1. to warn someone of danger or a problem
警告（某人）有危險或問題
The alarm alerted the security guard to the break-in.
警報器向保安人員發出有入室盜竊的警告。
The weather service alerted residents about the approaching typhoon.
氣象局向居民發出了颱風逼近的警報。
Alert Meaning（定義、用法、例句與發音）
alert
verb
快速理解
What does "Alert" mean?What are 2-3 core uses of "Alert"?
作為動詞，alert 意指發出警告或提醒，使某人注意潛在的危險或重要情況。
- 1
警告危險
EN: to warn someone of a dangerous or urgent situation
翻譯: 警告（某人）有危險或緊急情況
- 2
通知提醒
EN: to make someone aware of or inform them about something important
翻譯: 提醒（某人）注意或告知重要事情
- 3
使警覺
EN: to cause someone to be watchful and ready
翻譯: 使（某人）保持警覺並做好準備
小提醒：Alert 作動詞時，常用結構是 'alert someone to something'，例如 'alert the public to the risk'（提醒公眾注意風險）。不要與形容詞用法 'be alert'（保持警覺）混淆。
發音（How to Pronounce "Alert" in English）
How to pronounce "Alert" in English?"Alert" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Alert" from YouTube Videos
Embracing otherness, embracing myself | Thandiwe Newton
TED
“All my senses are alert and alive in much the same way as an infant might feel -- that feeling of oneness.”
(1 out of 11)
Definitions（定義）
What are the definitions of "Alert"?How does "Alert" change by context?
2. to make someone aware of something
使（某人）注意到某事
She alerted me to a great opportunity I had missed.
她提醒我注意一個我錯過的好機會。
The article alerted the public to the environmental issue.
這篇文章讓公眾注意到了這個環境問題。
3. to cause someone to become mentally focused and ready
使（某人）精神集中並準備好
The sudden noise alerted his senses.
突如其來的聲響讓他的感官警覺起來。
The coach's speech alerted the team to the importance of the game.
教練的講話讓全隊對比賽的重要性警覺起來。
Grammar & Patterns（句型）
What are common sentence patterns for "Alert"?How to make natural sentences with "Alert"?
| Pattern | Meaning | Example |
|---|---|---|
| alert + someone | 提醒某人 | The app will alert you when the package arrives. (包裹送達時，應用程式會提醒你。) |
| alert + someone + to + something | 提醒某人注意某事 | The guard alerted the police to the suspicious activity. (警衛提醒警方注意可疑活動。) |
| be alerted + to + something | 被提醒注意某事 | Residents were alerted to the approaching storm. (居民們被提醒注意即將來臨的暴風雨。) |
| alert + someone + that + clause | 提醒某人… | The doctor alerted her that she needed more rest. (醫生提醒她需要更多休息。) |
用法說明
How is "Alert" different from similar structures?What usage mistakes are common with "Alert"?
alert someone to something vs alert someone that
- alert someone to + noun/noun phrase 用於指出一個具體的危險、問題或情況。介系詞
to後面通常接一個「事物」，例如danger（危險）、problem（問題）、possibility（可能性）。 - alert someone that + clause 用於告知某人一個完整的訊息或事實。連接詞
that後面接一個完整的子句，說明具體發生了什麼事或將要發生什麼事。 - 兩者常可互換，但
alert to更強調「引起對某事物的注意」，而alert that更強調「告知一個具體訊息」。 EN: The system alerted the engineers to a potential overload. 翻譯: 系統向工程師發出了潛在超載的警報。
EN:The system alerted the engineers that the server was overheating.
翻譯:系統向工程師發出警報，告知伺服器過熱。
EN:She alerted the manager to the security breach.
翻譯:她向經理通報了安全漏洞一事。
EN:She alerted the manager that someone had accessed the confidential files.
翻譯:她通報經理，有人存取過機密檔案。
總結建議
一般情況下，若要指出具體的「問題或事物」用 alert someone to something，若要傳達完整的「訊息或事實」則用 alert someone that + 子句。
易混淆對比
What is the difference between "Alert" and similar words?How to choose "Alert" vs alternatives?
alert vs warn
「alert」通常指提供資訊或引起注意，可能是中性或積極的；「warn」則帶有強烈的警告意味，暗示危險或負面後果。
alert vs notify
「alert」通常暗示情況緊急或需要立即關注；「notify」則較為正式、一般，僅指傳達資訊。
alert vs inform
「alert」強調快速引起對特定、通常緊急情況的注意；「inform」範圍更廣，指一般性地提供資訊或知識。
口語用法
How is "Alert" used in spoken English?What is the spoken vs formal difference for "Alert"?
引述
在口語中，常用來轉述或強調他人已發出的警告或提醒。 EN: He alerted me to the deadline change yesterday. 翻譯: 他昨天就提醒我截止日期改了。
EN:Did anyone alert you about the meeting being cancelled?
翻譯:有人通知你會議取消了嗎？
語氣強調
常與副詞連用，強調提醒的即時性或重要性，語氣比單純說 "tell" 或 "inform" 更強烈。 EN: I need to alert you immediately—there's been a security breach. 翻譯: 我得立刻通知你—有安全漏洞。
EN:She quickly alerted the whole team to the client's last-minute request.
翻譯:她迅速提醒了整個團隊客戶臨時提出的要求。
停頓填充
在組織語句時，有時會用 "alert someone to the fact that..." 作為緩衝，引出後續的具體情況或問題。 EN: I should alert you to the fact that the budget has been cut. 翻譯: 我應該提醒你，預算已經被削減了。
EN:We were alerted to the possibility that the data might be incomplete.
翻譯:我們被告知資料可能不完整。
正式書寫注意：在正式報告或書面文件中，"alert" 作為動詞有時會顯得口語化。可考慮使用更正式的替代詞，如 "notify", "advise", "apprise of", 或 "bring to one's attention"。
常見短語
What common collocations use "Alert"?What fixed phrases with "Alert" should I remember?
alert someone to something
alert [sb] to [sth]
提醒某人注意某事；使某人警覺到某事
alert the authorities
alert the authorities
通知當局；向主管機關通報
alert the police
alert the police
報警；通知警方
alert staff
alert staff
通知員工；提醒工作人員
alert the public
alert the public
向公眾發出警報；提醒大眾
fail to alert
fail to alert
未能提醒；沒有發出警報
immediately alert
immediately alert
立即通知；馬上警報
alert via
alert [sb] via [method]
透過某種方式通知（某人）
常見錯誤
What are common mistakes with "Alert"?Which "Alert" sentences look correct but are wrong?
×The system alerted me about the problem.
✓The system alerted me to the problem.
「alert」作為動詞時，表示「警告、提醒」某人某事，通常搭配介系詞「to」來引出具體的問題或危險，而不是「about」。
×I will alert you when the food will be ready.
✓I will alert you when the food is ready.
在時間副詞子句（如 when、before、after 引導的子句）中，即使主句是未來式，子句也應使用現在式來表示未來。因此應使用「is ready」，而非「will be ready」。
×She alerted that the meeting was cancelled.
✓She alerted everyone that the meeting was cancelled.
「alert」作為及物動詞時，必須有受詞（即被提醒的對象）。不能直接接「that」子句，必須先說明提醒了「誰」。
×He alerted the police for the suspicious activity.
✓He alerted the police to the suspicious activity.
向某人警告或通報某事，正確的介系詞搭配是「alert someone to something」，而不是「for」。
×Please alert me immediately when you will arrive.
✓Please alert me immediately when you arrive.
與錯誤 2 類似，在「when」引導的時間副詞子句中，應用現在式代替未來式。這是英文時態的一致性規則。
×The smoke detector alerted and we evacuated.
✓The smoke detector went off and we evacuated. / The smoke detector alerted us and we evacuated.
「alert」作為動詞時，通常需要一個受詞（被提醒的對象）。描述警報器「響起」或「觸發」的常見動詞片語是「go off」。若要使用「alert」，則需補上受詞（如 us）。
詞形變化
What are the word forms of "Alert"?What are tense/participle forms of "Alert"?
alerts(3rd_singular)alerting(present_participle)alerted(past)alerted(past_participle)