「何んなに先生を誤解なさるんですか」
translation
"Why are you misunderstanding the teacher?"
kanji (pronunciations & definitions)
| 何: what (なに), what (ナニ), you-know-what, you-know-what, that thing | 先生: teacher (せんせい), instructor, master, sensei, title or form of address for a teacher, master, doctor, lawyer, etc. | 誤解: misunderstanding (ごかい) |