Sentence-Final 了 (le): The “Change of State” 了
A 了 at the END of a sentence means a NEW situation — something has changed. 我饿了 = “I've got hungry”, 下雨了 = “it's raining now”, 我不去了 = “I'm not going anymore”. It's a different 了 from the completed-action one after the verb.
Why this trips learners up
Sooner or later you hit a sentence that ends in 了 (le) for no obvious reason — 我饿了, 下雨了 — and wonder what it's doing there. This is the change-of-state 了 (often called 了2): parked at the very end of the sentence, it announces a new situation. Something has changed, or is about to. 我饿了 isn't just “I'm hungry” — it's “I've become hungry (I wasn't before)”; 下雨了 is “it's started raining”.
It comes in three shapes. With an adjective: Subject + Adj + 了 (天气冷了 = “the weather's turned cold”). With a verb: Subject + Verb + 了, often translatable as “now” (宝宝会走路了 = “the baby can walk now”). And in the negative, Subject + 不 + Verb + 了 = a changed plan, “not … anymore”: 我不去了 = “I've decided not to go”. The crucial part: don't confuse this end-of-sentence 了 with the OTHER 了 — the one right after the verb that marks a completed action (我吃了三个 = “I ate three”). Same character, two jobs, and the position is what tells them apart. (One nuance worth knowing: in reply to a question, this same final 了 often reads as “already” with no 已经 needed — to “老板呢？” (“where's the boss?”), 他走了 means “he's already left”.)
The structure
Colour key
Each colour marks one grammatical role — and the same colour means the same role on every page in the Lab.
Examples in context
Real-world sentences, easiest first. Toggle pinyin or the translation, tap any word to see its role, or play the audio.
Tap a word to see its grammatical role.
wǒ 我 Subject kùn 困 Adjective le 了 Pattern
I'm sleepy now.
gōngjiāochē 公交车 Subject lái 来 Verb le 了 Pattern
The bus is here.
tiānqì 天气 Subject lěng 冷 Adjective le 了 Pattern
The weather's turned cold.
wǒ nǚ'ér 我女儿 Subject huì 会 Function word zǒulù 走路 Verb le 了 Pattern
My daughter can walk now.
tāmen 他们 Subject jiéhūn 结婚 Verb le 了 Pattern
They got married.
nǐmen 你们 Subject dào 到 Verb jiā 家 Object le 了 Pattern ma 吗 Question
Are you home yet?
wǒ 我 Subject bù 不 Negation hē 喝 Verb kāfēi 咖啡 Object le 了 Pattern
I'm not drinking coffee anymore (I've decided to stop).
tài 太 Adverb wǎn 晚 Adjective le 了 Pattern wǒ 我 Subject bù 不 Negation qù 去 Verb le 了 Pattern
It's too late now — I'm not going anymore.
Common mistakes
Why it happens: The “new situation” lives entirely in 了. Bare 下雨 is just the words “fall rain”; it's 下雨了 that means “it's (started) raining now”. Whenever you mean a change has happened, the sentence needs the final 了.
Why it happens: The changed-plan negative is 不 + Verb + 了 (“I've decided not to…”): 我不去了. It takes 不, never 没 — 没 negates a completed past (我没去 = “I didn't go”) and doesn't pair with this change-of-state 了.
Why it happens: This 了 closes the whole sentence — it can't slip in mid-clause. “I can drive now” is 我会开车了 (了 at the end), not 我会了开车. Keep the change-of-state 了 at the very end, after the object.
Compare & contrast
| 了 after the verb — a completed action (了1) | 了 at the end — a new situation (了2) | The difference |
|---|---|---|
| 我学了三年中文。wǒ xué le sān nián Zhōngwén. = I studied 3 years (done) | 我会说中文了。wǒ huì shuō Zhōngwén le. = I can speak Chinese now (new) | 我学了三年中文 — 了 right after 学, marking a completed, quantified action (“I studied for three years”). 我会说中文了 — 了 at the very end, marking a new state (“I can speak Chinese now”). |
| 她睡了八个小时。tā shuì le bā gè xiǎoshí. = she slept 8 hours (done) | 她睡了。tā shuì le. = she's gone to sleep now (new) | 她睡了八个小时 — completed: “she slept eight hours”. 她睡了 — change of state: “she's gone to sleep now”. Same verb; the position of 了 (and what follows) decides. |
Try it yourself
Say “I'm not going anymore (I've changed my mind)” — tap the words into order.
Related patterns
Quick reference card
Sentence-Final 了 (le): The “Change of State” 了 grammar.merrymandarin.com A pocket summary — print it and keep it by your desk.