课件45张PPT。Unit 22 Environmental ProtectionLesson 3
natural disasters
1.grand adj. big and very impressive
2.scale n. the size or level of sth
3.separation n. the condition of being separated
4.rough adj. unpleasant or difficult
5.mountainous adj. having many mountains
Word Review巨大的规模,大小分离,分开艰难的多山的
6.slip v. fall off
7.slide v. to move smoothly over a surface
8.landslide n. sudden fall of a lot of earth or rocks
down a hill, cliff
9.shabby adj. old and in bad condition
10.construct v. build Word Review滑落滑行滑坡,山崩破烂的建造Warm UpDefinition
Natural disaster is the consequence of a natural hazard, such as floods, droughts, mud-rock flows, seismic sea waves, earthquakes, windstorms and the stretching of new deserts which affects human activities .
自然灾害是影响人类活动自然风险,例如洪水,干旱、泥石流、海啸、地震,风暴和沙尘暴。What do you know about natural disasters?Warm UpWhat do you know about natural disasters?Let’s do a quiz.1. Which country has the largest number of active volcanoes?
A. Japan B. Indonesia2. Where do most earthquakes occur?
at mountainous areas
B. at plate(板块) boundaries3. What do you do in an earthquake?
A. Run to a brick building
B. Get to an open area4. Most tsunamis(海啸) are caused by .A. Earthquakes B. Hurricanes
Many years ago, 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, bricks 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.Look back to 2008 Brainstorm
Besides earthquake , there are many
natural disasters, can you name some?typhoon tsunami
thunderstorm
Natural
disasaters droughtslandslidevolcanic
eruption forest fireflood1. What disasters have been threatening the lives on the earth?droughtearthquake2008 Wenchuan earthquake?floodforest firehurricanelandslidetsunamityphoonvolcanic eruption
Task 1 Gap-filling
Use the strategies to complete the
gaps in the text(1-5) with these sentence(a-
g). There are two extra sentences you do
not need.
Reading strategies:completing texts with sentence gaps
(a) read the text to get the general idea.
(b) read a paragraph with a sentence gap
and identify the topic.
(c) read the sentences before and after the
gap and look for clues about the
missing setence.
(d) certain words may help you: time
references, pronoun references,
linking words.
(e) decide which sentence goes in the
gap. check that it fits the sentences
before and after it.(a) But evidence shows that 73,000 years
ago there was a much greater eruption.
(b) Even Europe has suffered and large areas
have been underwater.
(c) That is probably not the most important
factor either.
(d) Third, the other bits of land you might
have been able to farm are now useless.
(e) 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.Reference Words
Flooding underwater
Asia, Africa, America, and Oceania
even EuropeGap 1bReference Words
Leaving irrigation canals dry
The Yellow River, failed to reach the sea
Gap 2fsupplying dry land with water through pipes or channels etcReference Words
Overpopulation Population,
growing at the disturbing rate
Gap 3gReference Words
Global warming This has been caused by carbon dioxide & destruction of forest.
Gap 4eReference Words
the worst eruption there was a much greater eruption.
Gap 5aRead Para A-B (5 minutes)
1. How do these two paragraphs develop?
By comparison
By giving examples
By classification
By giving statement
2. What natural disasters are mentioned in the examples given by the author?
3. Translate the last sentence of Para B.
1. How do these two paragraphs develop?
By comparison
By giving examples
By classification
By giving statement
2. What natural disasters are mentioned in the examples given by the author?
There has been terrible flooding…even Europe has suffered…
Storms have been getting worse…with…hurricanes hitting the US… Reduced rainfall has affected large areas…has resulted in huge forest fires.
Volcanic eruption and earthquake have always been a threat…A volcanic eruption nearly wiped out the small island.
It is still recovering from the Asian tsunami caused…
3. Translate the last sentence of Para B.
This catastrophe is still very fresh in the minds of people worldwide who have not yet got over their separation from loved ones lost in the tsunami.
在世界各地许多人的心目中, 那场灾难仍然记忆犹新。他们还没有从海啸中丧失亲人的打击中恢复过来。
Catastrophe: a sudden disaster that causes many people to suffer Read Para C:
Why are there now more hurricanes,
floods, and droughts?
Overpopulation and global warming caused by industrialization and deforestation.
Read Para D and E:
Why are volcanoes and earthquakes more dangerous now? (para D)
What is the attitude of the journalist towards the future? (para E)
What could be the biggest threat to the planet in the future? (para E)
What effects might this threat have? (para E)
Why are volcanoes and earthquakes more dangerous now? (para D)
“As around half the world’s population now lives in the cities.”
2. What is the attitude of the journalist towards the future? (para E)
Pessimistic. “things could get a lot
worse”, “And there are about two of
these events every 100000 years…”
Urbanization4. What could be the biggest threat to the planet in the future? (para E)
5. What effects might this threat have? (para E)
A volcanic eruption. Low temperature (A freezing weather).earthquakestsunamisdroughtsfloodsAsia, Africa, America and Oceania the US, Central Americalarge areas of Africa,
the west of the USmany parts of Asia, Europe and South AmericaIndonesia and some other parts of AsiaFill in the following table with information from the text storms & hurricanes
Fill in the blanks about the text.In the last ___ years , there are more and more disasters such as _____ , ________, thunderstorms, earthquakes, ________, volcanic _________and _____ fires all over the world. Why are so many disasters ? One of the reasons is over- __________. ten floodstsunamistyphoons eruptions forest population__ addition, ______ change and global ________ caused by factories, vehicles and deforestation can lead ___ the disasters or make them worse. At present, volcanoes and earthquakes are more _________ with the fast ______ of people . Inclimate warmingtodangerous growthEarthquakes take the lives of 1.6 million people in the last hundred years. What is worse, the disaster experts predict that the things will get _____.worse Finish off exercise 5,6 on page 11.
Go to lexicon, page 106 and try learn more phrasal verbs.
Part VHomework Thank you!