"被" is passive tense in Chinese. First of all, you haven’t to know the positive tense. Let me tell you: 我 关 上 了 门 （positive tense） = 门 （被） 我 关上 了。 小红 吃了 一个 苹果 (positive tense) = 苹果 （被） 小红 吃 了。 我 开 了 灯。(positive tense) = 灯 （被） 我 打开 了。 小明 借走 了 我的 自行车 = 我的自行车 （被） 小明 借走了。 以上三句可以看出，“门，苹果，灯”都是动作发生的对象，当它们做主语时可以用“被”字句。表示被动，”被” 是介词。句式：: 动作发生的对象 + 被 + 动作的发出者(人) + 动词 +其他 * “被”字句中，动词后有“了”“过”表示动作发生了。 We can use “把” instead of “被”. 例如：我 关 上 了 门。 = 我 （把） 门 关上了。 小红 吃了 一个 苹果 = 小红 （把） 苹果 吃了。 小明 借走 了 我的 自行车 = 小明（把） 我的自行车 借走了。 句式：主语(人) + 把 + 动作发生的对象 + 动词+其他。 * “把” 是介词，与动作发生的对象一起做状语

1. in the tranditional and standard chinese, “被”=“be + past participle”, it can represent the passive tense. you can learn its usage from the examples above. Beside, "被" can also be a noun, which means quilt, blanket especially covered on the bed. 2. 【this part is what i want to add】in informal chinese, espcially the internet slang, "被"="be forced to do sth with reluctant will" e.g. “被自愿”=“be forced to be willing to do sth (actually be reluctant to do that)” "被捐款" =“be forced to donate money (actually be reluctant to donate money at all)”

A single chinese word may have several meanings. 被 is a verb, meaning cover, wear 被 is a noun, meaning quilt, blanket 被 in grammar, it is particle for passive voice sentences

It mean quilt、a surname、by、be. It usually use in passive voice. Eg: You know some birds are not meant to be caged, their feathers are just too bright. 你们知道有些鸟儿注定是不会被关在笼子里的,它们的每一片羽毛都闪耀着自由的光辉。 The British Beer and Pub Association said it did not want the new plastic glasses to be made compulsory .英国啤酒与酒吧协会称,他们不希望酒吧被强制规定使用新型塑料杯 You have been used as a cat's paw by Nancy; she only wants you to help her get into local society.你被南希利用了,她只是要你帮她进入当地的社交界 he saw that two of his dogs had been killed trying to save him.下载MP3 就是复苏的意思,他看到两只狗为了救它被灰熊杀死了 Are you clear?

This building was destroyed by the soldiers during the war. 在战争中，这座建筑「被」士兵们毁掉了。 The soldiers destroyed this building during the war. 在战争中，士兵们「把」这座建筑毁掉了。