"The director warned him that he might be fired" "The doctor warned me about the dangers of smoking"
"I warned him not to go too far" "I warn you against false assumptions" "She warned him to be quiet"
"The old man warned the children off his property"
"I warned you that I would ask some difficult questions"
误 I warned him leaving at once.
正 I warned him to leave at once.
析 表示“提醒某人做某事”时,可用warn sb to- v 的句型,不可以用warn sb v -ing句型。
