1. Before the subject: `刚才 你去哪儿了?(Gāngcái nǐ qù nǎr le?)` - “Where did you go just now?”
2. **After the subject, before the verb:** `你 刚才 去哪儿了?(Nǐ gāngcái qù nǎr le?)` - "Where did you go just now?" * It can even function as the subject of a sentence, which is impossible for its English equivalent "just now." For example: `刚才 的天气真好。(Gāngcái de tiānqì zhēn hǎo.)` - "The weather just now was really good."