alert作形容词的基本意思是什么？

alert作形容词的基本意思是什么?alert作形容词的基本意思是“警惕的,警觉的,注意的”,指特别留神以应付可能发生的事,尤指危险的事; 引申也可指“机灵的,敏捷的”,指思维敏捷,理解快,可用来形容人,也可用来形容物。alert常用作表语,后接介词in或to,偶尔也可用作定语。

(动词)

alert的基本意思是指让某人对可能发生的危险或潜在的危险保持警觉或准备好迎击敌人,可译作“(向)…发出警告,使处于戒备状态”。

alert是及物动词,提醒、警觉或戒备的内容常由介词to引出,提醒作为准备的内容则由介词for引出。

alert也接双宾语,其直接宾语多为that引导的从句。alert还可接以动词不定式充当补足语的复合宾语。

常用作定语形容词，如analertman或hisalertattention;

作为动词时，alert的宾语后可接that从句。

The villagers alerted the traveller that wolves might come out in the night.

常见句型

用作形容词 (adj.)

用作定语

He has an alert mind.

他很机灵。

The alert listener will have noticed the error.

耳朵尖的人能听出这个错。

n. +～

He is a man alert in problem.

他是个留意问题的人。

用作表语

Our guerrillas suddenly became alert as the dogs barked.

狗叫了,我们的游击队员突然警觉起来。

The rabbit seems to be very alert all its life.

兔子似乎一生都小心翼翼,十分警觉。

S+be+～+ prep. -phrase

Be alert for any sign of change in the patient.

对这个病人的病情变化要密切注意。

The student is alert in answering the question.

这个学生回答问题小心谨慎。

A monkey is very alert in its movements.

猴子的动作很敏捷。

S+be+～+(that-)clause

So alert she was that not a single error in the report slipped her.

她十分警觉,所以报告中没有一个错能逃过她的眼睛。

用作动词 (v.)

用作及物动词

The voice of the caller alerted her.

呼唤者的声音使她警觉起来。

Sirens alerted the cities long before the enemy bombers arrived.

敌军轰炸机凌空以前,各城市早已鸣了警报。

They alert the public to the need for pollution control.

他们提醒公众注意控制污染的必要性。

He had phoned the nearby villages, alerting them to the possibility of forest fires.

他给附近几个村庄打了电话,叫人们注意森林可能起火。

用作双宾动词

The boss alerted the guard that thief might come out at night.

老板要警卫提防夜里可能有贼。

The villagers alerted the traveller that wolves might come out in the night.

村民们叫旅行者提防,夜晚有狼群出没。

用作宾补动词

The radio alerted coastal residents to prepare for the hurricane.

电台警告沿海居民做好预防飓风的准备。

We will alert operating personnel to repair.

我们将通知操作人员去维修。

其他

There are hurricane warning systems for alerting island residents.

现在有了向岛上居民发出飓风警报的警报系统。

用作名词 (n.)

A national police alert was in effect.

全国警察实行戒备。

The hurricane alert is over.

飓风警报解除了。

The air-raid alert sounded at noon.

正午时响起了空袭警报。