非
fēi
must; simply have to; not; non-; wrong
In a story
“非关掉不可。今天是水，明天是电，后天是什么？”“It has to be shut down. Today it's water, tomorrow it's power. What's next?”第二份报告 · The Second Report · HSK 6
Grammar with 非
疑问代词的非疑问用法
谁/什么/哪儿… — non-question (any / every) uses
除非
除非 — unless / only if
非…不可
非…不可 — simply must / bound to
无非
无非 — nothing more than
Learn it in the app
Save a word while you read and it comes back as a flashcard, read aloud, when it is due.