Meaning of jìng rán:
竟然
unexpectedly; to one's surprise; in spite of everything; in that crazy way; actually; to go as far as to
Tā jìngrán yíngdéle bǐsài.
他竟然赢得了比赛。
He unexpectedly won the competition.
Tā jìngrán bù zhīdào zhège xiāoxi.
他竟然不知道这个消息。
To my surprise, he didn't know about this news.
Tā jìngrán wàngjìle jīntiān de huìyì.
他竟然忘记了今天的会议。
He surprisingly forgot today's meeting.
Tā jìngrán méiyǒu zhǔnbèi jiù cānjiāle bǐsài.
他竟然没有准备就参加了比赛。
He joined the competition in that crazy way, without preparing.
Tā jìngrán méi gàosu wǒ zhè jiàn shì.
他竟然没告诉我这件事。
He actually didn't tell me about this.
Tā jìngrán wàngle jīntiān shì wǒ de shēngrì.
他竟然忘了今天是我的生日。
He actually forgot that today is my birthday.