在英语中，如果商店总是开着，我们可以用以下几种表达方式来描述这种情况：

The store is always open.
The store never closes.
The store is open 24/7.

其中，"open 24/7" 是一个常用的表达方式，意思是"24小时全天候开放"。

以下是一些例句：

I'm glad that this convenience store is open 24/7. I can always come here to buy something when I need it.
The gas station on the highway is open 24/7, so you can always stop and get fuel whenever you need it.
The grocery store down the street is always open, so you don't have to worry about not being able to buy food if you run out in the middle of the night.

希望这些信息对你有帮助！