✨ 语义深度解析
alert
高考核心词 作文加分词 难度 2/5 ⏱ 3 分钟
核心
主动警觉——随时准备好应对危险或变化
释义
1
adj.警觉的,机敏的
Drivers must remain alert at all times, particularly on long motorway journeys where fatigue can set in quickly.
司机必须时刻保持警觉,尤其是在长途高速行驶中,疲劳会迅速出现。
2
v.使警觉,提醒(alert sb. to sth.)
The whistleblower alerted the authorities to serious safety violations occurring at the factory.
这名举报人向当局发出了警示,指出工厂存在严重的安全违规行为。
3
n.警戒状态,警报
Following the threat, security forces were placed on high alert across the entire region.
威胁发出后,安全部队在整个地区进入高度戒备状态。
语感
alert = 主动警觉——be alert to(对…保持警觉);alert sb. to(提醒某人注意);on alert(处于戒备)
警觉的,机敏的(形容词)使警觉,提醒(动词)警戒状态,警报(名词)
陷阱
⚠️be alert to(介词 to,非 of 或 about)
Parents should be alert of the signs of cyberbullying so they can intervene early if their child is affected.
家长应警觉网络欺凌的迹象,以便在孩子受到影响时及早介入。(× alert of → ✓ alert to)
be alert to 是固定搭配(对…保持警觉),介词用 to;× alert of → ✓ alert to
Parents should be alert to the signs of cyberbullying so they can intervene early if their child is affected.
家长应对网络欺凌的迹象保持警觉,以便在孩子受到影响时及早介入。
⚠️alert vs. aware:主动警戒 vs. 知道
The campaign aims to make young people more aware of the health risks associated with excessive sugar consumption.
aware of = be alert to(意识到危险 = 对危险保持警觉,两者一样)
aware of(知道,意识到某事实:be aware of the risks = 知道这些风险存在,偏认知层面);alert to(主动警觉,随时准备应对:be alert to the risks = 对风险时刻保持防备,含行动准备义);此句是「让年轻人了解健康风险」(认知目的),用 aware of 更准确;若是「让医护人员时刻防备」,则用 alert to
该运动旨在让年轻人更充分地了解过量摄入糖分的健康风险。(aware of = 知道/意识到;alert to = 主动警戒,有防备行动义)
近义辨析
alert vs vigilant
alert alert(警觉的,主动准备应对危险,形容当下状态) vigilant vigilant(警惕的,强调持续、不松懈地保持警觉,书面正式)
Security staff must stay alert throughout their shift, as suspicious activity can occur at any time.
安保人员必须在整个班次中保持警觉,因为可疑活动随时可能发生。
Citizens are urged to remain vigilant and report any unattended packages to the authorities immediately.
市民被敦促保持警惕,并立即向当局报告任何无人看管的包裹。
写作加分
✨ 加分词
替换:carefulwatchfulpay attention to
公共安全话题健康议论文环境风险话题
普通
We should be careful about the dangers of social media.
我们应该注意社交媒体的危险。
加分 ✨
Young people must remain alert to the potential risks of social media, including privacy breaches, cyberbullying, and the spread of misinformation.
年轻人必须对社交媒体的潜在风险保持警觉,包括隐私泄露、网络欺凌和虚假信息的传播。
常用搭配
be alert to sth.对某事保持警觉(介词 to)
stay / remain / keep alert保持警觉
alert sb. to sth.提醒某人注意某事(动词)
on (high) alert处于(高度)戒备状态(名词)
a security / terror alert安全 / 恐怖警报
词根
alert = al(all 全体)+ ert(ert 联想 expert 专家)→ 全体专家都在盯着 = 高度警觉;be alert to(介词 to,盯着某方向)
考考你
Q1对错判断
判断下面句子里的用法是否正确:
Travellers in tropical regions should be alert of mosquito-borne diseases and take appropriate preventive measures.
✓ 正确版本
Travellers in tropical regions should be alert to mosquito-borne diseases and take appropriate preventive measures.
前往热带地区的旅行者应对蚊媒疾病保持警觉,并采取适当的预防措施。
be alert to 是固定搭配(对…保持警觉),介词用 to;× alert of → ✓ alert to
Q2近义选词
选择最恰当的词填空:
The neighbourhood watch scheme encourages residents to remain ___ and report any suspicious activity to the police.
Aalert
Bvigilant
✓ 邻里守望计划鼓励居民保持警惕,并向警方报告任何可疑活动。
此句强调社区长期、持续的安全警觉行为,用 vigilant(持续不松懈的警惕)更准确;alert 描述当下警觉状态,vigilant 更强调长期坚持
Q3搭配还原
选择正确的搭配,完成句子:
The new reporting system will ___ local authorities to any significant changes in air quality levels.
新的报告系统将提醒地方当局注意空气质量水平的任何重大变化。
Aalert
Balarm
Cwarn
Dnotice
完整搭配:alert sb. to sth. 提醒某人注意某事(动词用法)
alert sb. to sth.(提醒某人注意某事)是固定动词搭配;alarm(使惊恐,触发警报);warn(警告,强调危险);notice 是不及物动词,不接双宾语结构
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