高二选修6Unit4 globalwarming录像课2016.10.17

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Welcome!*_**学

王某某人教课标

高二 选修 6

Unit 4Learning goals:  1.Try to surf online to collect useful information before class.

2.To develop students’ reading skills.

3.Learn to use the following phrases to retell the passage.  come about, quantities of, go up, result in,

subscribe to, be opposed to, build up, keep on …

4.Arouse students’ awareness of

protecting the earth.

1.化石燃料

2.副产品

3.温室效应

4.温室气体

5.甲烷，沼气

6.自然现象 fossil fuels

byproduct

greenhouse effect

greenhouse gases

methane

natural

phenomenon

Preview ( key words )1.发生；造成

2. 大量的

3.上升；增长；升起

4. 导致

5.同意；赞成；订购

6. 反对

7.增加，聚集8.继续 come about

quantities of

go up

result in

subscribe to

be opposed to

build up

keep on

Preview ( useful phrases )Group work:

Competition6分4分4分2分6分Leading in (5ms)2分 Which of these is an example of climate? A. A windy day

B. A rainy day

C. A hot summer

D. A sunny daycompetition★ (2分)competitionWhat are fossil fuels?oil

wind (power)

natural gas

coal

sun (solar energy)

water (hydro-electric) □□□★ (2分)□□□What is the “greenhouse effect” ?competition★ ★ (4分) This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapor, trap heat from the sun and therefore warm the earth. What is the greenhouse gases?competition★ ★ (4分) In the atmosphere surrounding the earth there are gases called “greenhouse gases”, including carbon dioxide, methane (甲烷, 沼气) and water vapor.competition List the negative effects of global

warming (at least 3)1.cause the sea level to rise

2.severe storms

3.droughts/floods

4.disappearance of species

5.the spread of diseases

6.famines…

★ ★ ★ (6分)

When do you send gases into the air, which affect the earth?

When we…

watch TV ride a bikeuse an air conditioner□□□□□turn on a lightuse a fridge□use a hair dryer□go skating□microwave a meal□recycle bottlescompetitionplay a video game □★ ★ (6分)Leading in (5ms)Questions:

Sink or swim?

Die or live?

Give up or not?Reading

The Earth Is Becoming

Warmer

---But does it matter?Guess from the title: What is the main topic in the passage?Global warming Skimming (for main idea) (3ms)

Part1

(Para._)

Part2

(Para._ to_)

Part3

(Para._)

Part4

(Para._)

A. two different attitudes

towards global warming.B. whether people should

内容过长，仅展示头部和尾部部分文字预览，全文请查看图片预览。 astrophe result inclimatepositivea greater range of droughtsHomework: In groups, make a poster for the school that tells the students various ways they can reduce the amount of carbon dioxide in the air.Thank you for listening!Bye!

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