词汇搭配

用作形容词 (adj.)

～+名词

alert mind反应敏捷的头脑

alert movements敏捷的动作

～+副词

alert mentally思想上警惕

～+介词

alert in answering questions留心回答问题

alert to随时注意

alert to every sound and movement对任何响动都很警觉

用作动词 (v.)

～+名词

alert the public提醒公众

～+副词

alert amazingly吃惊地警告

alert cautiously小心地警告

alert extremely完全地警告

alert guardedly谨慎地警告

alert resolutely绝对地警告

alert sharply尖锐地警告

alert wisely聪明地警告

～+介词

alert to the danger提醒注意其危险性

alert to the need提醒注意其必要性

用作名词 (n.)

动词+～

call an alert发出警报

sound the alert拉响警报

call off an alert取消警戒状态

go on alert进入戒备

形容词+～

24-hour alert昼夜警戒

active alert战斗警报

blue alert空袭警报

false alert假警报

full alert全面戒备状态

general alert全面警戒

No 1 alert一级战备

preliminary alert预备警报

red alert紧急警报

white alert解除警报

yellow alert预备警报

名词+～

air alert空袭警报

ground alert地面待战

malfunction alert故障报警

nuclear alert核警报

介词+～

during an alert在警戒期间

in state of alert处于警戒状态

～+介词

the alert against any possible aggression警惕任何可能的侵略

the alert for any indications of battle注意任何战事的迹象

词组短语

alert someone to sth

使...警觉；使...警惕

on the alert

提防；警戒著；随时准备著

red alert

紧急警报，红色警报；应急状况

同近义词辨析

cautious, considerate, alert

这组词都有“小心的，谨慎的”的意思，其区别是：

cautious

a.细心的，谨慎的。

He has a cautious attitude about spending money.在花钱的问题上他态度谨慎。

considerate

a.关心他人的，体贴的。

He is always considerate of others; he is kind and sympathetic.他总是很体谅他人，并且慈祥而富有同情心。

alert

a.警惕的，留神的。

The hostess remained standing, alert to every guests' drinking need.女主人一直站在旁边，时刻准备给大家斟酒。

双语例句

用作形容词(adj.)

The alert leopard went up to a deer quietly.
警觉的豹子静悄悄地走近一只鹿。
Although he's over eighty his mind is still remarkably alert.
他虽已年过八十，但头脑仍然十分机敏。

用作及物动词(vt.)

I must alert him to the need to solve the problem.
我必须使他认识到解决这问题的必要性。
But we must remain on the alert.
但是我们现在仍然要保持警惕。
He decided he would stay more alert from now on.
他决定从现在起要更提高警惕了。

用作名词(n.)

Troops are on the alert against any possible aggression.
军队戒备着可能的来犯。
One should not run about aimlessly during an alert.
空袭警报期间不可到处乱跑。

权威例句

How dying cells alert the immune system to danger.

NHLI BARI clinical alert on diabetics treated with angioplasty

Antitrust Alert: ACCC Pushes for General Safety Provision on Sale and Marketing of Products

Compliance Alert: Guidelines on Product Oversight and Governance Arrangements for Retail Banking Products

Eye movements evoked by collicular stimulation in the alert monkey

A study on application of BacT/ALERT 3D liquid culture technology on tuberculosis drug resistance detection

Design and Fabrication of Detector Module for UFFO Burst Alert & Trigger Telescope

Neuronal responses to static texture patterns in area V1 of the alert macaque monkey.

ACCF/AHA Clopidogrel Clinical Alert: Approaches to the FDA “Boxed Warning” A Report of the American College of Cardiology Foundati...

Pittsburgh Police Officers Responding to an Alert from the City’s Gunshot Detection System in July Found an 18-Year-Old Woman Shot ...