了: Completion and Change of State
了 (le) has two jobs at HSK 1. After a verb it marks the action as completed, and at the end of a sentence it marks a new situation or a change of state.
了 (le) has two main uses at HSK1:
Use 1 — Verb + 了 (completion marker)
Placed directly after the verb to show the action is completed.
- 我吃了饭。= I ate a meal. (action done)
- 他看了书。= He read a book. (action done)
Use 2 — Sentence-final 了 (new situation)
Placed at the end of the sentence to signal a change of state or new development.
- 他来了。= He's arrived. (he wasn't here before)
- 我会了。= I can do it now. (I couldn't before)
- 下雨了。= It's started raining.
Negation — always use 没有, remove 了:
- Correct: 我没有吃饭。
- Wrong: 我没有吃了饭。
When you negate with 没有, drop 了 entirely.
Worked examples
| Chinese | Pinyin | English | What it shows |
|---|---|---|---|
| 我吃了早饭。 | Wǒ chī le zǎo fàn. | I ate breakfast. (action completed) | 了 comes right after the verb 吃. This is Use 1: completion marker. |
| 下雨了，我们回家吧。 | Xià yǔ le, wǒ men huí jiā ba. | It started raining — let's go home. | Sentence-final 了 signals a new situation (it wasn't raining before). This is Use 2. |
| 她没有来。 | Tā méi yǒu lái. | She didn't come. | Negation uses 没有. No 了 — drop it when negating with 没有. |
Word by word
Each word in this pattern on its own: what it does here, the structure, three more examples, and the mistake to avoid.
了 (le)
Placed after a verb it marks a finished action, and placed at the end of a sentence it marks a change or new situation.
Structure: Verb + 了 (+ quantity / object) | Sentence + 了
| Chinese | Pinyin | English |
|---|---|---|
| 他买了三个苹果。 | Tā mǎi le sān gè píng guǒ. | He bought three apples. |
| 我们到家了。 | Wǒ men dào jiā le. | We have arrived home. |
| 天黑了，我们回家吧。 | Tiān hēi le, wǒ men huí jiā ba. | It has got dark, let's go home. |
Not: 昨天我没去了学校。 With 没 the action did not happen, so drop 了: 昨天我没去学校。
In the official HSK 3.0 grammar outline: level 1, particles (动态助词); level 1, particles (语气助词).
了 is also explained in: Duration complement: V+了+time (HSK 4).
What this opens up
These patterns list 了 among their own prerequisites, so they become readable once this one holds.
The same pattern at other levels
- 了 — HSK 4
Questions about 了
What does 动态助词 (了) mean in Chinese?
了 (le) has two jobs at HSK 1. After a verb it marks the action as completed, and at the end of a sentence it marks a new situation or a change of state. It is an HSK 1 grammar point.
How do you use 动态助词 (了) in a sentence?
我吃了早饭。 — Wǒ chī le zǎo fàn. — I ate breakfast. (action completed). 了 comes right after the verb 吃. This is Use 1: completion marker.
Where does 动态助词 (了) come in the HSK sequence?
HSK 1, and none of its prerequisites are grammar points — nothing else on this reference has to come first, so you can start here.
What does 动态助词 (了) lead to?
Experiential Aspect 过 (HSK 2), Progressive Aspect (HSK 1). Each of them names 动态助词 (了) among its own prerequisites.
Is 了 the past tense in Chinese?
No. 了 marks that something is completed or has changed, not that it is in the past. Past actions with no sense of completion, like a habit, do not need it: 我小时候住在北京。
Where does 了 go, after the verb or at the end of the sentence?
After the verb it says the action is done, as in 我买了书。 At the end it says a new situation has begun, as in 我会说了。 Both can appear together.
了 is one topic of 829. GraphChinese teaches them in prerequisite order, so this pattern reaches you on the day everything it rests on is proven. The whole course, HSK 0 through HSK 6, is $49 once for lifetime access.
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