Word · Frequency #4966
alert
警觉的；警惕的；注意的
核心释义
Attentive, awake, and ready to notice danger or opportunities.
- 1.
警觉的；清醒的；警惕的
Attentive; awake; on guard.
警觉的；清醒的；警惕的；警觉的；灵敏的；留心的
用法In use
The guard remained alert throughout the night, watching for any unusual activity.
用法提示：形容词作表语，表示保持警觉状态。
You need to be alert when driving in heavy rain.
用法提示：形容词作表语，强调在特定情况下需保持警觉。
A good student is always alert in class, ready to answer questions.
用法提示：形容词作表语，描述学生精神状态，意为“留心的”。
be alert to sth
alert to 后接需要警惕的对象。
Drivers should be alert to pedestrians crossing the road.
司机应该对过马路的行人保持警觉。
stay/remain alert
stay/remain alert 强调保持警觉状态，不接宾语。
相关词与表达Connections
搭配Collocations
- stay alert
- 保持警觉
- Please stay alert while driving at night.夜间开车时请保持警惕。
- be alert to
- 对…保持警觉
- Investors should be alert to market changes.投资者应对市场变化保持警觉。
- be alert for
- 警惕…
- Be alert for pickpockets in crowded areas.在拥挤的地方要警惕扒手。
- mentally alert
- 思维敏捷的
- Puzzles help keep you mentally alert.解谜有助于保持思维敏捷。
- fully alert
- 完全清醒的
学习提示Learner notes
记忆技巧Memory Tip
alert 开头 a 像人竖起耳朵，听到风吹草动立刻清醒警觉。
语境与语域Context & Register
语域：neutral 常见场景：安全提示、日常提醒、正式警告 作形容词时表示“警觉的、警惕的”，语气中性；通常用于 stay/be alert (for/to) 等搭配，在安全提示、日常提醒和正式警告中都比较常见。
语法说明Grammar Note
常与to连用，表示'对……警觉'；后接that从句。
发音与拼写Pronunciation & Spelling
These words rhyme with alert's stressed /ɝt/ ending: hurt, blurt, curt, assert, convert, dessert. Beware lookalikes such as alter and altar (both /ˈɔːltər/) and alley (/ˈæli/), which have similar spellings but sound completely different.
用法优先级Usage priority
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.