他们该怎么说英语

"They" is a pronoun that is used to refer to a group of people or objects. In English, you can use the pronoun "they" to refer to a group of people when you don't know the gender of the people in the group, or when the group includes people of different genders. For example, you could say "They are going to the store" to refer to a group of people who are going to the store.