被动语态用法详解ppt课件

jacket
keeping warm Guangzhou
The jacket is used for keeping warm. The jacket is made in Guangzhou.
summary
英语中动词有主动语态和被动语态 两种语态。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, 在被动语态中动作的执行者有时 用by短语表示出来.
(2)The students didn't forget his lessons easily.
His lessons were not easily forgotten.
(三)常见的八种时态中的被动语态 3. 一般将来时：
(1)They will send cars abroad by sea. Cars will be sent abroad by sea.
一般现在时(simple present)： S(主语)+am/is/are +过去分词(done)
一般过去时(simple past)： S+was/were +过去分词(done)
Ann can take good care of the cats ．
The cats can be taken good care of by Ann.
情态动词(model verb)：
S+ can/must/should等情态动词 + be+过去分词
They can sing some beautiful songs. Some beautiful songs can be sung by them.
(二) 被动语态的时态、人称和数的变化
主要体现在be的变化上，其形式与系动词be的变化形式完全 一样。以 give 为例，列表如下：
等词用来表示被动，而英语用： 助动词be + 及物动词的过去分词构成。
What does she do every day?
She waters the flowers every day.
The flowers are watered by her every day.
主动句与被动句之间的转换
［注］被动语态没有将来进行时和过去将来进行时。
主动句变为被动句所遵循的4个步骤：
1 把原主动句中的宾语变为被动句的主语。
2 把动词变为被动形式即be +过去分词，并注意 其人称和数随主语的变化，而动词的时态则保持 不变。
3 原主动句的主语如需要则放在by后面以它的 宾格形式出现（注代词的宾格），如不需要则 可省略。 4 其它的成分（定语、状语）不变。
The Passive Voice
(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”、“给”、“由”、“受”
被动语态的几种句型 1 肯定句 主语 + be + 过去分词 + (by…)
A sweet song was sung by her on the stage. 2 否定句 主语 + be + not +过去分词 + (by…) A sweet song wasn’t sung by her on the stage.
chemistry lab without a teacher.
(三)常见的八种时态中的被动语态 2. 一般过去时：
(1)They agreed on the building of a new car factory last month.
The building of a new car factory was agreed on last month.
一般现在时： am / is / are + done 一般过去时： was / were + done 一般将来时： shall / will + be done 含有情态动词 should / would + be done 现在进行时： am / is / are + being + done 过去进行时： was / were + being + done 现在完成时： have / has + been + done 过去完成时： had + been + done 将来完成时： shall / will + have been + done 过去将来完成时：should / would + have been + done
(2)They will give plenty of jobs to school-leavers.
3 一般疑问句 Be + 主语 +过去分词 + (by…)
Was a sweet song sung by her on the stage? 4 特殊疑问句 疑问词 + be + 主语 +过去分词 + (by…) Where was a sweet song sung by her?
(三)常见的八种时态中的被动语态
We
主语
bought
some books.
谓语动词主动语态的过去式
宾语
Some books
were bought
主语
谓语动词被动语态的过去分词
( by us )
介词+ 宾语
My mother sweeps the floor every day. The floor is swept by my mother every day.
1. 一般现在时： (1)People grow rice in the south of the
country. Rice is grown in the south of the
cous to enter
the chemistry lab without a teacher. We are not allowed to enter the