刚…就【gāng … jiù】

刚 + first action, 就 + second action: the second came hard on the heels of the first. 刚 stresses how recent the first action still was – often with a sense that the second came too soon.

Both 刚 and 就 are adverbs, so each goes after its subject and right before its verb.

Two subjects

With a different subject in each half, 就 follows the second subject.

• × 我刚出门，就他来了 → 我刚出门，他就来了
• × 刚我出门，他就来了 → 我刚出门，他就来了

刚, not 刚才

刚才 is a time word, "a moment ago", and doesn't pair with 就 this way.

• × 我刚才吃完饭就走了 → 我刚吃完饭就走了

刚…就 or 一…就

一…就 says "as soon as" in general and suits habits: 他一喝酒就脸红. 刚…就 is about one occasion, with the weight on how little time had passed.