1. C 警钟，警报器；闹钟　an alarm clock
2. C 警报　 sth that tells you about danger, for example by making a loud noise
3. U 惊恐，忧虑　a sudden feeling of fear

　alarm　用作名词的基本意思是“警钟，报警器，闹钟”，也可作“警报”解，是可数名词；引申可表示“惊恐，恐慌”，是不可数名词。

　activate an ～　开动警报器
　deactivate an ～　关闭警报器
　give an ～　发出警报
　raise an ～　发出警报
　send in an ～　发出警报
　set (off) an ～　开动警报器，拨闹钟
　turn off an ～　关上闹钟
　false ～　虚惊
　great ～　极大的恐慌
　several ～s　好几次警报
　silent ～　无声警报
　air-raid ～　空袭警报
　burglar ～　防盗警报器
　fire ～　火警，防火警报器
　smoke ～　烟警
　～ bell　警铃
　～ call　紧急集合号
　jump up in ～　惊慌地跳了起来
　with ～　恐惧地
　～ at　对…的惊恐

　He is afraid of waking up late, and so he always has an alarm on his bedside table.　他怕醒晚了，总是在床头桌上放一个闹钟。
　Three fire companies answered the alarm.　听到警报后，三个消防队都来了。
　There were several alarms during the night.　夜间有好几次报警。
　He jumped up in alarm.　他惊慌地跳了起来。
　I hope you didn't take alarm at the news.　我希望你听到这消息没有吃惊。

 ♣ alarm, dread, fear, terror
　参见fear条。

1. vt.警告　 give a warning or feeling of danger to
2. vt.使惊慌　 frighten

　～ abruptly　突然地警告
　～ exceedingly　大惊失色
　～ fearfully　可怕地警告
　～ groundlessly　无理由地警告
　～ incessantly　持续不断地警告
　～ sincerely　严肃地警告
　～ seriously　严重地警告
　～ unnecessarily　不必要地警告
　～ vaguely　不清楚地警告
　feel ～ed about the cholera　对霍乱流行产生恐慌
　get ～ed about　对…大惊小怪，对…感到吃惊
　be ～ed at the prospect of　对…前途感到惊恐
　be ～ed at receiving the telegram　因收到电报而惊慌
　be ～ed by　被…吓一跳
　be ～ed by a sudden attack　因受到突然袭击而惊恐万状
　become ～ed over a situation　对形势感到惊慌

　Don't alarm yourself.　不要焦虑不安。
　Alarm everyone quickly, the house is full of smoke.　赶快把大家弄醒，这房子里全是烟。
　I don't want to alarm you, but there's a strange man in your garden.　我不想让你惊慌，但你的花园里有个陌生男人。
　The noise of the shot alarmed them.　枪声惊动了他们。
　The spread of cholera alarmed the whole city.　霍乱流行使全城的人都恐慌起来。
　The sight of smoke alarmed the night porter.　旅馆夜班接待员看到冒烟就惊恐起来。
　The breaking of a branch under my foot alarmed the deer.　我踩断了一根树枝，把那头鹿吓惊了。
　The noise of the shot alarmed hundreds of birds.　枪声惊起了数百只鸟。
　He crossed the river and alarmed the guerrillas.　他过河向游击队报了警。
　The sentry alarmed the sleeping men.　步哨鸣警，惊醒了睡觉的士兵。
　They were alarmed.　他们惊慌起来了。
　I was quite alarmed last night at the cry of "fire".　昨晚我听到喊“着火了”而大为惊恐。
　Everybody was alarmed at the news that war might break out.　大家听到战争可能爆发的消息都很恐慌。
　She was alarmed at the plane crash.　她听到飞机失事而惊惶不安。
　They were much alarmed at seeing the fire.　他们见到这火大为惊恐。
　You should not be alarmed at what you just heard.　你不应为刚才听到的事情而诧异。
　We were much alarmed by a fire in the neighborhood.　邻里的火灾使我们甚感惊慌。
　I am alarmed by your irresponsible attitude.　你这种不负责任的态度使我吃惊。
　He was alarmed over his father's death.　他父亲的死使他惊恐不安。
　He became alarmed over the situation.　他对形势担忧起来。
　He is alarmed for the safety of his younger brother.　他为弟弟的安全担心。
　The enemy commander was alarmed to learn that his troops had been surrounded.　敌军指挥官听说自己的部队已被包围时惊恐万状。
　He is alarmed that you're hospitalized.　他听说你生病住院，感到不安。

　An alarming film was shown in this theatre.　这家影院上映了一部令人恐慌的电影。

 ♣ alarm, amaze, astonish, surprise
　这组词共同的意思是“惊异”“震惊”，它们之间的区别是：
1. surprise语气最强， alarm次之， astonish更次之， amaze最弱。
2. 在使用场合上：surprise指对事出突然或意外而“惊奇”“惊愕”甚至“震惊”; alarm指由于某种危险或不祥之兆而“惊恐”; astonish指事情的发生不可思议而“难以置信”; amaze指对不太可能的事或根本不可能发生的事而感到“迷惑不解”。

　［派生词］ alarmed adj.惊恐的，忧虑的‖alarming adj. （令某人）惊慌的，（令某人）忧虑的
　［同义词］ v. alert, bell, fear, scare
　［反义词］ v. compose