被 ,叫 ,讓

被,叫,讓  in passive voice sentence 
The subject of a 被,叫,讓 is usually the receiver of an action and the object is the doer. Sometimes, there is no object in 被,叫,讓 sentence.

receiver of the action +  被,叫,讓 + agent of the action + verb +  complement /了

• The subject of a 被,叫,讓  is usually the receiver of an action .
• The agent of the action does not to be specified always. If not specified, it can be referred to 人  

他被打了。 He was beaten.
他被人打了。He was beaten by someone.
他被王朋打了。He was beaten by Wang Pong.
王朋打他了。 Wang Pong beat him

杯子被打破了

杯子被我打破了

我打破杯子了

書被拿去了

書被小王拿去了

小王把書拿去了