解析：主动语态与被动语态的转换规则

英语中的语态体系浩如烟海，里面学问很大，掌握语态的用法对学习英语有很大的意义。今天，小编为同学们带来了相当丰富的与被动语态的用法相关的语法，一起来看看吧！

一、主动语态和被动语态概说

英语的语态分主动语态和被动语态，主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。被动语态由“助动词be+过去分词”构成：

Everybody likes him. 大家都喜欢他。 (主动语态)

He is liked by everybody. 他受到大家的喜欢。(被动语态) 

二、主动语态变被动语态的方法

1. 主动语态变被动语态的基本方法

将主动语态的宾语变为被动语态的主语，将主动谓语变为被动谓语(be+过去分词)，将主动语态的主语变为by短语(在被动句中用作状语)：

He broke the cup. → The cup was broken by him.

【注意】若不强调动词执行者，被动语态中的by短语通常可以省略：

He was born in 1986. 他生于1986年。

What is this flower called? 这种花叫什么花？

2. 双宾动词的被动语态

双宾动词即指带双宾语的动词，它们在变为被动语态时，通常是把间接宾语(指人)变为被动语态的主语，而把直接宾语(指事物)保留下来(称为保留宾语)：

He answered me that question. → I was answered that question by him.

有的动词则通常把直接宾语(指事物)变为被动语态的主语，而把间接宾语改为介词to 或for引起的状语(到底用to还是for，与所搭配的动词有关)：

He wrote her a letter. → A letter was written to her. (与动词write搭配用介词to)

She made him a new coat. → A new coat was made for him. (与动词make搭配用介词for)

有时以上两种方式均可用：

He gave her some money. 他给她一些钱。

→ She was given some money. / Some money was given to him.

He bought her a watch. 他给她买了一块表。

→ A watch was bought for her. / She was bought a watch. 

3. 被动语态的时态

被动语态的时态由被动结构“be+过去分词”中的动词be来体现，其基本结构和用法如下：

★(1) 一般现在时的被动语态：am [is, are]+过去分词

English is taught in our school. 我们学校学英语。

We are taken good care of at school. 我们在学校受到很好的照顾。

★(2) 一般过去时的被动语态：was [were]+过去分词

He was taken to the police station. 他被带到了警察局。

The house was built ten years ago. 这座房子是10年前建的。

★(3) 一般将来时的被动语态：will be+过去分词

A new building will be built here soon. 不久这里将建一栋新楼。

The meeting will be held at two this afternoon. 会议将于今天下午2点举行。

(4) 现在完成时的被动语态：have [has]been+过去分词

All the work has been done now. 所有的工作现在都做好了。

Have the letters been posted? 信都寄了吗？

(5) 过去完成时的被动语态：had been+过去分词

He said the work had been finished. 他说工作已完成了。

(6) 现在进行时的被动语态：am [is, are] being+过去分词

My watch is being repaired by him. 我的表正在由他修理。

The plan is now being discussed. 计划现在正在讨论。

(7) 过去进行时的被动语态：was [were] being+过去分词

He said that the man was being operated on. 他说那个人正在动手术。

He told me that a new station was being built. 他说正在修建一个新车站。

(8) 过去将来时的被动语态：would be+过去分词

He said that the meeting would be held next week. 他说会议将于下周举于。

★4. 含有情态动词的被动形式

若主动语态中谓语含有情态动词，在相应的被动语态中通常应保留该情态动词，其结构为“情态动词+be+过去分词”：

Everyone must know this. →This must be known by everyone.

请看以下带情态动词被动句实例：

This can’t be done in a short time. 这不是短期内可以完成的。

Can this be done by machine? 这可以由机器来做吗?

The work must be done at once. 这工作必须马上做了。

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