英语里面英文怎么说

In English, the term for English is simply "English." You can use it as a noun to refer to the language itself or as an adjective to describe something that is related to or written in English. For example:
"I'm learning English as a second language." (Here, "English" is a noun referring to the language.)
"I'm reading an English book." (Here, "English" is an adjective modifying the noun "book.")
It's worth noting that "English" is not capitalized when it is used as an adjective (e.g., "an English book"), but it is capitalized when it is used as a proper noun referring to the language (e.g., "I speak English").