warn的句子及用法~

warn的句子及用法~
warn的句子及用法~

warn的句子及用法~
warn sb.of sth.
eg. I shouted to him to warn him of the danger.
warn sb.that
eg.The driver's signal warned us that he was going to turn left.
warn sb.(not) to do sth.
eg. I warn you not to go out alone at night.
warn sb. against doing sth.
eg. The police warn teenagers against engaging in sucn illegal activity.

warn sb to do sth提醒某人做某事
warn sb not to do sth 警告某人别做某事