被动语态的用法我很不了解,高手门讲一讲

被动语态（一般现在时）
主动语态变被动语态时,主动语态句中的宾语变成被动语态句中的主语,主动语态句中的主语成为被动语态句中的动作的发出者.
被动语态的口诀
一般现、过用be done,be有人称、时、数变.
完成时态have done,被动将been加中间.
一般将来shall (will) do,被动变do为be done.
将来进行无被动,shall (will) be doing,
现在完成进行同,have (has) been doing.
现、过进行be doing,被动be加being done.
情、助、有、是妥安排,一律随新主语变.
否定助后加not,疑问一助置主前.
主语恰是疑问词,直陈语序主在前.
一般情助加be done,双宾多将间宾变.
复合宾语宾变主,宾补、主补相应变.
1） 一般现在时:am/is /are + done
2） 一般过去时:was/ were + done
3） 一般将来时:will（shall）/am/is /are going to + be + done
4） 过去将来时:would（should）/was/were going to + be + done.
5） 现在进行时:am/is/are + being done.
6） 过去进行时:was/were + being + done
7） 现在完成时:have/has + been + done
8） 过去完成时:had + been + done.
〔注〕被动语态没有将来进行时和过去将来进行时.
例：1、主动：The children gave the foreign guests a warm welcome.
被动：The foreign guests were given a warm welcome by the children.
孩子们热烈地欢迎外宾.
2、主动：People regard him as brilliant.
被动：He is regarded as brilliant by people

twerh

简单说来，就是be done
主语要是物，或者人
Mobile phones were used to connect with each other
I was told that it wasn't woth troble.
在难一点就是非谓语从句，省去was
I saw a beautiful buiding buit by workers.

be+过去分词

被动语态详解
（一） 语态分类
英语动词有两种语态，主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。如：
They will build a new bridge over the river. （主动）
A new bridge will be built over the river. （被动）
汉语中常用“被”...