3 · Adverbs: also, again, already, only
Jiù and cái: earlier or later
timing measured against expectation
Jiù says it happened earlier or more easily than expected; cái says it happened later or with more trouble.
就 and 才 do not change what happened; they add the speaker’s view of it. Put after a time, 就 means “as early as, already”: 他六点就起床了, “he was up as early as six”. 才 means “not until, only then”: 他十点才起床, “he didn’t get up until ten”. The clock time may be the same in two sentences and the adverbs still disagree, because they measure against what the speaker expected.
The same contrast works with effort and quantity. 我看一遍就懂了: one reading was enough — easy. 我看了三遍才懂: it took three — hard. English needs “only”, “as many as”, “not until”, “finally” to do what these two syllables do.
The detail that gives English speakers away is 了. 就 presents the event as done and done early, so it normally takes 了 at the end. 才 presents the event as only just happening, late, and it does not take 了: 他才来, not 他才来了.
Both stand directly before the verb, after the time or the condition they react to. Before a number, 才 means “only, no more than”: 他才十岁, “he is only ten”.
The form
| earlier than expected | 他六点就起床了。 |
| later than expected | 他十点才起床。 |
| easily | 我看一遍就懂了。 |
| with difficulty | 我看了三遍才懂。 |
| only now | 你怎么现在才来？ |
| only (before a number) | 他才十岁。 |
The rules one by one
The form this topic is aboutThe word that calls for it
就 after a time or an amount: sooner or more easily than expected, usually with 了.
她八岁就开始学钢琴了。She started learning the piano when she was only eight.
才: later or harder than expected, and no 了 after the verb.
我们等了一个小时，车才来。We waited an hour before the bus finally came.
Both stand directly before the verb, after the time or condition they react to.
会议九点开始，他八点半就到了。The meeting started at nine, and he was there by half past eight.
Before a number, 才 means “only, no more than”.
他才二十岁，已经当老板了。He is only twenty and already runs his own business.
A closer look
One clock, two attitudes
Compare 他十点就来了 and 他十点才来. Both say he came at ten. The first is said by someone who expected him at eleven, the second by someone who expected him at nine. A Chinese listener hears the speaker’s expectation in a single syllable, and leaving both out is perfectly possible but sounds flat, like a timetable.
The same pair runs through larger patterns. 一…就… is “as soon as” — the second thing follows immediately. 只有…才… is “only if” — the second thing comes only after a hard condition is met. And 早就…了 is “long since”: 我早就知道了, “I’ve known for ages”.
Exceptions and special cases (1)
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才 is followed by a negative and the sentence ends in 呢
it has nothing to do with time: it is an emphatic “certainly not, no way”.
我才不去呢！No way am I going!
This 才 stresses that the speaker’s view is the opposite of what someone assumed. It is common in lively speech and sounds childish or sulky if overused.
How to spot it
- 就…了
- 才
- 一…就
- 只有…才
- 早就
Example sentences
电影七点开始，他六点就到了。The film started at seven; he got there as early as six.
电影七点开始，他八点才到。The film started at seven; he didn’t get there until eight.
这个问题很简单，我五分钟就做完了。This problem was easy — I finished it in five minutes.
我问了三个人才找到那家饭馆。I had to ask three people before I found that restaurant.
你怎么现在才告诉我？Why are you only telling me now?
你等一下，我马上就来。Wait a moment — I’ll be right there.
7 more example sentences
我昨天晚上两点才睡。I didn’t get to sleep until two last night.
他学了一个月就会开车了。After only a month of lessons he could drive.
雨下了一整天，晚上才停。It rained all day and only stopped in the evening.
别着急，他一会儿就回来。Don’t worry — he’ll be back in a minute.
这件事我今天才知道。I only found out about this today.
她十八岁就大学毕业了。She had graduated from university by the age of eighteen.
我打了三次电话，他才接。I rang three times before he answered.
Worth knowing (1)
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Long since: zǎojiù
早就 pushes 就 as far back as it will go: something happened long ago, and the speaker is a little impatient that anyone should think otherwise. It ends in 了 like every 就 sentence about the past.
这个消息我早就听说了。I heard that news ages ago.
The trap English speakers fall into
Watch out
English “he didn’t go to bed until eleven” is in the past, so it feels as if 了 belongs. It does not: 才 already says that the event came late, only at that point, and 了 would present it as a completed fact in the other direction. 就 takes 了; 才 does not.
Jiù is sooner than you thought and takes le; cái is later than you thought and does not.
Your turn
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