夢中になっている英語

"Dreaming" in English is the act of experiencing REM sleep, during which vivid images, sensations, and stories may occur in the mind. If you're referring to the English language within a dream, it would simply be "English." However, if you're asking about the phrase "dreaming in English" or the concept of being able to understand and use English within a dream, that is a common experience for many people who are learning or regularly use English.

Some people report being able to think, speak, and understand English in their dreams, even if they are not native speakers. This can be a sign of proficiency in the language and can contribute to language learning and development. It is also a fascinating aspect of the human mind and how it processes and uses language.