短语词组用作名詞 (n.)動詞+～give sb a caution 給某人一個警告形容詞+～necessary caution 必要的謹慎用作動詞 (v.)～+名詞caution the prisoner 警告那個囚犯～+介詞caution about sth 就某事警告caution about the speed 注意車速caution against doing sth 警告(某人)不要做某事caution against the danger 謹防危險短語 返回 cautioned