warn/wɔːn $ wɔːrn/

v. tell sb that sth dangerous or bad is likely to happen so that they can avoid it

v. [T] 警告，告诫；提醒：[warn (sb) (that) ...] The police have warned (visitors) that the river is dangerous. 警察警告过（游客），这条河很危险。

◇[warn sb of(或about) sth] The doctor warned him of(或about) the risks of the operation. 医生向他提醒过手术的风险。

◇[warn sb to do sth] I warned you to be careful! 我告诉过你要仔细的！

◇[warn sb not to do sth = warn sb against doing sth] My parents warned me not to go out alone at night. 我爸妈告诫我晚上不要一个人单独出门。

同音 warn; worn

常犯错误

✗ The patient was warned not eating oily food after the operation.

✓ The patient was warned not to eat oily food after the operation. 病人被告诫术后不要吃油腻的食物。