"Have you been to the supermarket?" is the Engpsh way of asking if someone has visited the supermarket. The phrase "have been" is in the present perfect tense, which is used to describe an action that started in the past and continues to the present. The word "supermarket" is a noun that refers to a large store that sells a wide variety of foods and household goods.
Here are some additional examples of sentences using the phrase "have been to the supermarket" in Engpsh, with their translations in Chinese:
"I have been to the supermarket this morning to get some groceries." (我今早去了超市买些杂货。)
"Have you been to the supermarket yet? We need to buy some milk." (你去超市了吗？我们需要买点牛奶。)
"No, I haven't been to the supermarket this week. I've been busy with work." (不，我这周没去超市。我一直很忙。)