Unit 4 Global warmingPeriod 172 Warming up and reading 1 课件（人教课标选修 6 ）

Unit 4 Global Warming

Work in groups ---list things as required :

1. Things that use energy around us or at any other places,( ie. light)

2.Sources of energy (ie. coal)

Warming up – I ( ３ m )

Things that use energy around us or at any other places:

In a house

Things that use energy

Sources of energy

lights

television

cassette player

computer

fridge

stove

washing machine

hairdryer video recorder

coal oil

natural gas

wind(power)

sun(solar energy)

water(hydro-electric power)

the sea ( tidal energy)

uranium(nuclear energy)

plant waster(biomass energy)

Windmills, renewable.

What? Renewable?

Warming up – II ( 5 m )

What? What kind? Renewable?

A coal power station , non-renewable.

What? What kind? Renewable?

An oil refinery( 精炼厂 ), non-renewable.

What? What kind? Renewable?

A nuclear power plant, non-renewable.

What? What kind? Renewable?

A hydro-electric dam, renewable.

Guess it!

• Uranium Ore ( 铀矿石 )• The element uranium does not occur in pure form

in nature but is found in minerals such as carnotite （钒钾铀矿 ), pictured here.

What source of energy?

Geysers( 间歇泉 )

Geothermal ( 地热的 ) Energy Plant

• Coal• Oil• Natural gas• Uranium

• Wind (wind power)• Sun (solar energy)• Water (hydro-electric

power)• Plant waste (biomass

energy)• Hot springs or

geysers (geothermal energy)

• The sea (tidal energy)

Fossil fuels

Non-renewable Renewable

What are fossil fuels?

Ancient animal and plant material below the surface of the earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non-renewable energy because once they are used they have gone forever; they cannot be renewed.

What about the weather?

9 / 14℃ ℃

We need…

Pre-reading ( 3m )

The sun

How about the plants?

If lack of solar energy, the plants…

Greenhouse

Greenhouse gases!

• What are greenhouse gases?

• What’s greenhouse effect?

Let’s see the following picture about it.

The earth is becoming warmer—but does it matter?

Reading

Read the passage again to find out the answers to the questions in Ex.1

Reading I –scanning (5m)

1.Who wrote the magazine article? What is the name of the magazine?

2.What are the names of the three scientists mentioned in the article?

Sophie Armstrong. Earth Care.

Dr Janice Foster, Chrles Keeling, George Hambley.

3. What do they think about global warming? Do they agree with one another?There are some very different attitudes among scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it.

4. What are the two graphs about?

5. What is the main topic of the article?

The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.

Global warming / the warming of the earth.

Read the passage carefully and judge whether the statements are true or false?

1. The temperature in the last century did not seem to increase much.

2. Everyone believes that global warming is caused by the activities of humans.

3. Janice Foster believes that she can measure the future global rise in temperature.

Reading II-skimming (5m)

F

T

T

4.The rise in carbon dioxide is causing a steady inc

rease in global warming.

5.George Hambley believes that global warming wi

ll do good rather than harm to the earth.

6. It is clear what the effects of global warming wil

l be.

T

T

F

1. Who found out the amount of carbon dioxide

in the atmosphere from 1957 to 1977?

A. Dr. Janice Foster.

B. Charles Keeling.

C. George Hambley.

D. Sophie Armstrong.

B

Reading IV (3m)

2. The author probably agrees that ________A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about the effects of global warming.D

The different ideas between Dr. Janice Foster & George Hambley

Dr. Janice Foster George Hambley

Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________.

More carbon dioxide is a __________ thing,

which makes crops __________ and will encourage ____________________________.

go up

catastrophe

very serious

positive

produce more

a greater range of animals

Reading V (4m)

Summary

Skim over the passage, and tell what you have learnt in class.

Try to talk in general terms rather than in details.

eg: I learnt that the earth is becoming warmer.

I learnt that global warming could have terrible effects on the environment.

….

DebateA

B

A : We shall do something about global warming.

B: We shall do nothing about global warming.

Assignment

1.Read the passage again and review the new words and expressions.

2.Prepare the debate in groups.

3.Surf the internet for more information about global warming.

1. …it is a rapid increase when compared to other natural changes.

compare A to B

compare A with B

：把 A 比作 B ，一般要有相似之处，显示某人或某物与他人或他物相同。

：把 A 和 B 进行比较eg: 我们常把儿童比作花朵。

eg: 如果你把这本字典和那本比较一下，你就会发现许多不同之处。

We often compare children to flowers.

If you compare this dictionary with that one, you’ll find many differences.

Language points for Reading I

2.So how has this come about and does it matter?

come about : 发生，造成 相当于 happen

eg: 你能告诉我事情是怎么发生的吗？

eg: 随着电的使用，种种大变化发生了。

Can you tell me how the accident came about ？

With the use of electricity, great changes have come about.

come out

come up

出现；（消息）传开；（观点）公开发生、举行；（在空中）出现

3. random adj & n.

Adj. 随意的，任意的

eg: The information is processed in a random order. 这些信息是随机处理的。

n. at random 随意地eg: 我随意点了个人。 I called one at radom.

4. phenomenon n. 现象；

奇迹，罕见的人才或事物eg: 雨雪是天气现象。Rain and snow are phenomena of the weather.

eg: 不应该简单地视未婚妈妈为一种社会现象。 Unmarried mothers should not be regarded

simply_____________________.eg: 贝多芬是音乐家中的天才。 Beethoven was________________ among mu

sicians.

复数形式 pl. phenomena

as a social phenomenon.

a phenomenon

5. subscribe v. 不及物动词，后接 to1> 订阅，订购（报纸等）eg: 我今年订了中国日报。I subscribed to China Daily this year.

2> 捐赠。3> subscribe to sth 赞成 同意 sthHe subscribe to what I said.他同意我说的。

6. tend

1> v. 后跟 to 常常会，eg: 女人往往比男人长寿。Women tend to live longer than men.

2> v. 后跟介词 eg: 近年来物价趋于上升。The prices have tend towards over recent years.3> vt. 照顾，伺候n. tendency 倾向 偏好 adj. tender 温柔的辨析：trend n. 趋向

7. result in 产生，导致 (= cause / lead to )

主语： in 的宾语：

eg: 努力终归成功。

Hard work results in success.

result from

主语： |from 的宾语：

起因 结果

由…引起，产生结果 起因

His sickness was caused by eating too much.

= His sickness resulted ______eating too much. (in / from)

from

5. state v. 陈述，声明；

n. 状况，情况；国家；

+n.

state +that 从句

+wh- 从句；

可用于被动结构，也可用过去分词作定语。

n. statement 声明，陈述

+n.

state +that 从句

+wh- 从句；1. 他已公开声明他会支持那项政策。

He has publicly ______ _____ _____ for the policy.stated his support

2. 我听见那位官员说不接纳儿童。I heard the official state that they would not accept children.3. 合同清楚地叙述了那项工作应在何时完成。The contract stated when the work should be finished.

eg: 她今天心情不好。

eg: 国家首脑

n. 状况，情况；国家

She is in a terrible state today.

the head of state

6. range v.排列 , 使成行；偏袒，站在…的方面。 n. 范围 (尤指从…到…各种种类 , 可供选择的范围等，可加不定冠词 ) ；排列 beyond the range of… out of one’s range

超越……的范围某人达不到的

eg: 这家商店商品品种多。

The shop keeps____________________.

eg: 年龄范围自 6岁到 12 岁。

_____________is from six to twelve years old.

a wide range of goods

The age range

v.排列 , 使成行；偏袒，站在……的方面。

主要搭配为： +名词 /代词； + 介词 +名词 /代词；常可用于 : 1. 被动结构 2. range oneself ； 3. range from… to … / between… and … 从……到……不等。eg: 老师令其学生沿着小径排队。The teacher _________________along the path.eg: 温度在 15度到 35度之间。The temperature__________________________.

eg: 我们应当列身于法律与秩序的一边。We should _____ _____________ on the side of law and order.

arrange ourselves

ranged his students

ranges from 15 to 35 degrees

7. matter v. : 要紧；有关系。

• eg: 我认为除了他自己以外，没有人对她来说是重要的。

• I don’t think anybody matters to her apart from herself.

相当于 important 。

8. build up 逐步建立，增加，增进

build up one’s fortune

build up one’s strength

eg: 累积财富

养精蓄锐

9. keep on

eg: 他们虽然很累了，还是继续工作。

继续 +doing sth.

坚持

They keep on working although they are tired.

keep up