Subject + 刚刚 + Verb + Object
The adverb 刚刚 (gānggāng) means "just now" or "a moment ago" and indicates that an action was completed very recently. It is placed before the verb to emphasize how little time has passed since the action occurred.
他刚刚出去,你晚了一步。
Tā gānggāng chūqù, nǐ wǎn le yī bù.
He just went out; you missed him by a step.
我刚刚收到你的消息,现在回复你。
Wǒ gānggāng shōudào nǐ de xiāoxi, xiànzài huífù nǐ.
I just received your message and am replying now.
飞机刚刚降落,乘客们正在下飞机。
Fēijī gānggāng jiàngluò, chéngkèmen zhèngzài xià fēijī.
The plane just landed, and the passengers are deplaning.