资源简介

(共60张PPT)
Unit 2
Wildlife Protection
Period 3 Discovering Useful Structures
课前自主预习
New words
重点 词汇 1.　　　　　 n.鹿
2.　　　　　 n.袋鼠
3.　　　　　 vt.减少
4.　　　　　 adj.由于；因为
5.　　　　　 n.昆虫
6.　　　　　 n. ＝Internet 网 adj.净得的；纯的
7.　　　　 　 n.临近的地方；街区
deer
kangaroo
reduce
due
insect
net
neighbourhood
Let′s play
1. When Mary was playing by the woods，she happened to
see a 　　　　　(袋鼠) come by.
2. The design of the bicycle has managed to ___________
(减少) the effects of wind resistance.
一、单词拼写
kangaroo
reduce
3. The students in our class often do volunteer work in the
__________________(街区).
4. I have never seen this kind of　　　　　(昆虫) before.
neighbourhood　
insects
二、动词填空
1. I can′t use my car today because it __________________
(repair) in the garage.
2. They have to sit outside because the rooms ___________
__________________ (paint).
3. At present，a meeting ______________(hold) to discuss
the question.
is being repaired
are being painted
is being held
4. Don′t worry. Supper __________________ (prepare) in
the kitchen.
5. Now effective measures __________________ (take) to
prevent the rivers from being polluted.
is being prepared
are being taken
课文呈现
Report an ongoing event
1 Underline the present continuous passive voice
in the sentences and discuss its function.
African elephants are being hunted.
What is being done to help them
What measures are being taken to help them
Find more sentences with the same verb form in this unit.
They are being hunted， illegally，for their valuable fur.
Much is being done to protect wildlife.
2 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 wildlife are (reduced /
being reduced) due to the cutting of trees.
3 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 was in primary school， 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.
are being caught
are being sold
are being killed
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
is being destroyed
are being covered
is being polluted
4 In groups，discuss the questions below.
Prepare to give a presentation of your ideas
to the class.
What do you know is being done in your neighbourhood to protect animals and plants
What suggestions do you have
Suggested Answer
A：What is being done in our neighbourhood to protect
animals and plants
B：Well，the old trees in the park are being protected.
A：Oh yes. They are being protected not only because
they are very old but also because they are the natural
habitat for songbirds.
C：That′s right. Perhaps they could help protect the birds
by making the roads around the park free from cars.
D：Yes，that would certainly help make the air cleaner
for them....
考点精讲
1. reduce vt. 减少
Eg. It is reported that living spaces for wildlife are being reduced due to the cutting of trees.
据报道，由于砍伐树木，野生动物的生存空间正在减少。
【词汇精讲】 reduce 是及物动词，意为“减少”。
One of the most effective ways to reduce stress is to talk about feelings with someone you trust.
减少压力最有效的方式之一就是与你信任的人聊聊感受。
【词汇拓展】
reduce···by··· 把···减少了···
reduce···to···把···减少到···；把···变为某种状态
be reduced to 陷入某种境地 (to 为介词)
Eg. Though the price of the house has been reduced by 10% since 2017，we can′t afford it either.
尽管从2017年以来房价下降了10%，我们还是买不起。
His life in the big city was hard and finally he was reduced to begging in the streets.
他在大城市里的生活艰难，最后被迫在街头乞讨。
既学既练
(1) The housing price was so high that our government did
need to take some measures ____________ (reduce) it.
(2) With great effort，she _______________ (reduce) her
weight by five kilograms in the past month.
单句填空
to reduce
has reduced
(3) It is argued that house prices in big cities should
_________________ (reduce) by 10%
be reduced
2. due adj.由于；因为；到期的；应付的；应有的
Eg. It is reported that living spaces for wildlife are being reduced due to the cutting of trees.
据报道，由于砍伐树木，野生动物的生存空间正在减少。
【词汇精讲】due 是形容词，意为“由于；因为；到期的；应付的；应有的”，常和to连用。
The sports meeting was put off due to the bad weather.
由于天气不好运动会推迟了。
The next train is due in five minutes.
下一班火车预计在五分钟后抵达。
Have they been paid the money that is due to them
付给他们应得的钱了吗
【词汇拓展】
due to 因为
be due to do sth 预定做某事
be due for sth 应有某物；应得到某物
(be) due to sb 应支付/给予/归于某人
The wages due to him will be paid tomorrow.
他应得的工资明天将会付给他。
That money is due to me，but I haven′t got it yet.
那笔钱是应付给我的，而我至今还未拿到。
Look! The front part of the car is now totally out of shape due to the crash.
看!因为撞车，这辆车的前部现在已经完全变形了。
【温馨提示】当 due to 表示“由于；因……造成；应给予”时，其中的 to 是介词，并且在句中常常作表语或状语；当 due to 意为“即将/预期做……”时后接不定式。
既学既练
(1) 由于大雪，这个镇与外界的交通中断了.
The town was cut off from the rest of the world _______________________.
(2) 中国女排的成功归功于全体队员的努力。
Chinese women′s national volleyball team′s success is _________________________________.
due to the heavy snow
due to all the members′ efforts
(3) 公共汽车预计下午五点钟到达，但由于大雾的阻碍
它晚了一个小时.
The bus was ____________________ at 5 pm，but it arrived one hour late due to __________________ by the heavy fog.
due to arrive
being held up
现在进行时的被动语态
【思维导图】
现在进行时的被动语态是中学英语语法中的一种非常重要的英语时态，它属于现在时态。
一、含义与结构
[合作探究]
African elephants are being hunted.
非洲大象正在被猎杀。
What is being done to help them
现在可以做些什么来帮助它们呢？
What measures are being taken to help them
现在可以采取哪些措施来帮助它们呢？
[自主发现1]
(1) 现在进行时的被动语态表示说话人说话时或现阶段
某事____________。
(2) 现在进行时的被动语态的构成：
① be＋being＋done (____________)；
②“be being done” 中的动词______应随主语作相应的变化。
正在被做
过去分词
be
[提醒]　现在进行时的被动语态中不能漏掉“_______”。
being
二、形式
[合作探究]
We′re being killed for the wool beneath our stomachs.
我们因我们肚子底下的羊毛而正被杀害。
The tiger is not being set free at present.
目前这只老虎没有被放出。
Are milu deer being sent to China from Britain
麋鹿是从英国运到中国的吗？
What is being done for the milu deer
现在为麋鹿正在做些什么呢？
[自主发现2]
现在进行时的被动语态的主要形式有：肯定式；否定式；疑问式。它们的具体构成如下：
(1)肯定式：主语＋____________＋____________
(2)否定式：主语＋____________＋____________＋____________.
am/is/are
being done
am/is/are
not
being done
(3) 疑问式：________疑问式 [“Am/Is/Are＋(not)＋主语＋being done”]；________疑问式[“特殊疑问词＋am/is/are＋(not)＋being done”]。
一般
特殊
三、用法
1. 基本用法
[合作探究]
She is being examined by the doctor now.
她现在正在接受医生的检查。
Look! The children are being taken care of by their aunt.
看！孩子们正由他们的姑妈照顾。
[自主发现3]
表示________正在进行或发生的被动动作，常与 now，right now，at present，at the moment 等时间状语词连用。
现在
[合作探究]
A new factory is being built.
一座新的工厂正在建设中。
They are being taught English at present.
目前他们正在被教学英语。
表示__________或___________________正在进行的被动动作，但这一被动动作在此时此刻不一定正在发生。
[自主发现4]
现阶段
目前这段时间
[合作探究]
Tom is always being praised by the teacher.
汤姆总是被老师表扬。
He is often being bullied by other boys.
他经常被别的男孩子欺负。
表示一种____________________的被动行为，常与always，often等词连用，往往带有赞扬、责备、厌烦或埋怨等感彩。
[自主发现5]
经常性或习惯性
2. 特殊用法
[合作探究]
The problem is under discussion now.
＝ The problem is being discussed now.
这个问题正在讨论中。
Some rock music is being played by them next.
下面将由他们演奏一些摇滚音乐。
John is not here. He must be being interviewed.
约翰不在这里，他一定正在接受采访。
[自主发现6]
(1) “___________________”的结构可以表示现在进行时的被动语态的含义。
(2)少数及物动词的进行时的被动语态表示某物________________将要承受某个动作。
(3) 含情态动词的现在进行时的被动语态表示对现在正在发生的被动行为的________。
be＋under/in/on＋n.
按计划、安排
推测
既学既练
一、用所给词的适当形式填空.
① An interesting experiment _______________ (carry) out now.
② We can hear that the papers __________________ (print) quickly on the fast-moving printing machines.
is being carried
are being printed
③ What you ______________ (tell) is true.
④ Some animals _____________________ (not protect)
well enough.
are being told
are not being protected
二、同义句转换
① They are studying the life of the panda at present.
→The life of the panda _____________ at present by them.
② The doctor is operating on the patient inside now.
→The patient _____________________ by the doctors inside now.
is being studied
is being operated on
③ Are they building the bridge at present
→Is the bridge ________________ by them at present
being built
三、单句语法填空/补全句子
① A lot of wild animals __________________ (kill) by
hunters in Africa today.
② I have to go to work by taxi because my car
________________ (正在修理) at the garage.
are being killed
is being repaired
③ How many bridges ________________ (正在修建) in
the village now
④ Look! The foreign guests _______________________
(正在被带领参观) the factory by Mr.Zhang.
are being built
are being shown around
四、补全句子/同义句转换/一句多译.
①— Do you know what Smith is doing
— He is ill. He _____________________by the doctor.
— 你知道史密斯正在做什么吗？
— 他病了。他可能正在接受医生的检查。
may be being examined
② Many new cars are on show.
→Many new cars ___________________________.
③ 今晚将要举办一场晚会。
__________________________________________
＝__________________________________________
＝_____________________________________
are being shown
A party will be held tonight.
A party is going to be held tonight.
A party is being held tonight.
本课结束
This lesson is over
THANKS!

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