吃了一惊 / 受惊 / 惊 + Verb
The noun/verb 惊 (jīng) means 'fright' or 'to be startled.' It commonly appears in the set phrase 吃了一惊, meaning 'to get a shock' or 'to be taken aback.' It conveys a sudden, involuntary feeling of surprise or alarm.
听到那个消息,我们都吃了一惊。
Tīngdào nàge xiāoxi, wǒmen dōu chī le yì jīng.
When we heard the news, we were all taken aback.
她突然出现在门口,把我吓了一惊。
Tā tūrán chūxiàn zài ménkǒu, bǎ wǒ xià le yì jīng.
She suddenly appeared at the doorway and gave me a fright.
考试成绩出来了,结果让所有人大吃一惊。
Kǎoshì chéngjì chūlái le, jiéguǒ ràng suǒyǒu rén dà chī yì jīng.
The exam results came out, and the outcome shocked everyone.