他在一家超市工作。He works in a supermarket.

他们在超市买了很多的东西。 They've bought lots of things in the supermarket

超市和书店在英语中为什么前面都要加the

表示特指时用定冠词the

表示泛指时用a/an,如:There is a supermarket in our town. The supermarket is new.