v.

notify of danger, potential harm, or risk

"The director warned him that he might be fired"; "The doctor warned me about the dangers of smoking"

admonish or counsel in terms of someone's behavior

"I warned him not to go too far"; "I warn you against false assumptions"; "She warned him to be quiet"

同義詞：discourageadmonishmonish

ask to go away

"The old man warned the children off his property"

notify, usually in advance

"I warned you that I would ask some difficult questions"

1. She warned me about the dangers of walking alone at night.
   她警告我夜晚獨自行走的危險。
2. The teacher warned the students to be careful during the experiment.
   老師警告學生們在實驗過程中要小心。