Comparison of “才” and “就”

In Chinese, both 就 (jiù) and 才 (cái) function as adverbs placed before a verb to express the speaker's subjective attitude regarding time, speed, or degree of difficulty:

就 (jiù): Indicates that in the speaker's opinion, the action happened early, fast, or smoothly (“as early as”, “already”, “only took”).

才 (cái): Indicates that in the speaker's opinion, the action happened late, slowly, or with difficulty (“not until”, “only then”, “took as long as”).

Grammar Structure

“就”: Time / Condition + 就 + Verb + (了) — early, fast, or easy

“才”: Time / Condition + 才 + Verb — late, slow, or difficult; the particle 了 is usually NOT used

就	才
Early, fast, easy	Late, slow, difficult
Often ends with 了	Usually no 了

1. “就” — early, fast, smooth

我(Wǒ)早(zǎo)上(shang)五(wǔ)点(diǎn)就(jiù)起(qǐ)床(chuáng)了(le)。

I got up as early as 5:00 AM.

坐(Zuò)飞(fēi)机(jī)一(yí)个(gè)小(xiǎo)时(shí)就(jiù)到(dào)了(le)。

It takes only one hour by plane to get there.

我(Wǒ)很(hěn)容(róng)易(yì)就(jiù)找(zhǎo)到(dào)了(le)他(tā)的(de)家(jiā)。

I found his house very easily.

你(Nǐ)怎(zěn)么(me)这(zhè)么(me)早(zǎo)就(jiù)要(yào)睡(shuì)觉(jiào)了(le)？

How come you're going to sleep so early?

2. “才” — late, slow, difficult

八(Bā)点(diǎn)上(shàng)课(kè)，他(tā)九(jiǔ)点(diǎn)才(cái)起(qǐ)床(chuáng)。

Class starts at 8:00, but he didn't get up until 9:00.

坐(Zuò)火(huǒ)车(chē)八(bā)个(gè)小(xiǎo)时(shí)才(cái)能(néng)到(dào)。

It takes as long as eight hours by train to get there.

弟(Dì)弟(di)三(sān)个(gè)小(xiǎo)时(shí)才(cái)做(zuò)完(wán)作(zuò)业(yè)。

It took my younger brother three whole hours to finish his homework.

来(Lái)机(jī)场(chǎng)的(de)路(lù)上(shang)我(wǒ)才(cái)发(fā)现(xiàn)忘(wàng)带(dài)护(hù)照(zhào)了(le)。

Only on the way to the airport did I realize I forgot my passport.