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第三册


Module 4
Sandstorms in Asia

What is the biggest problem facing the earth?

pollution

pollution

earth

air

water

Water pollution

Air pollution

Desertification

How a green world We must do some-(土壤)荒漠化,沙漠化 becomes a desert? thing to stop it!

Watch the video <sandstorm>


北京2004年3月20日消息:



今年入春以来范围最大、强度最强,影响 最严重的沙尘天气今天上午袭击北京。 今天上午九时开始,北京开始笼罩在一片昏 暗之中,空气中弥漫着呛人的沙尘。 据中央气象台专家介绍,受强冷空气和蒙古 气旋影响,从18日下午至今天上午8时,西北地 区大部、华北北部和西部自西向东先后出现了扬 沙或沙尘暴天气,并伴有5至7级间8级大风。其 中,甘肃中西部、宁夏北部、内蒙古中西部和东 部偏南地区沙尘暴比较严重,半数以上的地区出 现了能见度不足500米的强沙尘暴,局部地区还 出现了能见度小于50米、甚至0米的强沙尘暴。

The sandstorm in Beijing

the sandstorm in Gansu

1, Complete the sentence using the

correct form of these words ( answers)

? sandstorm

? ? ? ?

has been blowing / has lasted frightening was blowing buried

Sandstorms in Asia
strong,dry winds that carry sand, Phenomena terrible, the most frightening, dangerous (现象) places Central Asia North America

causes 引起

Australia Desertification, climate changes cut down trees, dig up grass an orange sky, strong winds cover … in a thick, brown-yellow dust move slowly,difficult to see,breathe,ill not to go out , wear a mast

Central Africa

effects 影响 advices solution (解决方案)

plant trees

1,

Look at the photo. Answer these questions.

( answers )

? 1) There is a sandstorm blowing. ? 2) They`re wearing hoods, masks and
glasses to protect themselves. ? 3) It moves very slowly. Because it is not clear to see everything on the road and people must take great care. ? 4) Stay at home.

2, Match the words with the definitions (answers)

? 1, cycle ? 2, expert ? 3, process ? 4, citizen ? 5, dust ? 6, survive ? 7, forecast ? 8, situation

4, Complete these sentences
? 1) ..prevent you from seeing the sun. ? 2) ..he experienced a terrible sandstorm. ? 3) ..because of desertification. ? 4) ..cause deserts and sandstorms to
increase. ? 5) ..the drivers cannot see. ? 6) ..prevent the desert coming nearer.

5, Complete the sentence using the words from the text.

? 1, forecast (ed) ? 2, frightening ? 3, survived ? 4, dust ? 5, process ? 6, cyclists / citizens

language points: ① major
adj. 较多的;较大的;

主要的;主修的 ** 主要目的是帮助穷人。

The major aim is to help the poor people.
** 主修课程

the major subjects

2,

be caught in 被困在…….中

**他上星期被雨淋了,患了感冒。

? He was caught in the storm last week
and caught a cold.

? catch up with ? catch hold of ? catch fire ? catch sight of

赶上 抓住 着火 看见

3 situation

n. 位置,地位,形势,情况,处境

**这个房子的地点很好。 **形势非常复杂。
**政治局势

? The house has a fine situation. ? The situation was complicated.
? political situation **经济局势 ? economic situation

4, survive

vt.& vi. 活下来,幸存,保存下来

**洪水过后,幸存者极少。

? Few survived after the flood.
**在那次可怕的事故中只有一个人生还。

? Only one person survived the terrible
accident.

? survival

n. 幸存者

** as a result 结果
**出了一起交通事故,结果5人丧身。

? An accident took place, as a result
five people were killed. ? as a result of=because of 由..产生的结果
**他因病不能工作

? He could not work as a result of his
illness.

** wake up to

认识到,意识到,发觉

? 直到参加工作他才意思到学习的重要性。

? He didn`t wake up to the importance
of study until he joined in the work. ** wake up 醒来,叫醒 Don`t make a noise or you will wake the baby up.
别出声,要不然会吵醒孩子的。

..because the thick dust makes it difficult to see.
**

make it + adj. + to do….

? it 是形式宾语,adj. 作补语,to do是真正宾语

**他的解释使得我们对课文的理解别得容易起来。

? His explanation made it easy for us
to understand the text.

** surprise
** vt. 使惊奇,使震惊;感到惊奇 使我惊奇的是他英语说得那么好。

? What surprised me was that he spoke
English so well.

? I`m surprised to hear you say that.
** n.惊奇,诧异;使人惊奇的事,出人意料

听到你说的那件事我很惊奇。

? His face showed surprise at the news.

听到这消息,他脸上露出惊奇的神色。 in surprise 惊奇地 to one`s surprise 使….惊奇的是

** To prevent it coming nearer,..
为阻止沙漠的逼近…. ** prevent…from doing…阻止或防止…干… ? 大雨使他们不能按时到达那里。

? The heavy rain prevented them from

getting there on time. ** prevent…(from) doing = stop ……(from) doing/keep…from doing
疾病使他无法上学。

? His illness kept him from going to school. ? Sorry to keep you waiting so long.

◎ What causes sandstorms? ◎

◎ What can we do to stop
sandstorms?

Why is more and more land becoming desert?

1:03 结束

soil be blown away

trees be cut down nothing to hold.. soil be washed into…

too many sheep and cattle

all the grass be eaten

grass never grow again ; the land become desert

The area of desert is growing.

What causes sandstorms?
a video tape (沙尘暴的形成)

It can be reduced if we try to “repair” desert and protect areas that are in danger of becoming desert.

We should be more careful with our water, try to use less and recycle as much water as possible.

Water is the source of life, but it is not inexhaustible. If we did not take action now, the last drop of water in the world would be man’s tear!

水是生命之源,但它却不是取之不尽,用之不竭的。 如果我们现在不采取行动,世界上的最后一滴水将 是人类的眼泪!

We should live in harmony with nature.

Help me, help you, help everyone.
Return GREEN to the earth!


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