Condition + 才 + Verb
才 indicates that something happens later than expected or only after a certain condition is met. It conveys the idea of "not until" or "only then," emphasizing delay or difficulty. Place 才 before the verb to stress that the action was hard-won or came after a wait.
我等了两个小时,他才来。
Wǒ děng le liǎng gè xiǎoshí, tā cái lái.
I waited for two hours before he finally came.
她努力了很久,才通过了考试。
Tā nǔlì le hěn jiǔ, cái tōngguò le kǎoshì.
She worked hard for a long time before finally passing the exam.
下了三天雨,今天才放晴。
Xià le sān tiān yǔ, jīntiān cái fàngqíng.
It rained for three days, and it finally cleared up today.