曾经 (céngjīng) — once / at one time

曾经 (céngjīng)

曾经 means once or at one time, always referring to something that happened in the past. It emphasizes that an experience existed at some previous point, often contrasting with the present. It frequently appears with 过 to mark completed past experience. An important usage note: 曾经 always looks backward. You cannot use it for the future or present. If you want to say "I have been to Beijing," the natural sentence is 我曾经去过北京, combining 曾经 (once, in the past) with 过 (experiential marker).

Meanings

1. [adverb] Once; at one time; formerly. Refers exclusively to past events or states.

Example Sentences

我曾经去过北京。 Wǒ céngjīng qù guò Běijīng. I have been to Beijing before.

她曾经是一名教师。 Tā céngjīng shì yī míng jiàoshī. She was once a teacher.

这里曾经是一片森林。 Zhèlǐ céngjīng shì yī piàn sēnlín. This place was once a forest.

我曾经以为学中文很难。 Wǒ céngjīng yǐwéi xué Zhōngwén hěn nán. I once thought that studying Chinese was very difficult.

Collocations

Memory Hook

曾经 sounds a bit like "once upon a time." Every sentence with 曾经 is a small story that begins "once upon a time" and lives only in the past.