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  1. warn sb against doing sth 告诫某人不要做某事。如:

  The doctor warned the patient against smoking. 医生告诫病人不要抽烟。

  The teacher warned the children against playing on the street. 老师告诫孩子们不要在街上玩。

  2. warn sb against [about] sb (sth) 告诫某人提防某人(某事) 。如:

  He warned us against pickpockets. 他叫我们提防扒手。

  The police have warned shopkeepers about the forged banknotes. 警察已通知各店主要留意假钞。

  3. warn sb of sth 警告(通知)某人会有某情况。如:

  We warned him of the danger. 我们警告过他有危险。

  The teacher warned us of the test. 老师通知我们要考试。

  【注】warn 一般不能接双宾语。上面第一句不能说成:We warned him the danger.

  4. warn sb that-clause 警告某人……。如:

  I have warned him that it is not allowed. 我警告过他这是不允许的。

  Police warned drivers that the roads were icy. 警方提醒司机路面已结了冰。

  We warned her that it would happen. 我们警告过她会发生这种事。

  I warn you that it is dangerous to swim here. 我警告你,在这里游泳是很危险的。

  5. warn sb (not) to do sth 告诫某人(不)要做某事。如:

  I warned him to be careful. 我告诫他要小心。

  I warned him to stay away. 我告诫他别靠近。

  He warned me not to go out with her. 他告诫过我不要同她一起出去。

  The doctor warned him not to eat oily food after the operation. 医生告诫他手术后不要吃油腻食物。

  比较:He warned me not to going out at night. / He warned me against going out at night. 他叫我不要晚上出去。

  以上内容由智课小编为大家整理的关于“SAT分类词汇记忆篇:warn”,希望可以帮助到大家,小编在此预祝大家在考试中取得好成绩!

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