他竟然赢了比赛!
tā jìngrán yíngle bǐsài !
He unexpectedly won the competition!
她竟然在考试中得了满分。
tā jìngrán zài kǎoshì zhōng déle mǎn fēn 。
She actually got a perfect score on the exam.
我竟然忘记了他的名字。
wǒ jìngrán wàngjì le tāde míngzì 。
I surprisingly forgot his name.