资源简介

(共22张PPT)
Discovering Useful Structures
新人教必修Book 2
Unit 2 Wildlife Protection
Learning objectives
In this class, you will
identify the present continuous passive voice;
summarise the form and function of the present continuous passive voice;
practice using the present continuous passive voice in sentences and passages;
give a presentation applying the present continuous passive voice to share ideas about protecting animals and plants in your neighbourhood.
What are they doing in the picture
The polar bear .
The panda bamboo.
The elephant sports.
is swimming
is doing
is eating
Review: the present continuous tense
The polar bear is swimming.
The panda is eating bamboo.
The elephant is doing sports.
现在进行时的构成: ___________________
be (am/is /are) doing
Review: the present continuous tense
The whales __________(kill) by
human beings.
are killed
The rhino ____________ (hunt) by someone.
is hunted
Review: the passive voice
The whales __________(kill) by human beings.
were killed
The rhino ____________ (hunt) by someone.
was hunted
被动语态的基本构成: _________________
be + V.ed(过去分词)
Review: the passive voice
（时态和语态结合，先体现时态，后体现语态）
现在进行时：am/is/are + V-ing
被动语态： be + done(V过去分词)
主语 + am/is/are + being + done + (by…)
表进行
表被动
观察总结：现在进行时的被动语态
结构
现在进行时的
被动语态：
现在进行时的被动语态
Present Continuous Passive Voice
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。
Summary
2. 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
1. 表示说话时正在进行的被动动作，句中常用now, right now, look, at present, at the moment等时间状语连用。
1).He (examine) by the doctor now.
2). Look! The baby ___________________ (take care of) by her aunt.
is being examined
are being cared
3. 现在进行时的被动语态基本用法
2. 表示现阶段正在进行的被动动作(说话时不一定在进行),句中常用at present, these days，these weeks等时间状语。
is being studied
2). The disease _____________ (study) at
present by scientist.
is being studied
1)The problem of food safety _______________(study) by scientists these days.
Children of our neighbors ______ always ____________ (praise) by our parents.
3.表示一种习惯的被动行为(often, always, frequently, constantly ),带有赞扬、羡慕、抱怨，讨厌等感彩。
being praised
are
I don't understand why my bike______ often _____________(steal).
being stolen
is
The children are being taken care of by their aunt.
Children are taken good care of at school.
The report is being written by one of the students.
The report is well written.
Attention
1.不可遗漏being
take care of, look after ,talk about，think of 等动词与介词构成的短语用于现在进行时的被动语态时，其中的介词不可省略
2.部分介词短语介词不可省略
Look! The baby is being taken care by her aunt.
of
This topic is now being talked about.
这个话题正在被讨论。
3.部分动词无进行时的被动语态
阅读句子，指出其错误。
Mary, come here.You're being wanted on the phone.
Mary, come here.You're wanted on the phone.
一些表示状态、心理活动、拥有、存在等的动词，
如have，want, need, like,realize等，一般没有进行时的被动语态，而常用一般现在时的被动语态表示此时此刻或目前主语正在承受谓语动词表示的动作。
√
(4) 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
例：
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
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
will be finished soon.
3. What part of the city is (attacked /being attacked)
now
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 is reported that living spaces for wildife are
(reduced/being reduced) due to the cutting of trees.
Practice
请找出下列各句中的错误并改正。
1. Look! A frog is swallowed by a snake over there.
2. These animals are hunting at such a speed that
they will disappear soon.
3. Will you go with me to see the film that is shown
tonight
4. The man has killed his wife. Now he is being
wanted by the police.
5. Thousands of families are fleeing their homes
because their country is under attacked.
being
being hunted
being
being
用所给动词的正确形式填空。
1. A new cinema___________ (build) here now.
2. A lot of tall buildings ___________ (set) up, and
people will move next year.
3. The disease _______________ (study) by scientists at present.
4. Water ___________ (boil) at 100℃.
5. Pandas ______________ (disappear) in our country year after year.
6. The patient ______________ (examine) now. He will come out soon.
is being built
are being set
is being studied
boils
is being examined
are disappearing
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.
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. That was an interesting place for all of us. But things have begun to change in recent years. 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 _____________ (pollute) 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
is being polluted
are being
covered
Thank you!

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