(例句] He has been warned of danger of driving after drinking wine.他已被提醒过酒后开车危险。
(例句] l shouted to him to warn him of the danger.
我大声叫他警告他有危险。
warn sb. against doing sth.警告某人不要做某事[例句] They warned him against swimming in that river .
他们警告他不要到那个河里游泳。
[例句] The doctor warned the patient against smoking.
医生告诫病人不要抽烟。
