求初三英语 被动语态的结构

Question

用法，结构最好再举几个例子 急急急 亲们，踊跃回答啊~

Answer 1

被动语态就是be动词加动词分词的形式，用来表示的呢就是什么东西被。。。。
1.一般现在时：主+am\is\are+P.P（过去分词）
　　2.一般过去时：主+was\were+P.P
　　3.一般将来时：主+will be+P.P
　　4.现在进行时：主+am\is\are+being（固定不变）+P.P
　　5.过去进行时：主+was\were+being（固定不变）+P.P
　　6.现在完成时：主+have\has been+P.P
　　7.过去完成时：主+had been+P.P

　☆☆☆主动语态变为被动语态例句：
　　一般现在时：主：We believe him. 被：He is believed by us.
　　一般过去时：主：He bought his children some pens. 被：Some pens were bought for his children by him.
　　一般将来时：主：Everyone will know the truth soon . 被：The truth will be know by everyone.
　　现在进行时：主：Mary is making a doll. 被：A doll is being made by Mary.
　　过去进行时：主：They were carrying the hurt player. 被：The hurt player was being carried by them .
　　现在完成时：主：He has received the letter. 被：The letter has been received by him.
　　过去完成时：主：They had built ten bridges. 被：Ten bridges had been built by them.

追问

被动语态 结构中 allow doing sth.和 be allowed to do sth.有什么区别

追答

be allowed to do是被动语态，意为被允许做。。。

Answer 2

①The book was taken by him这本书被他拿着②The cup was borken这个杯子被打烂了

追问

那句子中有should和allowed 的呢？ eg.Students should be allowed to do homework with friends.
固定结构

追答

这是情态动词+ be done

追问

谢谢了