过
guò · guoThe particle that says "I have, at some point in my life, done this." Not when. Not how often. Just that it once happened. The critical pair with 了.
The full verb 过 (guò, fourth tone) means "to pass, to cross, to go through." The walking radical 辶 is visible at the bottom-left; the phonetic 呙 (or simplified 寸) sits at the top-right. The original sense of spatial passage — crossing a bridge, passing a gate — is productive in modern compounds: 过桥 (cross a bridge), 过街 (cross the street), 通过 (to pass through, to pass a test).
From that spatial sense, the character extended to temporal passage: "to have gone through a time or event." By the medieval period, 过 had grammaticalised into a verbal particle, losing its tone and becoming a neutral-tone suffix attached to verbs: V + 过 = "have ever gone through the event of V-ing." This grammaticalised 过 is what modern grammar books call the experiential aspect marker.
The two readings coexist in the language and are distinguished by context, stress, and — for attentive speakers — tone. The full verb stays fourth-tone (guò); the experiential particle drops to neutral tone (guo).
The experiential is formed by placing 过 directly after the verb, before any object:
Subject + Verb + 过 + (Object)
Examples:
- 我去过北京。(Wǒ qùguo Běijīng.) — I have been to Beijing. (at some point in my life)
- 你吃过北京烤鸭吗？(Nǐ chīguo Běijīng kǎoyā ma?) — Have you ever eaten Beijing roast duck?
- 他学过三年中文。(Tā xuéguo sān nián Zhōngwén.) — He has studied Chinese for three years. (at some earlier point; no longer studying)
Note the third example: 过 can pair with a duration (三年 "three years") to mean "did this activity for three years in the past, and has since stopped." The activity is closed.
English "I went to Beijing" maps onto both 我去了北京 and 我去过北京, and learners use them interchangeably for months. They mean different things.
了 (perfective) anchors to a specific occasion. It reports a completed event, often one whose result is still relevant. 我去了北京 — "I went to Beijing [on a specific occasion, possibly recent, possibly still there or just back]."
过 (experiential) ignores the occasion. It reports that the event has happened at some indeterminate point, treating the speaker's life as a set of experiences-had. 我去过北京 — "I have been to Beijing [at some time in my life]."
A common diagnostic: if the question "when?" is natural to ask about the event, use 了. If the natural follow-up is "how many times?" or "what was it like?", use 过. 了 is anchored to a timeline; 过 is anchored to the life of the subject.
Another diagnostic: 过 readily takes a negative answer (没去过, "never been"). 了 does not negate with 没…了 at all — its negation is 没 + verb without 了 (没去, "didn't go").
我去过北京。 Wǒ qùguo Běijīng. — I have been to Beijing [experience; at some point].
我去了北京。 Wǒ qùle Běijīng. — I went to Beijing [specific trip; usually very recent or ongoing in context].
你吃过日本菜吗？ Nǐ chīguo Rìběn cài ma? — Have you ever eaten Japanese food? [life-experience question; natural before ordering together]
你吃了日本菜吗？ Nǐ chīle Rìběn cài ma? — Did you eat the Japanese food? [specific meal; used if you just served them some and want to know if they ate it]
Present habitual actions take neither. "I go to Beijing every year" is 我每年去北京, no aspect particle. "I like Japanese food" is 我喜欢日本菜. Both 了 and 过 presuppose that the event is already complete or bracketed off, not ongoing.
Experiential 过 negates with 没 (méi) while keeping the 过 particle in place:
Subject + 没 + Verb + 过 + (Object)
- 我没去过北京。(Wǒ méi qùguo Běijīng.) — I have never been to Beijing.
- 他没吃过臭豆腐。(Tā méi chīguo chòu dòufu.) — He has never eaten stinky tofu.
This is asymmetric with 了, which loses its particle entirely under negation. The retention of 过 under negation is precisely because 过 is marking a category of experience (had-or-not-had), not an event-completion.
The original lexical meaning, fourth tone. Spatial: 过马路 (cross the street), 过桥 (cross a bridge). Temporal: 过节 (celebrate a festival, literally "pass through a festival"), 过生日 (have a birthday). Quantitative: 超过 (to exceed), 过分 (excessive, "past the measure").
A directional compound: "cross-come." Used both literally (physical motion toward the speaker) and metaphorically (recovering, regaining consciousness: 醒过来 "wake up", 缓过来 "come back to oneself").
"Passed-error" — a fault that has been committed. In classical Chinese 过 alone often meant "a fault, a transgression" (the Analects: 过则勿惮改 "when you have faults, do not hesitate to correct them"). The modern compound preserves the sense.