被
bèi
Using "bei" sentences
被 is the passive — and in Chinese it usually carries the sense that what happened was unwelcome.
Subj. + 被 + (Doer) + Verb + Extra
How it works
我被他骗了 — I was cheated by him. Like 把, the verb needs something after it, most often 了.
The doer can be left out: 我的自行车被偷了 — my bike got stolen.
Chinese uses the passive far less than English, and traditionally for bad outcomes. For neutral statements, a plain active sentence is more natural.
Examples
wǒ bèi tā piàn le
我被他骗了。
I was cheated by him.
wǒ de zì xíng chē bèi tōu le
我的自行车被偷了。
My bike was stolen.
tā bèi lǎo bǎn mà le yí dùn
他被老板骂了一顿。
He got told off by the boss.