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U22--L3公开课 natural disaster


Unit22 Lesson 3

Natural Disasters
永春一中 郭平凡

Warm up

What do you know about natural disasters?

Let’s do a quiz.

1.What is the world

's most expensive type of natural disaster? A.Earthquakes B. Floods

2. A hurricane is a storm with wind speed of mph or more? A. 90 B. 74

3. Which country has the largest number of active volcanoes?
A. Japan B. Indonesia

4. Most tsunamis(海啸) are caused by . A. Earthquakes B. Hurricanes

5. Where do most earthquakes occur?
A. at mountainous areas B. at plate(板块) boundaries

6. What do you do in an earthquake?

A. Run to a brick building B. Get to an open area

Look at the following pictures. Tell what kind of disasters they are?

droughts

floods

forest fires

typhoons

hurricanes

tsunamis

landslides

volcanic eruptions

earthquakes

Different types of disasters:
droughts, earthquakes, floods, forest fires, hurricanes, landslides, tsunamis, typhoons, volcanic eruptions

While-reading

Task1. Read the text and complete the gaps in the text, using the reading strategies.

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.

(5) (1)

(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
(4) (2) (e) On top of that add global warming. (f) For example, the Yellow River, once

have been able to farm are now useless.

famous for flooding, failed to reach the sea at all for 226 days in 1997.

(3)

(g) One answer is overpopulation.

Task2. Read again and tell which of the following statements are true(T) and which are false(F).

①The journalist’s attitude towards the future is optimistic. ② The population growth is mostly in the developed world.

③ Overpopulation adds to global warming and thus causes more hurricanes. ④ There are more than 300 active volcanoes which erupt each year.
⑤ Dust from the eruption of Mt Tambora in 1815 cooled down the following summer in Europe and America.

①The journalist’s attitude towards the future is optimistic. (F) ②The population growth is mostly in the developed world. (F) ③ Overpopulation adds to

global warming and thus causes more hurricanes. (T)

④ There are more than 300 active volcanoes which erupt each year. (F) ⑤ Dust from the eruption of Mt Tambora in 1815 cooled down the following summer in Europe and America. (T)

Task3. Fill in the following table with information from the text

Areas Asia, Africa, America and Oceania the US, Central America large areas of Africa, the west of the US many parts of Asia, Europe and South America Indonesia and some other parts of Asia

Disasters floods storms & hurricanes droughts earthquakes tsunamis

Task4. Work in pairs. Underline the words or phrases that have the following Chinese meanings in the text.

①大规模地(headline) on a grand scale ②有矛盾;有冲突(A) in conflict ③导致 (A) result in ④彻底毁灭(B) wipe out ⑤克服;恢复(B) get over ⑥突然袭击(C) turn on sb ⑦以…速度(C) at the rate of ⑧在…范围内(D)in/ within the range of ⑨处于危险之中(D) at risk ⑩在某种程度上(D) to some degree

Post-reading

Summary and consolidation

Task 5.Complete the summary of the text with the phrases in task 4.

on a grand scale ①大规模地 ②有矛盾;有冲突 in conflict ③导致 result in ④彻底毁灭 wipe out get over ⑤克服;恢复 ⑥突然袭击 turn on sb ⑦以…速度 at the rate of ⑧在…范围内 in/ within the range of ⑨处于危险之中 at risk ⑩在某种程度上 to some degree

In the last decade, environmental disasters have broken out on a grand scale ______________. For example, resulted in reduced rainfall has__________ droughts in many areas. Some nations have even in conflict been__________over water.

Volcanoes and earthquakes are even more dangerous. A volcanic eruption in 1997 nearly_________ wiped out a small island. More than 500 million people now live within the range of _________________a volcanic eruption, while an even greater at risk number of people live ________ from earthquakes.

Why is nature beginning to ______ turn on us? One answer is overpopulation. The world’s population is growing ____________ 10000 people an at the rate of To some degree hour. _______________, this has lead to some of the most severe environmental problems.

If this situation continued, it seems impossible for us to get over completely _______ the environmental disasters.

Speaking

Self-rescue in disasters Work in groups and discuss what we can do to save ourselves when: ① a fire breaks out ② an earthquake occurs

Homework
1. Review the text and do exercises on page 56, 57. 2.Work in group and design a poster to introduce self-rescue means in disasters.

Thank you!


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