被动式所有形式！知道的请帮个忙

Question

细致点

Answer 1

被动语态由"助动词be＋及物动词的过去分词"构成。人称、数和时态的变化是通过be的变化表现出来的。现以speak为例说明被动语态在各种时态中的构成。
一般现在时：am／is／are＋spoken
一般过去时：was／were＋spoken
一般将来时：will／shall be＋spoken
现在进行时：am／is／are being＋spoken
过去进行时：was/were being＋spoken
现在完成时：have／has been＋spoken
过去完成时：had been + spoken

用法
(1)不知道或没有必要说明动作的执行者是谁。
例如：Some new computers were stolen last night. 一些新电脑在昨晚被盗了。(不知道电脑是谁偷的)
This bridge was founded in 1981.这座桥竣工于1981年。
(2)强调动作的承受者，而不强调动作的执行者。
例如：The glass was broken by Mike.玻璃杯是迈克打破的。
This book was written by him.这本书是他写的。
Your homework must be finished on time.你们的家庭作业必须及时完成。
四、主动语态变被动语态的方法
(1)把主动语态的宾语变为被动语态的主语。
(2)把谓语变成被动结构(be＋过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。
(3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。
eg:All the people laughed at him.

特殊情况:

1.He made the boy work for two hours yesterday.

The boy was made to work by him for two hours yesterday.

2.Mother never lets me watch TV .

I am never let to watch TV by mother.

3.Jack gave Peter a Christmas present just now.

(1)A Christmas present was given to Peter by Jack just now.

(2)Peter was given a Christmas present by Jack just now.

现在进行时被动语态：
定义：现在进行时的被动语态表示此时此刻某事正在被做。
构成：be动词 + being+过去分词(done)
eg:The sports meeting is being held in our school.
我校正在举行运动会。
用法：
1）“be being done” 中的动词be应随主语(sing. / pl.)作相应的变化。
2）将现在进行时的主动语态变为现在进行时的被动语态的关键是：把be doing变为be being done.
例1. The students are cleaning the classroom now.
→The classroom is being cleaned now.
现在学生们正在打扫教室。 (are cleaning变为is being cleaned)
一般现在时的被动语态：
构成：be动词+过去分词（done）
eg：The glass was broken by the boy．
玻璃杯被那男孩打碎了。