Doing Something Somewhere
在 + 地点 + 动词This indicates the location where an action takes place. '在' is placed before the location, followed by the verb. This structure is often used with '正' or a doubled '在' to emphasize that the action is happening right now.
我在超市买面包。
I'm buying bread at the supermarket.
他正在商店看价格。
He is checking prices at the store.