人教版(2019)必修第二册Unit 2 Wildlife protection Discovering Useful Structures 课件(共23张PPT)

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名称 人教版(2019)必修第二册Unit 2 Wildlife protection Discovering Useful Structures 课件(共23张PPT)
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版本资源 人教版(2019)
科目 英语
更新时间 2024-04-05 17:03:56

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(共23张PPT)
Unit 2 Wildlife protection
Discovering Useful Structures
现在进行时的被动语态
一、现在进行时的被动语态的构成
be(am/is/are)+ being+ done
The ship is being built this month.
这个月人们正在建船。
1.定义:________________________________________________
________________________________________________
表示“某人/事此时此刻正在被…”,主语是动作的承受者, 表示说话时或现阶段某个被动的动作正在进行。
It is reported that the water in the river is not being protected now.
据报道,这条河里的水现在没有得到保护。
Are the babies being taken care of by this nurse
这些婴儿正由这个护士照看吗?
Who is being trained for the coming football match
为了即将举行的足球比赛,谁正接受训练?
二、现在进行时的被动语态的结构
2. 结构
1)肯定形式:am/is/are+being+过去分词
The house is being painted.
2)否定形式: am/is/are+not+being+过去分词
The trees are not being watered.
3)疑问形式: Am/Is/Are+主语+being+过去分词?
Am I being watched over
4)特殊疑问句的形式: 把特殊疑问词放在一般疑问句前面。
How many bridges are being built in the village
Where is a modern school being built
is being built
isn't being built
Is a modern school being built
The workers are building the house.
the workers.
What are the workers doing ?
The house
is being built by
主语
谓语
宾语
The workers
are building
the house
宾语
主语
谓语变被动
(时态不变)
be+being+done+by
3. 主动语态变被动语态的原则
“三变”
例:They are building nine parks.
原句主语变为by短语
宾语变为主语
谓语由主动变为被动
“三不变”
原句意思不变
原句时态不变
原句主谓宾以外成分不变
Nine parks ______________ by them.
How many parks ____________
are being built
are being built
三、现在进行时的被动语态的用法
1.表示此刻正被进行的动作,句中常用now,at the moment等时间状语。
Changjinhu is being shown in the cinema now. Let's go to see it.
现在《长津湖》正在电影院放映呢,咱们去看吧。
2.表示现阶段正被进行的动作,但此动作在此时此刻不一定正在发生。
—Could I use your car please
—Mine is being repaired by the workers.
——我能用你的车吗?
——我的车正在被工人们修着。
3.表示一种经常性的被动行为,常和always,constantly,frequently等表示频率的副词连用,这种用法常常带有说话者的赞扬或厌恶的感彩。
I feel very puzzled that the goods in our shop are always being stolen.
我感到很迷惑,我们商店的商品老是被偷。
4.表示按计划或安排主语将要承受谓语动词所表示的动作。
A welcome party is being held tonight.
今晚将要举行一场欢迎晚会。
5.与部分情态动词连用,表示对正在发生的动作的推测。
He may be being scolded by his moher at the very moment.
此刻他也许正被他妈妈责骂呢。
is being discussed
being praised
is being made
四、使用现在进行时的被动语态应注意的问题1.不可遗漏being现在进行时的被动语态中,be为第一助动词,being为第二助动词,缺一不可,且位置不可互换。此结构若缺少being,则就成为一般现在时的被动语态或系表结构。试比较:The reportis being writtenby a famous professor.报告正在由一名著名的专家写着。The reportiswellwritten.这个报告写得很好。(系表结构)2.不可遗漏介词
take care of,look after,talk about,think of等动词短语用于现在进行时的被动语态时,其中的介词不可省略。
Look!The children are being taken care of by their grandmother.
瞧!那些孩子正由他们的奶奶照看着。
3.没有进行时的被动语态
一些表示状态、心理活动、拥有、存在等的动词(和主动语态一样)一般不用进行时被动语态, 常用一般现在时被动语态表示此时此刻或目前主语承受谓语动词的动作。
【练习】判断正误。
小王, 过来,有你的电话。
Xiao Wang, come here. You are being wanted
on the phone.
Xiao Wang, come here. You are wanted on the
phone.
3.“be(am/is/are)+under/in+n.” 结构
有时可相当于现在进行时的被动语态。
The bridge is in use.
=The bridge is being used.
这座桥正在使用。
be under protection (=be being protected)正在受到保护
be under repair be under construction
be under discussion be under research
be under development be under consideration
be under debate be under observation
be under investigation
The problem is under discussion now.
= The problem is being discussed now.
The telephone is in use.
= The telephone is being used.
The city is under attack at the moment
=The city is being attacked at the moment.
用所给动词的适当形式填空
1. History is _________ by the people. ( make)
2. Some trees ________________ in the deserts now. (plant)
3. A new subway _____________ (build) next summer.
4. She ______________ (take) to the hospital already.
5. Thousands of satellites ______________ (send) up into the space so far.
6. Notes ______________( take) by the students at the moment.
made
are being planted
will be built
has been taken
have been sent
are being taken
Practice
7.The grammar which ________________(learn) now is easy to master.
8.Some animals _________________(protect) well enough now.
9.The sports meeting ___________(hold) in our school at present.
10.My washing machine _______________(repair) this week, so I have
to wash my clothes by hand.
11.Look! The boy _____________(criticize) by the teacher in the office.
is being learned
are being protected
is being held
is being repaired
is being criticized
Present Continuous Passive Voice
Present Continuous Passive Voice
are being caught
are being sold
are being killed
is being destroyed
are being covered
is being polluted
Simple(一般)
Continuous(进行)
Present
(现在)
do/does
Tense
is/am/are doing
Perfect(完成)
Perfect continuous(完成)
Past
(过去)
Future
(过去)
The past future
(过去将来)
have/has done
have/has been doing
did
was/were doing
had done
Had been doing
will/shall do
will/shall be doing
will/shall have done
will/shall have been doing
should/would do
should/would be doing
should/would have done
should/would have been doing
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