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初中英语仁爱科普版九年级上册Topic 3 The world has changed for the better.教学ppt课件
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这是一份初中英语仁爱科普版九年级上册Topic 3 The world has changed for the better.教学ppt课件，文件包含65Unit2Topic3SectionC课件ppt、p47-1amp3、p47-1awmv等3份课件配套教学资源，其中PPT共35页， 欢迎下载使用。
What resurces did peple in many cuntries use t prduce pwer in the past?
What d we use nw?
Wind is used fr prducing electricity in many places.
Lk at the fllwing pictures and guess the meaningf the underlined wrd.
electricity n. 电，电流
electric (adj.) — electricity (n.)
It’s an electric car. It wrks well, but its disadvantage is that it’ slw and Can’t run fr lng.
n. 不利因素，不便之处，障碍
Nuclear pwer is clean but it is very dangerus.
nuclear 原子核的，原子能的
[ˈnjuːklɪə]
…peple prduce pwer frm cal, but it is verydirty and causes acid rain.
pwer n.动力，力量
acid rain 酸雨
It’s a maglev train. Its advantages are quiet, fast and clean, but it’s t expensive.
D yu knw it ?
China is ne f the first cuntries in the wrld t use bigas technlgy .
['baɪəʊˈɡæs
Task 1. Lk at the pictures. D yu knw what they are? Chse the right picture fr each paragraph.
paragraph 2
paragraph 3
Paragraph 4
Task 2. Read 1a and match the wrds with the pictures n Page 48.
A. acid rain B. nuclear energy C. bigas
adj.原子核的，原子能的
Task 3. Careful reading
Read Paragraph 1 again, and then mark True (T) r False (F).
( ) It’s gd that peple prduce pwer frm cal. ( ) Nuclear pwer is dangerus. S we can’t use it. ( ) T slve the energy prblem, peple all ver the wrld are lking fr new ways t prduce pwer.
Paragraph 1
Paragraph 2
Chse the best answers.
( )2. Farmers recycle _______ t make bigas.
B. animal waste
D. All f the abve
( )3. Which f the fllwing is TRUE accrding t the passage?
A. Bigas is used in peple's everyday lives.
B. The cst f bigas is nt very high.
C. The prcess f making bigas requires a shrt time.
D. It takes peple at mst 20 days t make bigas.
( )1. Which cuntry is the first t use bigas?
Paragraph 3
Electric vehicles were __________ in the 1990s. On April 11, 2010, a new kind f electric vehicle _______ “Yezi” was shwn in the 2010 Shanghai Wrld Exp. It prduces _________ frm the sun, the wind and CO2. It can nt nly prtect the envirnment but als _____ energy. It’s t small t hld many peple, but _______ mdels will be develped in the near future.
develp, electric, name, save, large
electricity
1.去30公里以外的飞机场只需花费人们七分钟的时间。
It takes peple just 7 minutes t g t the airprt 30 km away.
2.火车最高时速能够达到每小时431公里。
The train can reach a tp speed f 431 km per hur.
Find ut the English fr the tw sentences.
Task 4. Read 1a again and cmplete the table.
lng prcess and high cst fr its building
save energy, n pllutin
t small t hld many peple
quiet, quick, energy-efficient, n pllutin
much mre expensive than traditinal steel railways
1.用某物做某事2.被用来做某事3.过去常常做某事4.适应于做某事5.全世界6.寻找7.达到...的数量之一9.太...而不能
use sth t d/fr ding sthbe used t d/fr ding sthused t d sthbe/get used t ding sthall ver/arund the wrldlk frup f+n复+
Task 5. Read 1a and find the fllwing phrases.
10.一种不但...而且12.在不久的将来13.达到...的速度14.以...的速度15.用完，用光，耗尽
a kind fnt alsin the near futurereach a fat a speed frun ut
1. Sme cuntries use nuclear energy t prduce pwer.思考：使用某物来做某事___________________/___________________练习：a.在过去人们使用竹子写字.Peple _______ bamb ___ ______ with in the past. b.人们用风发电。Peple _____ wind _______ prducing electricity.
use sth. t d sth.
use sth. fr ding.
t write
Task 6. Language pints
2. Its key disadvantage is that the prcess requires a lng time (up t 30 days )and the cst is high.它最大的缺陷是生产过程需要很长时间（长达30天）和成本高。
prcess n.步骤，过程 v.加工，处理
require v.需要，需求
require 有两种用法： *require (ding) sth. 表示主语“该...了”。 flr requires washing. 地板该洗了。 *be required t d sth.表示主语必须（被要求） are required t attend classes. 学生必须按规定上课。
3. The train can reach a tp speed f 431 km per hur. 点拨：reach a speed f+具体速度 ---达到某个速度链接：at a speed f + 具体速度----以某个速度, 可用high, lw, full等形容词修饰speed 。练习：a.北京至天津线火车时速达到每小时300千米。Beijing-Tianjin train ______ ___ _______ ____ 300 km per hur.
reaches a speed f
Germany n. 德国
pl. Germans
wheel n. 轮， 车轮， 轮子
e.g. They are Germans, and they are frm Germany.
Task 7. Read the passage belw and match the pictures with the sentences. Then discuss in detail the use f ne energy surce.
Wind can prduce electricity in many places. Peple use sunlight t prduce electricity. Sea waves are used fr prducing electricity. Peple use ht water r steam frm deep in the earth t prduce electricity and heat fr factries, schls and hmes.
Task 8. Read the passage belw and find the key pints .
The sun, wind, waves and heat frm deep in the earth are energy surces. They will never run ut s they are called renewable surces. In 2011, abut 16% f energy used wrldwide came frm renewable surces. The use f it is increasing rapidly each year.
deep adj.深的，厚的 adv.深深地， 在深处
run ut 用完，耗尽e.g. He has run ut f fd, s his children are hungry.
run ut /run ut f 用完，耗尽 run ut 主语为物，且无被动。 run ut f 主语为人 我们的食物已经用完了。Our fd has already run ut.=We have already run ut f the fd.
Task 9.Take ntes n yur discussin and write a passage with them.
Yu may begin like this: Sunlight can prduce a lt f energy. Peple began t use the energy frm the sunlight in different ways many years ag…
Sunlight can prduce a lt f energy. Peple began t use the energy frm the sunlight in different ways many years ag. We can use it t warm the huse in the winter, t heat the water fr baths, and t prduce electricity. What’s mre, we can even use it t run vehicles directly in the near future. As is knwn t us, the energy frm the sunlight has a lt f advantages. Fr example, it is clean, renewable and nn-plluting. Besides, it des n harm t ur nature. S we’d better use it as much as pssible.
Yu can write it like this:
1. Sme wrds: technlgy, wheel, steel, require, German, guide , deep 2.Sme phrases: run ut 3.Sme sentences: (1)In many cuntries, peple prduce pwer frm cal, but it is very dirty and causes acid rain. (2)They will never run ut s they are called renewable surces.
Talk abut the advantages and disadvantages f sme kinds f energy.
Fill in the blanks with crrect frms.
As is knwn t all, the ld ways t prduce pwer can be dangerus r pllute the envirnment. S peple have t lk fr new ways t p_______ pwer. Nwadays, farmers r_______ straw, grass and animal waste t make bigas. The renewable energy is used in ur daily lives. China is ne f the first cuntries t use bigas ___________ . A new kind f electric vehicle named Yezi was shwn in the 2010 Shanghai Wrld Exp. It prduces electricity frm the sun, the wind and CO2. It can nt nly prtect the envirnment but als save energy. In Shanghai, the G_______-built maglev train is quiet and quick. There is n air and nise pllutin because maglev trains have n ________(轮子). In a wrd, we shuld try ur best t use renewable energy. It can bth prtect the envirnment and save energy.
/tek'nɒlədʒi/
Read 1a.Memrize the useful expressins and key sentences which we learn tday.Finish Sectin C in yur wrkbk.Review Sectin A-C.
What resurces did peple in many cuntries use t prduce pwer in the past?
What d we use nw?
Wind is used fr prducing electricity in many places.
Lk at the fllwing pictures and guess the meaningf the underlined wrd.
electricity n. 电，电流
electric (adj.) — electricity (n.)
It’s an electric car. It wrks well, but its disadvantage is that it’ slw and Can’t run fr lng.
n. 不利因素，不便之处，障碍
Nuclear pwer is clean but it is very dangerus.
nuclear 原子核的，原子能的
[ˈnjuːklɪə]
…peple prduce pwer frm cal, but it is verydirty and causes acid rain.
pwer n.动力，力量
acid rain 酸雨
It’s a maglev train. Its advantages are quiet, fast and clean, but it’s t expensive.
D yu knw it ?
China is ne f the first cuntries in the wrld t use bigas technlgy .
['baɪəʊˈɡæs
Task 1. Lk at the pictures. D yu knw what they are? Chse the right picture fr each paragraph.
paragraph 2
paragraph 3
Paragraph 4
Task 2. Read 1a and match the wrds with the pictures n Page 48.
A. acid rain B. nuclear energy C. bigas
adj.原子核的，原子能的
Task 3. Careful reading
Read Paragraph 1 again, and then mark True (T) r False (F).
( ) It’s gd that peple prduce pwer frm cal. ( ) Nuclear pwer is dangerus. S we can’t use it. ( ) T slve the energy prblem, peple all ver the wrld are lking fr new ways t prduce pwer.
Paragraph 1
Paragraph 2
Chse the best answers.
( )2. Farmers recycle _______ t make bigas.
B. animal waste
D. All f the abve
( )3. Which f the fllwing is TRUE accrding t the passage?
A. Bigas is used in peple's everyday lives.
B. The cst f bigas is nt very high.
C. The prcess f making bigas requires a shrt time.
D. It takes peple at mst 20 days t make bigas.
( )1. Which cuntry is the first t use bigas?
Paragraph 3
Electric vehicles were __________ in the 1990s. On April 11, 2010, a new kind f electric vehicle _______ “Yezi” was shwn in the 2010 Shanghai Wrld Exp. It prduces _________ frm the sun, the wind and CO2. It can nt nly prtect the envirnment but als _____ energy. It’s t small t hld many peple, but _______ mdels will be develped in the near future.
develp, electric, name, save, large
electricity
1.去30公里以外的飞机场只需花费人们七分钟的时间。
It takes peple just 7 minutes t g t the airprt 30 km away.
2.火车最高时速能够达到每小时431公里。
The train can reach a tp speed f 431 km per hur.
Find ut the English fr the tw sentences.
Task 4. Read 1a again and cmplete the table.
lng prcess and high cst fr its building
save energy, n pllutin
t small t hld many peple
quiet, quick, energy-efficient, n pllutin
much mre expensive than traditinal steel railways
1.用某物做某事2.被用来做某事3.过去常常做某事4.适应于做某事5.全世界6.寻找7.达到...的数量之一9.太...而不能
use sth t d/fr ding sthbe used t d/fr ding sthused t d sthbe/get used t ding sthall ver/arund the wrldlk frup f+n复+
Task 5. Read 1a and find the fllwing phrases.
10.一种不但...而且12.在不久的将来13.达到...的速度14.以...的速度15.用完，用光，耗尽
a kind fnt alsin the near futurereach a fat a speed frun ut
1. Sme cuntries use nuclear energy t prduce pwer.思考：使用某物来做某事___________________/___________________练习：a.在过去人们使用竹子写字.Peple _______ bamb ___ ______ with in the past. b.人们用风发电。Peple _____ wind _______ prducing electricity.
use sth. t d sth.
use sth. fr ding.
t write
Task 6. Language pints
2. Its key disadvantage is that the prcess requires a lng time (up t 30 days )and the cst is high.它最大的缺陷是生产过程需要很长时间（长达30天）和成本高。
prcess n.步骤，过程 v.加工，处理
require v.需要，需求
require 有两种用法： *require (ding) sth. 表示主语“该...了”。 flr requires washing. 地板该洗了。 *be required t d sth.表示主语必须（被要求） are required t attend classes. 学生必须按规定上课。
3. The train can reach a tp speed f 431 km per hur. 点拨：reach a speed f+具体速度 ---达到某个速度链接：at a speed f + 具体速度----以某个速度, 可用high, lw, full等形容词修饰speed 。练习：a.北京至天津线火车时速达到每小时300千米。Beijing-Tianjin train ______ ___ _______ ____ 300 km per hur.
reaches a speed f
Germany n. 德国
pl. Germans
wheel n. 轮， 车轮， 轮子
e.g. They are Germans, and they are frm Germany.
Task 7. Read the passage belw and match the pictures with the sentences. Then discuss in detail the use f ne energy surce.
Wind can prduce electricity in many places. Peple use sunlight t prduce electricity. Sea waves are used fr prducing electricity. Peple use ht water r steam frm deep in the earth t prduce electricity and heat fr factries, schls and hmes.
Task 8. Read the passage belw and find the key pints .
The sun, wind, waves and heat frm deep in the earth are energy surces. They will never run ut s they are called renewable surces. In 2011, abut 16% f energy used wrldwide came frm renewable surces. The use f it is increasing rapidly each year.
deep adj.深的，厚的 adv.深深地， 在深处
run ut 用完，耗尽e.g. He has run ut f fd, s his children are hungry.
run ut /run ut f 用完，耗尽 run ut 主语为物，且无被动。 run ut f 主语为人 我们的食物已经用完了。Our fd has already run ut.=We have already run ut f the fd.
Task 9.Take ntes n yur discussin and write a passage with them.
Yu may begin like this: Sunlight can prduce a lt f energy. Peple began t use the energy frm the sunlight in different ways many years ag…
Sunlight can prduce a lt f energy. Peple began t use the energy frm the sunlight in different ways many years ag. We can use it t warm the huse in the winter, t heat the water fr baths, and t prduce electricity. What’s mre, we can even use it t run vehicles directly in the near future. As is knwn t us, the energy frm the sunlight has a lt f advantages. Fr example, it is clean, renewable and nn-plluting. Besides, it des n harm t ur nature. S we’d better use it as much as pssible.
Yu can write it like this:
1. Sme wrds: technlgy, wheel, steel, require, German, guide , deep 2.Sme phrases: run ut 3.Sme sentences: (1)In many cuntries, peple prduce pwer frm cal, but it is very dirty and causes acid rain. (2)They will never run ut s they are called renewable surces.
Talk abut the advantages and disadvantages f sme kinds f energy.
Fill in the blanks with crrect frms.
As is knwn t all, the ld ways t prduce pwer can be dangerus r pllute the envirnment. S peple have t lk fr new ways t p_______ pwer. Nwadays, farmers r_______ straw, grass and animal waste t make bigas. The renewable energy is used in ur daily lives. China is ne f the first cuntries t use bigas ___________ . A new kind f electric vehicle named Yezi was shwn in the 2010 Shanghai Wrld Exp. It prduces electricity frm the sun, the wind and CO2. It can nt nly prtect the envirnment but als save energy. In Shanghai, the G_______-built maglev train is quiet and quick. There is n air and nise pllutin because maglev trains have n ________(轮子). In a wrd, we shuld try ur best t use renewable energy. It can bth prtect the envirnment and save energy.
/tek'nɒlədʒi/
Read 1a.Memrize the useful expressins and key sentences which we learn tday.Finish Sectin C in yur wrkbk.Review Sectin A-C.
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