了1 + 了2 — Progress Up to Now
了1 and 了2 can appear in the same sentence together — one right after the verb, one at the very end — to say how far something has progressed as of right now, and that it’s still going.
Stacking both 了’s tells the listener: this much has happened, and it’s still true right now. Drop the second 了2 and you just get a plain completed amount, with no sense of “and it’s still ongoing.”
1S + (已经 yǐjīng +) V + 了1 + Number + Measure Word + 了2
This says how much has happened so far, and that the total is still climbing.
2S + V + 了1 + Time Spent + (的 de + O) + 了2
Same idea, but with time spent instead of a countable quantity — “this much time has passed, and counting.”
Drop the final 了2 and the sentence changes meaning: 他养了狗五年 without the second 了 usually implies the five years are over — a closed period, not “still going.”
3Three Sentences Compared
Same words, three arrangements — this is the clearest way to see exactly what each 了 contributes.
| Sentence | Meaning |
|---|---|
我學了五年中文我学了五年中文 |
Emphasizes completion: a finished, closed block of time — five years of study, done, with no claim about whether it’s still happening. |
我學五年中文了我学五年中文了 |
Emphasizes the result as of right now: five years’ worth, so far — a statement of the current total, unrelated to whether it will continue. |
我學了五年中文了我学了五年中文了 |
Emphasizes the stretch from past to present: five years and still going — implying it likely continues into the future. |
4Practice
Translate each sentence into Chinese, then tap the card to check your answer.
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