英语不分上下怎么说

In English, we usually say that there is no upper or lower level of English, or that English has no hierarchy. This means that the language does not have a formal or informal register, and that there is no distinction between formal and informal speech or writing. Instead, the appropriate level of formality in English depends on the context, audience, and purpose of the communication. For example, you might use more formal language when writing a business letter or giving a presentation, but more informal language when talking with friends or sending a text message.