alert
更新时间:2026-07-06 04:11:06 栏目: 英语词典
更新时间:2026-07-06 04:11:06 栏目: 英语词典
英 [əˈlɜːt];美 [əˈlɜːrt]
形容词:警觉的;警惕的;机灵的。形容人或动物处于一种能够快速察觉危险、变化等情况的状态。
名词:警报;警戒;警示。通常指用于提醒人们注意危险或重要情况的信号或状态。
动词:向…报警;使警觉;使意识到。表示让某人知道有潜在的危险或重要事情发生。
Drivers should always be alert when they are on the road.(司机在路上时应该始终保持警觉。)
The security guard is very alert and notices any unusual movement.(保安非常警觉,能注意到任何不寻常的动静。)
The emergency alert woke everyone up in the middle of the night.(紧急警报在半夜把所有人都吵醒了。)
The teacher alerted the students to the upcoming exam.(老师提醒学生们即将到来的考试。)
The dog remained alert, watching the stranger closely.(狗一直保持警觉,紧紧盯着那个陌生人。)
They issued a tornado alert for the area.(他们为该地区发布了龙卷风警报。)
Parents should alert their children to the danger of talking to strangers.(家长应该让孩子们意识到和陌生人交谈的危险。)
The alert tone on my phone indicates a new message.(我手机上的提示音表示有新消息。)
The soldiers were on high alert during the border crisis.(在边境危机期间,士兵们处于高度戒备状态。)
The lifeguard is always alert to the safety of the swimmers.(救生员始终密切注意着游泳者的安全。)
口语运用
日常提醒:在生活中提醒他人注意某种潜在情况。例如:“Mom, please alert me when the water in the kettle boils.(妈妈,水壶里的水开了请提醒我。)”
描述状态:和朋友聊天时描述某人或自己的警觉状态。比如:“I'm always alert when I walk alone at night.(我晚上独自走路时总是很警觉。)”
写作运用
记叙文写作:在描述事件过程中,用于刻画人物对危险的反应。例如:“As soon as the suspicious figure appeared, the detective became alert and followed him cautiously.(可疑人物一出现,侦探就警觉起来,小心翼翼地跟踪他。)”
说明文写作:介绍安全措施或某种预警机制时使用。比如:“The new security system can send alerts to the property owner immediately when there is an intrusion.(当有入侵情况时,新的安保系统能立即向业主发送警报。)”
学习积累
搭配记忆:记住 “alert” 常见的搭配,如 “be alert to(对……警觉)”“issue an alert(发布警报)”“on alert(处于戒备状态)” 等,通过背诵例句来掌握这些搭配的用法。
情景模拟:和同学一起创设各种需要使用 “alert” 的情景,如火灾、盗窃等场景,进行对话练习,在实际情境中巩固词汇的运用。