基本解釋adj.警覺的；靈敏的vt.使意識(shí)到；警惕n.警戒；警報(bào)詞源解說 17世紀(jì)進(jìn)入英語，直接源自法語的alerte，意為vigilant；最初源自意大語的allerta，意為到高處。同根派生 alerts相關(guān)詞用法辨析adj. (形容詞)alert作形容詞的基本意思是“警惕的,警覺的,注意的”,指特別留神以應(yīng)付可能發(fā)生的事,尤指危險(xiǎn)的事; 引申也可指“機(jī)靈的,敏捷的”,指思維敏捷,理解快,可用來形容人,也可用來形容物。 alert常用作表語,后接介詞in或to,偶爾也可用作定語。 v. (動(dòng)詞)alert的基本意思是指讓某人對(duì)可能發(fā)生的危險(xiǎn)或潛在的危險(xiǎn)保持警覺或準(zhǔn)備好迎擊敵人,可譯作“(向)…發(fā)出警告,使處于戒備狀態(tài)”。 alert是及物動(dòng)詞,提醒、警覺或戒備的內(nèi)容常由介詞to引出,提醒作為準(zhǔn)備的內(nèi)容則由介詞for引出。 alert也接雙賓語,其直接賓語多為that引導(dǎo)的從句。alert還可接以動(dòng)詞不定式充當(dāng)補(bǔ)足語的復(fù)合賓語。 常用作定語形容詞，如an alert man或his alert attention； 作為動(dòng)詞時(shí)，alert的賓語后可接that從句。The villagers alerted the traveller that wolves might come out in the night.alerts使用方法alerts詳細(xì)辨析英漢例句用作形容詞 (adj.)用作定語: ～+ n.He has an alert mind.他很機(jī)靈。n. +～He is a man alert in problem.他是個(gè)留意問題的人。用作表語: S+be+～Our guerrillas suddenly became alert as the dogs barked.狗叫了,我們的游擊隊(duì)員突然警覺起來。S+be+～+ prep. -phraseBe alert for any sign of change in the patient.對(duì)這個(gè)病人的病情變化要密切注意。S+be+～+(that-)clauseSo alert she was that not a single error in the report slipped her.她十分警覺,所以報(bào)告中沒有一個(gè)錯(cuò)能逃過她的眼睛。用作動(dòng)詞 (v.)用作及物動(dòng)詞: S+ ～+n./pron.The voice of the caller alerted her.呼喚者的聲音使她警覺起來。用作雙賓動(dòng)詞: S+～+ n./pron. +that-clauseThe boss alerted the guard that thief might come out at night.老板要警衛(wèi)提防夜里可能有賊。用作賓補(bǔ)動(dòng)詞: S+～+ n./pron. +to- vThe radio alerted coastal residents to prepare for the hurricane.電臺(tái)警告沿海居民做好預(yù)防颶風(fēng)的準(zhǔn)備。其他There are hurricane warning systems for alerting island residents.現(xiàn)在有了向島上居民發(fā)出颶風(fēng)警報(bào)的警報(bào)系統(tǒng)。用作名詞 (n.)A national police alert was in effect.全國(guó)警察實(shí)行戒備。alerts更多例句詞組短語用作形容詞 (adj.)～+名詞alert mind 反應(yīng)敏捷的頭腦alert movements 敏捷的動(dòng)作～+副詞alert mentally 思想上警惕～+介詞alert in answering questions 留心回答問題alert to 隨時(shí)注意alert to every sound and movement 對(duì)任何響動(dòng)都很警覺用作動(dòng)詞 (v.)alert the public 提醒公眾alert amazingly 吃驚地警告alerts更多詞組