This is the single most useful skill in the whole 被 subgroup, because it fixes the error English speakers make most: over-using 被. English marks the passive by default — nearly every "be + past participle" is grammatically passive. Chinese does the opposite: it leaves the passive unmarked by default and reaches for 被 only when there is a special reason. Master the one decision on this page and your Chinese will stop sounding translated. The core contrast is between the notional passive (no marker) and the 被 passive.
The default: notional passive for neutral results
If the event is a plain, expected outcome and no one needs to be blamed, drop the marker. Name the thing, state its result, and stop. This covers the overwhelming majority of "was done" sentences in daily speech.
衣服洗好了，你的白衬衫在最上面。
yīfu xǐ hǎo le, nǐ de bái chènshān zài zuì shàngmiàn
The clothes are washed — your white shirt's on top. (informal) — neutral result, no marker.
门开着，你直接进来就行。
mén kāi zhe, nǐ zhíjiē jìnlái jiù xíng
The door's open — just come straight in. (informal) — a state, not an adverse event.
晚饭做好了，就等你了。
wǎnfàn zuò hǎo le, jiù děng nǐ le
Dinner's ready — we're only waiting on you. (informal)
Trigger 1 — adversity: something bad happened
被 carries an inherited flavour of misfortune (its old meaning was "to suffer, to be subjected to"). When the event is unwanted — being cheated, robbed, scolded, soaked — 被 fits naturally and even signals your attitude toward it. This is the most common everyday reason to switch the marker on.
我被骗了，那个网站是假的。
wǒ bèi piàn le, nàge wǎngzhàn shì jiǎ de
I got scammed — that website was fake. (informal) — clear adversity, so 被.
他的钱包在地铁上被偷了。
tā de qiánbāo zài dìtiě shang bèi tōu le
His wallet got stolen on the subway. (neutral) — an unwanted event; agent unknown, so none is named.
Trigger 2 — you need to name the agent
The notional passive has no slot for a doer. The moment the who matters — for blame, contrast, or clarity — you must switch to 被 (or a 把/active sentence), because only 被 opens a place for the agent after it.
花瓶被弟弟打碎了，不是我！
huāpíng bèi dìdi dǎ suì le, bú shì wǒ!
The vase was smashed by my little brother — it wasn't me! (informal) — the agent is the whole point, so 被.
我刚种的花被邻居的猫弄坏了。
wǒ gāng zhòng de huā bèi línjū de māo nòng huài le
The flowers I just planted were ruined by the neighbour's cat. (informal)
Trigger 3 — formal and written register
Modern written and journalistic Chinese, under long Western influence, has stretched 被 to neutral and even positive events where speech would never use it — 被选为 (was elected), 被评为 (was rated), 被授予 (was awarded). Recognise this as a register signal: it belongs in reports and headlines, not in a chat about dinner.
他被公司选为今年的最佳员工。
tā bèi gōngsī xuǎn wéi jīnnián de zuì jiā yuángōng
He was named the company's employee of the year. (formal) — positive event, but 被 is fine in written register.
这项技术已被广泛应用于医疗领域。
zhè xiàng jìshù yǐ bèi guǎngfàn yìngyòng yú yīliáo lǐngyù
This technology has been widely applied in the medical field. (academic)
The decision at a glance
| Situation | Use | Example |
|---|---|---|
| Neutral, expected result | notional (no marker) | 蛋糕吃完了 (the cake's finished) |
| Adverse event | 被 | 蛋糕被狗吃了 (the dog ate the cake!) |
| Agent must be named | 被 + agent | 蛋糕被妹妹吃了 (little sister ate the cake) |
| Formal / written report | 被 | 他被评为优秀教师 (rated an outstanding teacher) |
The cleanest minimal pair to hold in your head: 蛋糕吃完了 (dàngāo chī wán le) is a neutral note that the cake is gone, while 蛋糕被狗吃了 (dàngāo bèi gǒu chī le) reports a small disaster with the culprit named.
蛋糕吃完了，我再去买一个。
dàngāo chī wán le, wǒ zài qù mǎi yí ge
The cake's finished — I'll go buy another one. (informal) — neutral, so no marker.
蛋糕被狗吃了，气死我了！
dàngāo bèi gǒu chī le, qì sǐ wǒ le!
The dog ate the cake — I'm furious! (informal) — adverse and agent named, so 被.
Common Mistakes
1. The over-被 habit — marking every neutral result. Translating each English "was done" with 被 is the number-one tell of an English speaker.
❌ 手机被修好了。
Unnatural — a neutral 'the phone's fixed' takes no marker: 手机修好了.
✅ 手机修好了。
shǒujī xiū hǎo le
The phone's fixed. (neutral)
2. Trying to name the agent without 被. The notional passive has no agent slot, so the doer has nowhere to go.
❌ 窗户打破了小明。
Wrong — to name the culprit you need 被: 窗户被小明打破了.
✅ 窗户被小明打破了。
chuānghu bèi Xiǎomíng dǎ pò le
The window was broken by Xiaoming. (neutral)
3. Using spoken 被-for-adversity in a positive-neutral case out of place. 被 on a happy everyday event sounds odd unless the register is written.
❌ 我被同事帮了。
Unnatural — a favour isn't adversity; say 同事帮了我 or 我得到了同事的帮助.
✅ 同事帮了我一个大忙。
tóngshì bāng le wǒ yí ge dà máng
A colleague did me a big favour. (informal) — a good deed stays active.
Key Takeaways
- Default to the notional passive (no marker) for neutral, expected results — 衣服洗好了, 晚饭做好了.
- Switch to 被 for one of three triggers: adversity (被骗), a named agent (被他弄坏了), or formal register (被选为).
- The notional passive has no agent slot; naming the doer forces 被 or 把.
- English marks the passive by default; Chinese leaves it unmarked and marks it only for a reason.
- Beware the over-被 habit — the most common transfer error from English.
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Start learning Chinese→Related Topics
- The Notional (Unmarked) PassiveHSK 3 — Chinese usually expresses everyday passive meaning with NO 被 at all — an inanimate topic followed by a verb and its result: 饭做好了 'the food is ready', 书卖完了 'the books are sold out', 问题解决了 'the problem is solved'.
- 被 for Adversity vs Neutral 被HSK 5 — 被 traditionally flags an unwanted event — 被骗 'be cheated', 被批评 'be criticized' — but modern, media-influenced Chinese also allows neutral and positive 被: 被选为代表, 被评为优秀员工. Neutral 被 sounds modern and somewhat written; the internet even coined an ironic 被就业, 被自愿.
- Agentless 被: When the Doer Is UnknownHSK 3 — When the doer is unknown, obvious, or beside the point, drop the agent and put 被 straight before the verb: 钱包被偷了 'the wallet was stolen', 门被关上了 'the door got closed'. This is the closest Chinese comes to the English agentless passive.
- The 被 PassiveHSK 3 — 被 (bèi) marks the subject as the affected party — the thing something was done TO: 杯子被他打破了 'the cup was broken by him', 我的自行车被偷了 'my bike was stolen'. It needs a completing element like 把 does, carries a flavour of adversity, and is used far less than the English passive.