HSK 3
就 (jiù) vs 才 (cái) in Chinese
就 and 才 both comment on timing, in opposite directions. 就 says something happened early, soon, or easily (他八点就来了 — he came as early as 8). 才 says it happened late, or only after effort or conditions (他九点才来 — he didn't come until 9). Same clock, opposite feeling.
STRUCTURE
就 early or soon, 才 late or only then
When to use 就/才 — and when not
Use it when
- 就 for "as early as / right away": 我马上就来。
- 才 for "not until / only then": 他昨天才知道。
- 才 after a condition — "only then": 说了三遍他才懂。
Don't use it when
- Treating 才 + 了 as always wrong — 了 can appear with quantities, duration, or a new situation; learn the meaning of the whole sentence。
- 就 for "not until" (late) — that reverses the meaning; use 才: 九点才来。
- Putting them after the verb — both are adverbs and sit before it.
Right vs. wrong
他九点就才来。
他九点才来。
就 and 才 stacked for one timing meaning
就 and 才 express opposite viewpoints and cannot be stacked here. To say "not until 9", choose 才: 他九点才来。
他来九点才。
他九点才来。
才 placed after the time and verb
才 is an adverb and belongs before the verb, while the time phrase comes earlier. Put the sequence in the order time + 才 + verb: 他九点才来。
Examples
我马上就来。
Wǒ mǎshàng jiù lái.
I'll come right away.
他八点就到了。
Tā bā diǎn jiù dào le.
He arrived as early as 8.
他昨天才知道。
Tā zuótiān cái zhīdào.
He only found out yesterday.
他九点才来。
Tā jiǔ diǎn cái lái.
He didn't come until 9.
我说了三遍他才懂。
Wǒ shuō le sān biàn tā cái dǒng.
He understood only after I said it three times.
Common mistakes
他九点就才来。
Tā jiǔ diǎn jiù cái lái.
Choose 才 for 'not until'; do not stack 就 and 才: 他九点才来。
他来九点才。
Tā lái jiǔ diǎn cái.
Put the time before 才 and the verb: 他九点才来。
我马上才就来。
Wǒ mǎshàng cái jiù lái.
For 'right away', use 就 before the verb without 才: 我马上就来。
Think you've got it?
Write your own 就/才 sentence and check that grammar point first.
就 (jiù) vs 才 (cái) FAQ
What is the difference between 就 and 才?
就 = early / soon / easily (八点就来 — came as early as 8). 才 = late / only then / after effort (九点才来 — didn't come until 9). Same time, opposite attitude.
Can 才 be used with 了?
Sometimes. 他九点才来 is the basic "not until 9" pattern, but 了 can appear when the sentence adds a quantity, duration, or new situation, such as 他才来了两天. Do not judge 才 + 了 without context.
How do I say "right away / as soon as"?
就: 我马上就来 (I'll come right away), 说完就走 (leave right after finishing). For "not until", switch to 才.