warn：

　　v. 提醒注意(可能發(fā)生的事);使警惕;勸告(使有所防備);警告;告誡

　　第三人稱(chēng)單數： warns

　　現在分詞： warning

　　過(guò)去式： warned

　　過(guò)去分詞： warned

　　例句：

　　The computer is programmed to warn users before information is d.

　　這臺計算機編程時(shí)已設計在信息刪除前提醒用戶(hù)。

　　People were swimming in the ocean despite the hurricane warning.

　　盡管有颶風(fēng)警報，人們仍然在大海里游泳。

　　She was warned that if she did it again she would lose her job.

　　她被警告說(shuō)如果她再這樣做就會(huì )丟掉工作。

　　He called out a warning from the kitchen.

　　他在廚房里大聲發(fā)出警告。

　　She had ignored the warning signs of trouble ahead.

　　她沒(méi)有理會(huì )警示前方危險的標志。

　　Doctors issued a warning against eating any fish caught in the river.

　　醫生發(fā)出警告不要吃在那條河里捕的魚(yú)。