Mood Adverb: 莫非
语气副词：莫非
Express a surprised or suspicious guess using 莫非
Place 莫非 at the beginning of a clause to express a tentative, often surprised or suspicious guess. It is frequently paired with sentence-final particles 吗 or 不成.
莫非 is literary in flavour and conveys that the speaker finds the possibility somewhat surprising or alarming. It is stronger than 难道 in expressing suspicion and often implies the speaker hopes the guess is wrong.
Lesson Targets
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Podcast: Mood Adverb: 莫非 (语气副词：莫非)
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Understanding 语气副词：莫非
莫非 combines 莫 (do not / could it be that) and 非 (not), literally producing "could it not be that…?" In practice, it expresses a surprised conjecture — the speaker suspects something might be true and finds that possibility noteworthy or concerning. For instance, when a normally punctual colleague does not show up, you might think 莫非他出了什么事？(Could it be that something happened to him?). The tone is more dramatic than 是不是 and more literary than 难道. 莫非 frequently appears in novels, TV dramas, and elevated spoken Chinese. It pairs naturally with 吗 or the more literary 不成 at the end.
Key Points
- 莫非 (mòfēi) = "could it be that / is it possible that" — expresses a surprised or suspicious guess.
- More literary and dramatic than 是不是 or 难道.
- Often paired with 吗 or 不成 at sentence end.
- Implies the speaker finds the possibility surprising, alarming, or hard to believe.
- Common in written Chinese, novels, TV dramas, and formal spoken contexts.
- Can express both genuine suspicion and rhetorical disbelief.
- The subject usually comes after 莫非: 莫非他……, 莫非你…….
You will encounter 莫非 frequently in Chinese historical dramas (古装剧) and detective stories, where characters make dramatic guesses. In modern speech, using 莫非 adds a touch of literary flair and can make your Chinese sound more sophisticated.
Key Vocabulary
Example Sentences
她今天没来学校，莫非出了什么事？
She did not come to school today — could something have happened?
你平时不认真学习，莫非要等到期末考试了才开始紧张吗？
You never study seriously — are you going to wait until finals to start worrying?
他突然对我这么好，莫非有什么目的？
He is suddenly being so nice to me — could he have some ulterior motive?
莫非你已经知道了这件事？
Could it be that you already knew about this?
这么晚了他还没回来，莫非迷路了不成？
It is so late and he still has not come back — could he have gotten lost?
不成 adds literary flavour at the end
莫非这就是传说中的桂林山水？
Could this be the legendary landscape of Guilin?
Common Mistakes
莫非 is used for surprising or suspicious conjectures, not routine weather predictions. For ordinary probability, use 可能.
莫非 is typically used to guess about others, not to state your own condition. It functions as a conjecture about something you are uncertain of.
莫非 introduces a guess or rhetorical question. It cannot replace 不 or 没 as a simple negation. It must begin a conjectural clause.
Practice Exercises
Tips & Tricks
Use 莫非 when something unexpected happens and you are forming a dramatic guess — it adds suspense.
Pair 莫非 with 吗 for a standard question tone, or with 不成 for a more literary, dramatic feel.
Compare: 是不是 (neutral guess) vs. 难道 (rhetorical challenge) vs. 莫非 (surprised/suspicious conjecture).
Watch a Chinese detective drama — you will hear 莫非 whenever characters make deductions.
Homework
Write four scenarios where you use 莫非 to express a surprised guess: (1) a friend who is suddenly rich, (2) a colleague who has been acting strangely, (3) discovering something unexpected in an old book, and (4) wondering why a usually busy restaurant is empty.