be动词加动词的过去分词的用法

be动词加动词的过去分词的用法？

被动语态由“助动词be+及物动词的过去分词”构成。其时态变化只改变be的形式，过去分词部分不变。

被动语态可用于各种时态。

各时态的被动语态举例如下：

1、 一般现在时的被动语态. am / is / are + 动词的过去分词

Our classroom is cleaned every day.

This car is made in China.

2、一般过去式的被动语态: was / were + 动词的过去分词

His desk was cleaned just now.

The station was built in 1928.

3、现在进行时的被动语态: am / is / are + being + 动词的过去分词

A new factory is being built in our city now.

Some trees are being cut down in the park.

4、过去进行时的被动语态: was / were + being + 动词的过去分词

A new factory was being built in our city at that time.

Some babies were being looked after by Miss Chen last year.

5、一般将来时的被动语态:

(A) will / shall + be + 动词的过去分词

(B) am / is / are + going to be +动词的过去分词.

Some new factories will be built in our city this year.

Your watch is going to be mended in an hour.

6、过去将来时的被动语态: (1).would / should + be + 动词的过去分词

(2).was / were +going to be + 动词的过去分词.

She said that some new factories would be built soon in our city.

He thought that your watch was going to be mended after an hour.

7、现在完成时的被动语态:have / has + been + 动词的过去分词

Some new factories have been built in the city since last year.

Your watch has been mended already.

8、过去完成时的被动语态:had + been + 动词的过去分词

He said that some new factories had been built in the city.

I didn’t know that my watch had been mended .

9、含情态动词的被动式：can/may/must + be + done.

He can not be found.

I must be paid for this.

be动词加过去分词属于被动语态的结构，表示被动的动作。此时的be动词不叫系动词，而是助动词，已经完全丧失了系动词的一切功能，只作为语法变形的辅助工具存在。

be动词加过去分词例句

1.The meeting will be held next Friday. (be+ held)

会议在下周五召开。

2.Anyone who breaks the law has to be punished by law. (be + punished)

任何违反法律的人必然受到法律的惩罚。

3.He was brought up by his grandparents. (was + brought)

他是由祖父母养活成人的。

4.Those letters were wirtten by a famous writer.那些信是由一位有名作家写的。

5.I was taught by Miss Zhao last year.去年，我是由赵老师教。

“be+过去分词”并不一定都是被动语态，有时是系表结构。当“be+过去分词”表示动作时为被动语态，be是助动词，be后面的过去分词是主要动词，动作的对象是主语；当“be +过去分词”表示主语所处的状态时为系表结构，be是连系动词。be后面的过去分词是表语，相当于形容词。其区分办法如下：

1．如果强调动作或句中有介词by引导出动作的执行者，该句一般为被动语态，否则为系表结构。例如:

The glass is broken．

玻璃杯碎了。（系表结构）

The glass was broken by the boy．

玻璃杯被那男孩打碎了。（被动语态）

2．如果句中有地点、频率或时间状语时，一般为被动语态。如：

The magazine is published in Shanghai．

这家杂志出版于上海。（被动语态）

The door is locked．

门锁着。（系表结构）

The door has already/just been locked．

门已经/刚刚被锁上。（被动语态）

The shop is opened．

这家商店开门了。（系表结构）

The shop is opened at 8 a.m. everyday．

这家商店每天上午八点开门。（被动语态）

3．被动语态除用于一般时态和完成时态外，还可以用于其他各种时态，而系表结构中的系动词be只有一般时态和完成时态。

所以下列句子都是被动语态：

The machine is being repaired．

机器正在修。

A new school will be built here．

这里将要建一所新学校。

be动词后面不能加动词的过去式，应该是动词的过去分词形式，于被动语态的结构。

be动词意思和用法很多，一般的意思是：是。此种用法有多种变化形式：is、am、are、was、were、being、been、to be。另外be动词还有成为的意思。

根据句子中不同的人称、数和时间，型态，应该选择相应的be动词。

例1、 I was taught by Miss Zhao last year。

例2、 Those letters were wirtten by a famous writer。