{{Grammar Box}} Bei Sentences, which are called 被字句 (bèizìjù) in Chinese, are a key way to express the [[Passive voice|passive]] in modern Mandarin Chinese. In passive sentences, the ''object'' of an action becomes the subject of the sentence, and what would have been the subject of the normal (active voice) sentence, the "doer" of the action, becomes secondary, and may or may not be included in the passive sentence. == What is a 被 sentence == 被 (bèi) sentences (被字句 in Chinese) are simply sentences which use a [[Passive voice|passive]] verb and the preposition 被. 被 sentences are not the only way to create the passive verb form in Chinese, but they are the most common, and definitely the type to tackle first. For the sake of clarity, let's give some examples of the passive in English first: * The boy '''ate''' the hot dog. normal sentence in the active voice; note that "the hot dog" is the object of the verb "ate") * The hot dog '''was eaten''' by the boy. the same sentence in the passive voice; "the hot dog" is now the subject, and "the boy" is the "doer") * The hot dog '''was eaten'''. also in the passive voice, but with the "doer" omitted) Now let's see those same sentences in Chinese: