了 After the Verb or After the Object?
Completion 了 (了1) can sit after the verb (我买了车) OR after the object (我买车了) for the same meaning, and object length decides which sounds natural: a short bare object takes 了 at the end (我上课了, not the dangling 我上了课), a long object keeps 了 after the verb (我读了老师推荐的那本书). 了 also stays after the verb when the object is quantified (买了一辆车) or a time/place is present (昨天看了电影). A second 了 at the end means “already, and counting” (喝了三杯了) or strong confirmation.
Why this trips learners up
You learned 了1 as the completion marker that sits right after the verb: 我买了票 (“I bought the ticket”). But 了 also very often lands after the object instead: 我买票了. Both are correct, both mean the action is complete, so the real question is which slot sounds natural, and the answer is driven mostly by how long and heavy the object is.
Start with the trap. When the object is short and bare, putting 了 right after the verb dangles: 我上了课 feels unfinished, like “I had class and then…?”. That's because 了 straight after the verb leans forward, setting up an expectation of more to come, and a bare one-word object is too light to close it off. So for short bare objects, move 了 to the very end: 我上课了, 他们签合同了, 妈妈回家了. Now flip to the other extreme. When the object is long, 了 at the end forces the listener to wait through the whole heavy phrase before learning whether the action completed, so 了 goes after the verb: 我读了老师上周推荐的那本书. Anything in between works either way.
There's a second, reliable pattern: 了 stays comfortably after the verb whenever the sentence is already “finished” by something else. If the object is quantified or modified, 了 goes right after the verb: 买了一辆车, 点了一杯热咖啡, 做了很多菜. The measure word or adjective gives the sentence weight, so it no longer dangles. Same when a time, place, or purpose is present: 昨天看了电影, 一起吃了饭, 为了他辞了工作. The extra information closes the sentence, so 了 sits happily after the verb.
Two more moves belong here. First, double 了 (V + 了 + Object + 了): a 了 after both verb and object. It signals either a “big quantity, and still counting” (他喝了三杯了, “three cups already”) or strong confirmation, like English “I did finish it” (我做了作业了). Second, the future-sequential 了: 了 after the verb can mark the first action as done before a second one, in a future frame, and here it sits after the verb, before the object: 你下了班就来找我 (“once you're off work, come find me”), 我下了课去找你 (“I'll come find you after class”). Same 了, marking completion, just pointing forward.
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 jiāo 交 Verb zuòyè 作业 Object le 了 Pattern
I turned in the homework (short bare object → 了 after the object).
tāmen 他们 Subject qiān 签 Verb hétong 合同 Object le 了 Pattern
They signed the contract (short bare object → 了 after the object).
wǒ 我 Subject mǎi 买 Verb le 了 Pattern liǎng zhāng 两张 Measure word diànyǐngpiào 电影票 Object
I bought two movie tickets (quantified object → 了 after the verb).
tā 她 Subject diǎn 点 Verb le 了 Pattern yì bēi 一杯 Measure word rè 热 Adjective kāfēi 咖啡 Object
She ordered a hot coffee (modified object → 了 after the verb).
wǒ 我 Subject zuótiān 昨天 Time shōu 收 Verb le 了 Pattern nǐ de 你的 Other yóujiàn 邮件 Object
I received your email yesterday (a time word is present → 了 stays after the verb).
wǒ 我 Subject yǐjīng 已经 Adverb dú 读 Verb le 了 Pattern lǎoshī shàngzhōu tuījiàn de 老师上周推荐的 Other nà běn shū 那本书 Object
I've already read the book the teacher recommended last week (long object → 了 after the verb).
tā 他 Subject yǐjīng 已经 Adverb hē 喝 Verb le 了 Pattern sān bēi 三杯 Measure word le 了 Pattern
He's had three cups already (double 了: big quantity, and counting).
nǐ 你 Subject xià 下 Verb le 了 Pattern bān 班 Object jiù 就 Adverb lái 来 Verb zhǎo 找 Verb wǒ 我 Object ba 吧 Function word
Once you're off work, come find me (future-sequential 了: first action done before the second).
Common mistakes
Why it happens: With a short bare object, 了 straight after the verb dangles: 妈妈回了家 feels unfinished, like “Mom came home and…?”. Move 了 to the end: 妈妈回家了. (回了家 is fine mid-sentence, where a second clause finishes the thought: 回了家就做饭.)
Why it happens: With a long object, 了 at the very end makes the listener wait through the whole phrase before learning the action completed. Put it after the verb: 我买了昨天你推荐给我的那本书, not …那本书了. The heavier the object, the more 了 wants to be up front, right after the verb.
Why it happens: When the object is quantified or modified, 了 goes right after the verb: 他买了一辆车. 他买一辆车了 sounds off, because the measure phrase 一辆车 already gives the sentence weight, so 了 belongs after the verb, not tacked on at the end.
Compare & contrast
| V + 了 + Object (了 after the verb) | V + Object + 了 (了 after the object) | The difference |
|---|---|---|
| 我买了一辆车wǒ mǎi le yí liàng chē = “I bought a car” (quantified object → 了 after the verb) | 我买车了wǒ mǎi chē le = “I’ve bought a car” (short bare object → 了 after the object) | 我买了一辆车 = “I bought a car,” with 了 after the verb because the object is quantified (一辆车). 我买车了 = “I've bought a car,” with 了 after the object because it's a short bare noun (车). Heavy or quantified object keeps 了 after the verb; a short bare object pushes it to the end. |
| 我吃了两个包子wǒ chī le liǎng gè bāozi = “I ate two baozi” (quantified → 了 after the verb) | 我吃饭了wǒ chī fàn le = “I’ve eaten” (short bare object → 了 after the object) | 我吃了两个包子 = “I ate two baozi,” 了 after the verb because 两个包子 is quantified. 我吃饭了 = “I've eaten,” 了 after the object because 饭 is a short bare noun. Same verb, and the object's weight decides where 了 lands. |
Try it yourself
Say “He bought a car,” with the object quantified. Put 了 right after the verb.
Related patterns
Quick reference card
了 After the Verb or After the Object? grammar.merrymandarin.com A pocket summary — print it and keep it by your desk.