Unit-22-Lesson-3-Natural-Disasters.ppt
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1、 Teaching objectives In this lesson, we will:1. practise reading strategies to complete texts with sentence gaps.2. talk about disasters with the help of the learnt vocabulary about/concerning natural disasters.Step 1: Lead in: (Lead in the topic & prepare active vocabulary for learning the passage)
2、 Today it is May X, around this time last year, an earthquake attacked Wenchuan. It was on a grand scale. Thousands of people lost their wives, children The separation from their families made them live a rough (or hard) time. During the quake, houses fell down. In the mountainous area stones, brick
3、s slip and slide downhill in the landslides. People lived in shabby houses or tents. However Sichuanese are very strong. With the help of the whole nation, they constructed their homes soon. Now a new Wenchuan stands in front of us.1.grand adj big and very impressive巨大的巨大的2.scale n the size or level
4、 of sth规模,大小规模,大小3.separation n the condition of being separated 分离,分开分离,分开.4.rough adj unpleasant or difficult艰难的艰难的5.mountainous adj having many mountains多山的多山的6.slip v fall off 滑落滑落7.slide v to move smoothly over a surface滑行滑行 8.landslide n sudden fall of a lot of earth or rocks down a hill, clif
5、f 滑坡,山崩滑坡,山崩 9.shabby adj old and in bad condition 破烂的破烂的10.construct v build 建造建造1.grand adj 2.scale n 3.separation n 4.rough adj 5.mountainous adj 6.slip v 7.slide v 8.landslide n 9.shabby adj 10.construct v Do you still remember them?Do you still remember them? Step 2: Task : Learn more about Nat
6、ural Disasters and their causes Besides earthquake, there are many natural disasters, can you name some? earthquake1. Brainstormingtsunami What kind of disaster is it?Flood volcanic eruption Hurricane forest fire typhoonLandslide Vocabulary about natural disasters tsunami 海啸海啸 typhoon 台风台风 volcanic
7、eruption 火山喷发火山喷发 flood 洪水洪水 landslide 滑坡,山崩滑坡,山崩 hurricane 飓风飓风, 狂风狂风 Read aloud and memorize them What do you think causes the disasters, people or nature?2: Further Exploration: Read the article and check your answer - What causes the disasters?3: Check your prediction Both people and nature Step
8、 2: Task : Learn to use Reading Strategies: Completing texts with sentence gaps (In lesson 3, P38, Unit 21, Module 7, we have learn the reading strategies: Sequencing of information, which are quite similar to strategies learnt in this lesson.) (Today lets study lesson 3 “ NATURE IS TURNING ON US.”
9、and do more research into the natural disasters)Reading strategy 1 Read the text to get general idea. (2m) (When you encounter new vocabulary, skip it.) Natural disasters are getting worse because of human activities. Reading strategy 2 Read a paragraph with a sentence gap and identify the topic, e.
10、g disasters .Para 1:Para 2:Para 3:Para 4:Para 5:An example of volcanic eruption & earthquake show their threat to our world.Causes of natural disastersUrbanization & industrialization Overpopulation in cities makes more people in the danger of natural disastersExperts predict that natural disasters
11、willget worse Examples show natural disasters become common3g2f 2nd readingReading strategy 3 Read the sentences before and after the gap and look for clues about the missing sentence , e.g. is it an example of what is mentioned before?Reading strategy 4 Certain words may help you: time references (
12、then), pronoun references (it , that ), linking words (however). namely, Scanning: Look for clues/reference words +1. Tsunamis, flooding underwater B 2. Irrigation canals, water the Yellow River F4.This has been caused by carbon dioxide & destruction of forest. Global warming E5. 难(排除法)难(排除法)studies
13、 volcanoes, the worst eruption there was a much greater eruption. A References3. Population, growing at the disturbing rate overpopulation GReading strategy 5 Decide which sentence goes in the gap. Check that it fits the sentences before and after it. (Are all paragraphs coherent?)(Ex 3 P10): Use th
14、e Strategies to complete the gaps in the text (1-5) with these sentences (a-g). There are two extra sentences you do not need .But evidence shows that 73,000 years ago there was a much greater eruption.b) Even Europe has suffered and large areas have been under water.That is probably not the most im
15、portant factor either .Third , the other bits of land you might have been able to farm are now useless.On top of that add global warming.f) For example , the Yellow River, once famous for flooding, failed to reach the sea at all for 226 days in 1997. g) One answer is overpopulation. Keys : 1.b 2. f
16、3.g 4.e 5.a Step 3: Scanning (Ex 4 P11) Read the text again and answer these questions.1. What is the attitude of the journalist towards the future ? Pessimistic. 2. Who are most likely to be the victims of natural disasters? Poor people.3. Why are there now more hurricanes, floods and droughts ? Ov
17、erpopulation and industrialization.4. Why are volcanoes and earthquakes more dangerous now ? A big population in cities (or urbanization)5. What could be the biggest threat to the planet in the future? A volcanic eruption. 6. What effects might this threat have? Low temperature (A freezing weather).
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- Unit 22 Lesson Natural Disasters
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