HSK 7-9
非
fēi动副前缀
to not be; not; wrong; incorrect; non-; un-; in-; de-; to reproach; to blame; (coll.) to insist on; simply must; abbr. for 非洲, Africa
这件任务非他完成不可。
Zhè jiàn rèn wu fēi tā wán chéng bù kě.
He absolutely must complete this assignment.
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Appears across levels (7-9) in the HSK 3.0 word list.