warn有什么用法,有什么词组吗
1个回答

warn v. 警告,劝告;  【warn用法精析】  (1) warn sb of/about sth 提醒某人某事  It was thoughtful of you to warn me of your arrival.  你来之前先通知我,真是考虑得很周到。  She was angry that there was no sign put up to warn people about ...