Learn how to use 了 to indicate a change in situation or state, beyond just marking completed actions
1 Introduction: Two Functions of 了
Besides its well-known function of indicating that an action has been completed, 了 (le) can also indicate a change in the situation or state. When used in this way, 了 shows that something is different now compared to before.
Change in State Visualization
Key Concept: 她胖了 (tā pàng le) doesn’t just mean “She is fat.” It means “She is fat NOW (but wasn’t before)” – indicating a change from a previous state.
Function 1: Completed Action
Usage: After verbs to indicate an action is finished
Position: Usually after the verb (or at end of sentence)
Function 2: Change of State
Usage: To indicate a change in situation or state
Position: At the end of the sentence
Key Difference
When 了 indicates change, it always comes at the end of the sentence, not after the verb. This is different from when it indicates completed action.
2 Structure 1: With Adjectives
When used with adjectives, 了 indicates that the quality described by the adjective has changed. The sentence implies that the subject was not in this state before, but is now.
Examples with Adjectives
Adjective + 了 Structure
Meaning: The subject has changed to have this quality.
Implied: The subject didn’t have this quality before.
Common adjectives used: 大 (big), 小 (small), 长 (long), 短 (short), 热 (hot), 冷 (cold), 贵 (expensive), 便宜 (cheap), 好 (good), 坏 (bad), 干净 (clean), 脏 (dirty)
Equative Verb + 了 Structure
Meaning: The relationship has changed.
Implied: The previous relationship was different.
Action Verb + 了 Structure
Meaning: The possession or relationship has changed
Implied: The previous state was different
Auxiliary Verb + 了 Structure
Meaning: The desire or willingness has changed.
Implied: The previous desire was different.
Understanding the Change
- Normal weight
- A little heavy
- Overweight
- She lost weight.
- Her body changed.
- She’s now thin.
Key Point: 妈妈瘦了 doesn’t just describe her current state. It emphasizes the change from her previous state to her current one.
3 Structure 2: With Equative Verbs
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4 Structure 3: With Action Verbs
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5 Structure 4: With Auxiliary Verbs
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Practice Exercises
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