短语搭配

1. n. orange alert

橙色预警

2. be alert to

警惕；保持警觉；应留意

3. vphr. 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 alert

24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

双语例句

1. 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。

2. The government issued an alert for a potential terrorist threat.

政府发布了潜在恐怖威胁的警报。

3. The bank's system triggered an alert due to suspicious activity.

由于可疑活动，银行系统触发了警报。

4. 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。

5. The fire department issued an alert about the wildfire.

消防部门发布了关于野火的警报。

6. 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。

7. The security alert brought the airport to a standstill.

安全警戒使机场陷入停顿状态。

8. The security system triggered an alert when it detected movement.

安全系统在检测到移动时触发了警报。

9. The bank is alert to the danger.

该银行对这种危险有警觉。

10. We all have to stay alert.

我们都必须保持警觉。

11. 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。

12. The app sends an alert when your battery is low.

当你的电池电量低时，应用程序会发送警报。

13. The emergency alert was relayed to all residents.

紧急警报被转发给了所有居民。

14. Two alert scientists spotted the mistake.

两个警觉的科学家发现了这个错误。

15. The weather service issued an alert for severe thunderstorms.

气象服务发布了严重雷暴的警报。

16. This motion detector will alert when someone passes by.

这个运动检测器会在有人经过时发出警报。

17. Her whole bearing was alert.

她整个人保持着戒备状态。

18. A modal alert will appear if you enter incorrect information.

如果你输入错误信息，将会出现模态警报。

19. The fire alert went off in the middle of the night.

半夜时火灾警报响了。

20. But her prey are always on high alert.

但她的猎物时刻保持高度机警

近义词

1. vt. 警告；使警觉，使意识到

2. adj. 警惕的，警觉的；留心的

3. n. 警戒，警惕；警报

反义词

1.

同根词

词根 alert

(1)alertly adv.留意地；提高警觉地

(2)alertness n.警戒；机敏

考纲分布

近15年出现1次 重要程度

200% n 警报

0% adj 警觉的

0% vt 向…报警; 使意识到

考纲释义

考纲分布

近12年出现18次 重要程度

44% adj/un/v 警戒(的); 使警戒

22% v/adj (使)意识到

17% n 警报

17% n 警戒期

0% adj/n 机灵的; 灵敏的

考纲释义

1. adj/un/v. 警戒(的); 使警戒(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)

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(make someone aware of something; \naware of something; especially a problem or danger)

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(a warning of danger or of a problem)

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]

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12年出现13次 重要程度

46% v/adj 提醒注意; 使意识到; 意识到

46% 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(make someone aware of something; \naware of something, especially a problem or danger)

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(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)

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(a warning of danger or of a problem)

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]

必考派生词

alertness n. 机敏；警戒

考纲分布

近18年出现4次 重要程度

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(quick to see, understand, and act in a particular situation)

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(make someone aware of something; \naware of something, especially a problem or danger)

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]

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。