条警告，提醒他们附近另一颗卫星的潜在威胁。[2019年 CET6 阅读理解]

For example, fear can alert us to possible danger.

例如，恐惧可以提醒我们可能的危险。[2016年 CET6 听力]

Their behaviors—drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school—can alert parents and teachers that serious problems are brewing.

他们的行为——酗酒、使用非法药物、吸烟和逃学——可以提醒家长和老师，严重的问题正在酝酿之中。[2016年 CET6 阅读理解]

To alert American workers to the urgency for adaptation.

提醒美国工人适应的紧迫性。[2016年 CET6 阅读理解]

( 2)adj/un/v. 警戒的; 警戒状态; 使警戒

英文释义：quick to notice any unusual and potentially dangerous or difficult circumstances; \na situation in which people are watching for danger and ready to deal with it; \nwarn someone about a dangerous or urgent situation

真题例句：

In 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat.

2016年，空军不得不向卫星所有者发出3995874次警告，提醒他们附近存在潜在威胁。[2019年 CET6 阅读理解]

Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed.

一项研究显示，当你在一个新的地方睡觉时，你的一半大脑保持警觉，为危险做好准备。[2017年 CET6 阅读理解]

The researchers explained that the study demonstrated when we are in a novel environment the brain partly remains alert so that humans can defend themselves.

研究人员解释说，这项研究表明，当我们处于一个新的环境中时，大脑部分保持警惕，以便人类能够保护自己。[2017年 CET6 阅读理解]

( 3)cn. 警报

英文释义：a warning of danger or of a problem

真题例句：

Paris prosecutor Remy Heitz said that an initial fire alert was sounded at 6:20 pm on Monday evening but no fire was found.

巴黎检察官Remy Heitz表示，周一晚上6点20分发出了最初的火灾警报，但没有发现火灾。[2021年 CET6 阅读理解]

The second alert was sounded at 6:43 pm, and the blaze was discovered on the roof.

第二次警报于下午6:43响起，在屋顶上发现了大火。[2021年 CET6 阅读理解]

( 4)adj/n. 机灵的; 灵敏的

英文释义：able to think clearly; intellectually active

必考派生词

alertness n. 机敏；警戒

考纲分布

近16年出现4次

重要程度: 4星

75%; adj 机警的; 警惕的

25%; v 使警觉; 提醒

0%; n 警报

考纲释义

( 1)adj. 机警的; 警惕的

英文释义：quick to see, understand, and act in a particular situation

真题例句：

Stay alert to serious symptoms, such as chest pain, severe shortness of breath or dizziness, or faintness, and seek medical attention immediately.

对严重症状保持警惕，如胸痛、严重气短、头晕或昏厥，并立即就医。[2022年 英语二 阅读理解B]

( 2)v. 使警觉; 提醒

英文释义：make someone aware of something; \naware of something, especially a problem or danger

真题例句：

Jealousy and anger, for example, may have evolved to alert us to important inequalities.

例如，嫉妒和愤怒可能是为了提醒我们注意重要的不平等现象而进化的。[2019年 英语二 阅读理解A]

( 3)n. 警报

英文释义：a warning to people to be prepared to deal with something dangerous

必考短语

(1)alert to警觉

用法讲解

alert常用作表语，后接介词in或to，表示“对...保持警惕”。例： Schools need to be constantly alert to this problem. 各学校对此问题应该始终保持警惕。

alert是及物动词，常接名词或代词作宾语；alert也接双宾语，其直接宾语多为that引导的从句。alert还可接以动词不定式充当补足语的复合宾语。例： We will alert operating personnel to repair. 我们将通知操作人员去维修。

(1)Quarter alert! Quarter alert!

投币了! 投币了!《Wreck-It Ralph》《无敌破坏王》

(2)FBI was on high alert. They investigated every threat. Calm down.

联调局之前高度戒备，他们调查每个威胁，冷静。《House of Cards Season 5》《纸牌屋 第五季》

(3)My fear of him keeps me alert. Tending to his needs gives my life purpose.

对他的恐惧让我时刻保持警惕，要满足他的各种需要，也让我有点事做。《Life of Pi》《少年派的奇幻漂流》

(4)All very interesting, Sherlock, but the terror alert has been raised to critical.

都很有意思，夏洛克，但恐怖袭击预警等级已达到"危急"。《Sherlock Season 3》《神探夏洛克 第三季》

(5)We have an unsanctioned departure from bay two. Alert General Hux. And stop that fighter.

第二停机场有一架战机未经许可起飞。通知赫克斯将军 并阻止那艘战机。《Star Wars: The Force Awakens》《星球大战7：原力觉醒》

(6)Wow. Okay, dude, alert. And who is this guy? Mike Gandolf Ganderson, only like the funnest guy in the world.

好吧，兄弟，请注意，这个人是谁？麦克甘道夫，世界上最爆笑的人。《Friends Season 4》《老友记 第四季》

(7)Civilians. Hundreds of them. We can save their lives. I'll phone Denniston's office so that he can alert the Admiralty.

人们。成百上千的民众，我们可以拯救他们。我要打电话到丹尼斯顿的办公室，他可以告诉海军部。《The Imitation Game》《模仿游戏》

(8)Is it possible your blood sugar was low? I was rested, alert and completely aware of my surroundings.

你的血糖有可能偏低吗？我精神饱满，思维敏锐，对周围环境了如指掌。《Sully》《萨利机长》

(9)They have another 10 months on their trip home. Space travel is dangerous, they need to be alert and undistracted.

他们还有10个月的航程回家，太空旅行很危险，他们需要警觉且不能分心。《The Martian》《火星救援》

(10)So, let's go learn how hydroelectric power might not be the environmental bargain you think it is. Sorry. Spoiler alert.

所以，我们就去看看水力发电，也许不是你想的那么环保。抱歉，剧透了。《The Big Bang Theory Season 5》《生活大爆炸 第五季》

(11)As you can tell, I am alert, extroverted, affable and articulate. Of course. And not to mention devilishly handsome. Not to mention?

你也能看出，我机敏，外向，亲切，思维清晰，当然了，更不用提如此帅气逼人。真的不是故意提到嘛？《Like Sunday, Like Rain》《如晴天，似雨天》

(12)If people buy what you're saying, they will buy what you're selling. Max, stay alert. This could go to cult like that.

如果人们愿意对你说的话买账，他们也会对你推销的东西买账。麦克斯，提高警戒，一不小心这就变邪教了。《2 Broke Girls Season 4》《破产姐妹 第四季》

(13)Oh, good! Okay, yes, I'm gonna do that. I'm calling him. If it helps, I can alert my magician contacts in Vegas.

好，我这就找他，我打给他。要是有用，我可以找我在赌城的魔术师朋友。《Modern Family Season 6 》《摩登家庭 第六季》

(14)Sensor alert. Front door. Please state your name. Colonel Hyrum Graff, Director of Training, International Fleet. This is my colleague, Major Anderson. May We?

传感器报警，前门，请告知您的姓名。希伦·格拉夫上校，国际舰队训练部主管，这是我的同事安德森少校，我们能进来吗？《Enders Game》《安德的游戏》