warn

1. V-T/V-I If you warn someone about something such as a possible danger or problem, you tell them about it so that they are aware of it. 警告; 提醒

When I had my first baby friends warned me that children were expensive. 儅我有了第一個孩子時，朋友們提醒我說養小孩是很花錢的。

They warned him of the dangers of sailing alone. 他們警告他獨自航行的重重危險。

He warned of a possibility of a new terrorist attack. 他警告說可能會有一次新的恐怖襲擊。

2. V-T/V-I If you warn someone not to do something, you advise them not to do it so that they can avoid possible danger or punishment. 告誡

Mrs. Blount warned me not to interfere. 佈朗特太太告誡我不要插手。

"Don't do anything yet," he warned. "Too risky."

“先別行動，”他警告道，“太冒險了。”