warns

1. vt. 警告; 告诫 give notice of possible danger or unpleasant consequences; inform in advance of what may happen

• warn parent预先通知父母
• warn police预先通知警察
• warn teacher预先通知老师

• warn amply广泛地告诫
• warn earnestly严肃地警告
• warn faithfully忠诚地告诫
• warn graciously有礼貌地告诫
• warn grimly讨厌地警告
• warn solemnly严肃地警告
• warn subtly巧妙地告诫
• warn sufficiently充分地告诫
• warn urgently紧急地警告

• warn about告诫…提防…
• warn sb about the danger of告诉某人(有)…的危险
• warn...against告诫…提防,警告…不要
• warn sb against driving on ice警告…不要结冰的路面上开车
• warn of发出关于…的警告,把…预先告诉
• warn sb off the land叫某人离开这里
• warn sb to提醒某人…

warn of警告某人某事

warn against警告（...）不要；提醒（...）提防

warn about就...提出警告

1. He warned me against going there at night.
   他警告我晚上不要到那去。
2. They warn her that if she do it again she will be sent to prison.
   他们警告她说她再这么干就把她关进监狱。
3. The police warn us not to go out at night.
   警察告诫我们夜间不要出门。
4. I warned them that there might be snakes in the woods.
   我提醒他们树林里可能有蛇。
5. If you can't arrive there on time, you should warn them.
   如果你不能按时到达，应该预先通知他们。

1. Birds sometimes chatter to each other to warn of danger.
   鸟儿有时互相啁啾,通报危险。