Talking About the Past: 了 (le)
Talking About the Past: 了 (le)
You already know Chinese verbs never conjugate for tense — so how do you say something happened? Meet 了 (le), the small particle that marks a completed action, without ever touching the verb itself.
Grammar Comparison
Grammar Comparison
了 marks completion, not "past tense" exactly
我吃了 (wǒ chī le, I ate / I have eaten)
I ate
了 (le) attaches after a verb to signal the action is completed — closer to English "I've eaten" than a strict grammatical past tense. 我吃了苹果 (wǒ chī le píngguǒ) is "I ate an/the apple", with 了 doing all the work English would hand to the verb ending "-ed". The verb 吃 (chī, to eat) itself never changes at all, exactly as the earlier lesson on 是/有 promised.
了 disappears with time words that already establish the past
昨天我吃苹果 (zuótiān wǒ chī píngguǒ, Yesterday I ate an apple) — 了 is optional here
Yesterday I ate an apple
When a time word like 昨天 (zuótiān, yesterday) already makes clear the action is finished, 了 often gets dropped entirely, since it would be redundant — this is different from English, which still needs "ate" (not "eat") no matter how clear the time context is. Chinese leans on context here in a way English grammar never allows itself to.
没 negates 了 — and 了 disappears when you do
我没吃 (wǒ méi chī, I didn't eat) — never 我没吃了
I didn't eat
To say an action didn't happen, use 没 (méi) before the verb — and drop 了 entirely; 我没吃了 is simply wrong. This connects back to the two negation words from the sentence-structure lesson: 没 is exactly the one reserved for actions that didn't occur, and 了 and 没 never appear together on the same verb.
Vocabulary
Vocabulary
- English
- completed-action particle
- English
- to eat
- English
- to drink
- English
- to go
- English
- to come
- English
- to see / to watch / to read
- English
- yesterday
- English
- today
- English
- tomorrow
- English
- I ate
- English
- I didn't eat