非得……不可 (absolutely must)
Meaning
The pattern 非(得)……不可 uses a double negative to express strong necessity or inevitability, meaning 'absolutely must' or 'have to no matter what.' The variant 不行 can replace 不可 with a slightly more casual tone.
The pattern 非(得)……不可 uses a double negative — 非/非得 (must, cannot not) combined with 不可/不行 (cannot, not allowed) — to create a strong emphatic affirmative meaning 'absolutely must.' The variant without 得, written as 非……不可, tends to be more literary, while 非得 is more colloquial. When used with 不行 instead of 不可, the tone is slightly more casual. This pattern often implies stubbornness, determination, or inevitability — that there is no alternative. It differs from simple 必须 by being more emphatic and sometimes carrying a connotation of insistence against opposition.
Examples
- 这件事非得他亲自出面不可，别人去了没用。 This matter absolutely requires him to handle it personally — it's no use sending anyone else.
- 你非得现在就走不可吗？再等一会儿不行吗？ Do you absolutely have to leave right now? Can't you wait a moment longer?
- 老板说这个报告非得在周五之前完成不行。 The boss said this report absolutely must be finished before Friday.
Usage Guide
Context: spoken, written, emphatic
Tone: insistent
Do Say
- 这道菜非得用新鲜食材做不可，冷冻的味道完全不对。
- 非得亲眼看到证据不可，他是不会轻易相信的。
- 这种事非得当面说清楚不行，发消息容易产生误会。
Don't Say
- 我非得不喜欢吃辣不可。(非得……不可 expresses necessity for an action, not a state or preference — use 就是 or 实在 to emphasize a personal preference) → 我就是不喜欢吃辣。
- 非得明天是星期一不可。(非得……不可 expresses that someone must do something, not objective facts — it cannot impose necessity on calendar facts) → 明天就是星期一。
Origin & History
非 originally meant 'wrong' or 'not' in classical Chinese, and 得 here means 'must' or 'have to.' The double-negative construction 非……不可 (literally 'not...cannot') creates an emphatic affirmative meaning 'absolutely must.' This pattern has roots in classical Chinese and remains productive in modern Mandarin.
Cultural Context
Generation: All ages
Social background: Universal
Related Phrases
Flashcards, quizzes, audio pronunciation and spaced repetition