Expressing "once" with "cengjing"

曾经 (céngjīng) is an adverb, and as such comes before verb phrases in a sentence. It adds the sense of "once" having happened (not the "one time" meaning of "once"), sometimes translated as "ever." It frequently pairs with 过.

Contents

Used with 过

When used with action verbs, 曾经 comes before the verb, and that same verb is followed by 过. For psychological verbs, the 过 is optional.

Structure

Subj. + 曾经 + Verb + 过 (+ Obj.)

Examples

Sometimes 曾经 is used with 了 rather than 过.

曾经 can also be used with some adjectives. In these cases, 过 is usually also used.

Used without 过

When used with the verbs 是, 在, and 有 (all related to existence rather than actions), 过 is generally not used.

Structure

曾经 + 是 / 在 / 有 ⋯⋯

Examples

Negative Form

Because 过 is used to talk about past actions, it should be negated with 没 (méi). When you mean to say "I haven't ever (done something)" or "(something) hasn't happened ever," just say 没⋯⋯过. It is incorrect to use 没 or 不 to negate 曾经.

Try not to say:

不曾 (bùcéng) and 未曾 (wèicéng), however, can also be used to express the above meaning, but they're more formal and thus used only in written language.

不曾/ 未曾 + Verb + 过 + Obj.

A few examples:

See also

Sources and further reading

Books