课件25张PPT。Sandstorms in Asia
Reading
and
Vocabulary
(1)
Pre-reading Look at the following photo. Answer the questions beside it.
(Pair work)Discuss the questions below in pairs1.What is happening?
2.What is the cyclist wearing and why?
3.What do you think happens to traffic in this situation?
Why?
4.What do you think experts advise people to do in this situation?
Answers:1.What is happening ?
A sandstorm is happening/blowing.
2.What is the cyclist wearing and why?
They’re wearing hoods(头巾),caps,masks dustcoat,gloves and glasses in order to protect themselves.
3.What do you think happens to traffic in this situation?Why?
It moves very slowly. Because it is not easy for people to see everything on the road clearly and people must take great care. 4.What do you think experts advise people to do in this situation?
Stay at home.Listen to the passage carefully and find the answers to the following questions:What’s a sandstorm?
Where in the world are the main four sandstorm areas?
And how about in China?
What’s the weather experts’ advice when a sandstorm comes?
Answers:What’s a sandstorm?
Sandstorms are strong, dry winds that carry sand.
Where in the world are the main four sandstorm areas? And how about in China?
Central Asia,North America,Central Africa and Australia.
Northwest China.
What’s the weather experts’ advice when a sandstorm comes?
They advise us not to go out. If we have to, we’d better wear a mask. Further Comprehension
Read the passage and try to get the main idea of each paragraph.Match the main idea with each paragraph. The main ideas are as follows(如下):Sandstorms have been a major disaster for centuries.
Sandstorms in China have increaced as a result of “desertification
Sandstorms do a lot of damage to people.
Sandstorms in Asia.
Sandstorms sometimes affect Beijing.
The government plants trees to prevent sandstorms.
Answers:Paragraph 1: Sandstorms have been a major disaster for centuries.
Paragraph 2: Sandstorms in Asia.
Paragraph 3: Sandstorms in China have increaced as a result of “desertification”.
Paragraph 4: Sandstorms sometimes affect Beijing.
Paragraph 5: Sandstorms do a lot of damage to people.
Paragraph 6: The government plants trees to prevent sandstorms.
Activity 4(Careful Reading)
Read Sandstorms in Asia again. Complete the sentences in activity 4 on P33.Answers:1.The winds in a sandstorm can sometimes prevent you from seeing the sun.
2.When Ren Jianbo was living in Inner Mongolia he experienced a terrible sandstorm.
3.Sandstorms in China apper to have increased because of desertification.
4.Cutting down trees and digging up grass can cause deserts and sandstorms to increase.
5.Traffic moved very slowly because the drivers can’t see.
6.The government is planting trees to the
west of Beijing to prevent the desert coming nearer.
Activity 3 (Careful Reading )Find the following words in the passage, and then do with activity 3 on Page 33.
sand dunes affect
mask strengthAnswers:1.sand dunes mean sand hills.
2.affect means to cause a change.
3.You wear a mask over your face.
4.strength is the noun of strong.
Activity 2(词汇学习) Match the words with the definitions
(Look at the words in the box on P33)
1.to ride a bicycle _____________
2.someone who knows a lot about a particular subject
_____________
3.Things that happen one after another, and have a result ______________
4.someone who lives in a particular town or country
_______________
5.very small bits of dirt or earth,on the ground
or in the air _______________
6.to continue to live after a difficult or dangerous situation or event ________________
7.to say what will probably happen ______________
8.everything that is happening at a particular
time ________________
cycleexpert
process
citizendustsurviveforecastsituationActivity 5(词汇巩固)
Complete these sentences using words from Sandstorms in Asia. The first letter is provided for you. Answers:1. Weather experts have forecast(ed) another big sandstorm in a week’s time.
2. It’s frightening to be outside in a sandstorm.
3. I was in a very big sandstorm some years ago.Luckily,everyone survived.4. There’s a lot of dust on the floor.We need to sweep it away.
5. Desertification is a long process that takes many years.
6. Many Beijing cyclists/citizens cycle to work. Discussion: What measures should we take to prevent sandstorms coming? We should plant more trees and grow more grass.
Control air and water pollution.
Build green fences along the desert.
Forecast sandstorm’s real time to prevent disaster.
Establish sandstorm data bank and collect information about sandstorms.
All countries should join hands to make a plan in sandstorms control and prevention. 保护环境 人人有责
Proverbs:An hour in the morning is worth two in the evening.一日之计在于晨。
Every man is the architect of his own fortune.自己的命运自己掌握。
Nothing seek, nothing find.没有追求就没有收获。