高中英语人教版（2019）必修第二册Unit 2 Wildlife Protection Discovering Useful Structures课件（共30张ppt，内嵌音频）

(共30张PPT)
Unit2 Wildlife Protection
Discovering Useful Structures
Identify the present continuous passive voice.
Master the present continuous passive voice’s structure and function.
Lead in
Enjoy the song: Love to be loved by you
Fill in the blank with the lyrics.
Baby, tell me how can I tell you
That I ________ you more than life
Show me how can I show you
That I'm _______ by your light
When you touch me I can touch you
To find out the dream is true
I _______ to be loved
I need to be _______
I love to be ________ by you
love
blinded
love
loved
loved
主动语态
被
动
语
态
Love To Be Loved By You 是一首旋律优美的英文歌曲，演唱者是美国流行歌手马克·特伦茨（Marc Terenzi）。
2005年，Marc与德国歌手莎拉·寇娜（Sarah Connor）结婚时，将这首歌作为爱的礼物献给妻子。
Simple（一般）
Continuous（进行）
Present
（现在）
do/does
Tense
is/am/are doing
Perfect（完成）
Perfect continuous完成进行
Past
（过去）
Future
（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
review
现在进行时的被动语态
Present Continuous Passive Voice
be doing 现在进行时
be done 被动语态
be being done 现在进行时的被动语态
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
Someone is hunting African elephant.
someone .
African elephant
is being hunted by
主语
谓语
宾语
Someone
is hunting
African elephant
宾语
主语
谓语变被动
（时态不变）
be+being+done+by
( )
They are hunting Tibetan antelopes.
them .
Tibetan antelopes
are being hunted by
主语
谓语
They
are hunting
Tibetan antelopes
宾语
主语
谓语变被动
（时态不变）
be+being+done+by
宾语
( )
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宾语
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
句型
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
2.现在进行时的被动语态的基本结构
肯定结构 be (am/is/are) being done
否定结构 be (am/is/are) +not+being done
一般疑问结构 Be (am/is/are) +主语+being done
特殊疑问结构 特殊疑问词+be(am/is/are)+主语+being done
Summary
①表示说话时正在进行的被动动作,句中常用now, right now, at this moment, at present等时间状语。
Some food is being eaten by the bear now.
②表示现阶段正在进行的被动动作.(说话时不一定在进行)
The problem of food safety is being studied by scientists at present.
③表示一种习惯的被动行为(always, constantly ),带有赞扬、羡慕、讨厌等感彩。
Children of our neighbors are always being praised by our parents.
④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。
This door was being opened by Li Ming.
This door was opened by Li Ming.
⑤表示被动结构“be +under/ in等介词+名词”
结构可替换进行时被动语态。
is being attacked
1. 目前这个城市正受到进攻。
The city is under attack at the moment.
2. 桥梁正在建筑中。
The bridge is under construction.
is being constructed
They are being hunted, illegally, for their valuable fur.
Much is being done to protect wildlife.
Choose the suitable verb forms to complete the sentences.
.
1. I’m (working/being worked) at home today because my office is (painted/being painted).
2. The alarming report is (written/being written). It’ll be finished soon.
3. What part of the city is (attacked/being attacked) now
TIPS:
1. Read the sentence carefully to make sure whether it is proper to use present continuous tense.
2. Analyze the relationship between the subject and its verb to decide whether it is proper to use passive voice.
4. Right now, the deer are (watched/being watched) over by many volunteers.
5. Who is (hunting/being hunted) the kangaroos Where are they (hunted/being hunted)
6. It’s reported that living spaces for wildlife are (reduced/being reduced) due to the cutting of trees.
wetland
Is the scenery fascinating
However, something terrible is being done to the wetland ...
In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, insects and so on. When I was in primary school, I often went there with my friends to watch the birds and study them. It was an interesting place for all of us. But things have begun to change in recent years.
Liu Tao would like to express his concern over the wetland in his hometown. Help him finish the passage with the present continuous passive voice of the verbs in brackets.
Small birds ________________ (catch) with nets. Wild ducks _____________ (sell) at food markets. Fish and snakes _______________ (kill) for food in restaurants. And even worse, the wetland _________________ (destroy). Some parts _________________ (cover) with new houses. You can see rubbish everywhere. The wetland ________________ (polute) seriously every day. I am very worried about it. What can we do
are being caught
are being sold
are being killed
is being destroyed
are being covered
is being polluted
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. It is reported that many a new house _____ at present in the disaster area.
A. are being built B. were being built
C. was being built D. is being built
2. — Hi, Terry, can I use your computer
for a while this afternoon
— Sorry. _____.
A. It’s repaired
B. It has been repaired
C. It’s being repaired
D. It had been repaired
3. Would you please keep silent The weather report _____ and I want to listen.
is broadcast
B. is being broadcast
C. has been broadcast
D. had been broadcast
肯定结构 be (am/is/are) being done
否定结构 be (am/is/are) +not+being done
一般疑问结构 Be (am/is/are) +主语+being done
特殊疑问结构 特殊疑问词+be(am/is/are)+主语+being done
Summary
句中常用now, right now, at this moment, at present等时间状语。
表示一种习惯的被动行为(always, constantly ),带有赞扬、羡慕、讨厌等感彩。