资源简介

(共29张PPT)
Amazing nature
Reading for writing
1.To master the key words and expressions.
2.understand the main idea of the passage.
3.To realize the effect of humans activities
and the responsibility of protecting the environment.
Learning objectives
Lead in
What’ s the video mainly about
Guess the puzzles.
Lead in
“I am salty.People float on me.”
The Dead Sea
"What rare place combines ice and jungle "
Rainforest
Lead in
Guess the puzzles.
“I'm slow but powerful, carving valleys with my icy teeth.” “What am I ”
Glacier
Lead in
Guess the puzzles.
Prediction
Look at the title, subtitles and pictures and guess
what the passage talks about.
The Dead Sea could die!
Rainforest - forest ≠ rain
If Frozen turns into Waterworld ...
While-reading
Problem-Cause-Solution
I'm not a sea but a lake. And I'm not dead. In fact, I've got many plants and animals. I'm saltier than any sea, so people can lie on my surface. Rivers flow into me. But now people take too much water from them. My water level is going down. I am becoming smaller year by year. Take less water, or I'll dry up within the next 100 years. Then I really will be dead!
The Dead Sea could die!
Problems
Causes
Solutions
Its water level is going down and it’s becoming smaller year by year. It may dry up within the next 100 years.
People take too much water from the rivers that flow into it.
Take less water
While-reading
Problem-Cause-Solution
I'm not a sea but a lake. And I'm not dead. In fact, I've got many plants and animals. I'm saltier than any sea, so people can lie on my surface. Rivers flow into me. But now people take too much water from them. My water level is going down. I am becoming smaller year by year. Take less water, or I'll dry up within the next 100 years. Then I really will be dead!
The Dead Sea could die!
1.The Dead Sea is actually a ____.
A. sea B. lake C. river
2. People can lie on its surface because it's very ____.
A. salty B. cold C. deep
3.The main problem is ____.
A. too many animals
B. water being taken
C. no rain
While-reading
Problem-Cause-Solution
I'm the rainforest of Madagascar.As my name suggests, I make rain for my plants and animals, such as monkeys, snakes and many kinds of flowers. For 80% of them, I'm their only home in the world. However, people are cutting down my trees for wood and to make space for farming. Please stop it. I'm disappearing.
Problems
Causes
Solutions
Rainforest - forest ≠ rain
It is disappearing.
Stop cutting down trees.
People are cutting down its trees for wood and to make space for farming.
While-reading
Problem-Cause-Solution
Fill in the blanks
rain, home, farming, monkeys, Madagascar, wood, snakes, flowers, cut, 80%
I'm the rainforest of _________. I make ________ for animals like _______ and ________.
People are _______ down trees for _______ and _______. ________% of animals lose their ________.
Rainforest - forest ≠ rain
Madagascar
rain
snakes
monkeys
cutting
wood
farming
80
home
While-reading
Problem-Cause-Solution
I'm a glacier at the Glacier National Park in America. It's a land full of ice and snow. Do you want to explore the white world in the film Frozen Then my home is the best choice. Two hundred years ago, there were about 150 glaciers. But now, there are around 25. Please stop climate change. I'm turning into Waterworld!
Problems
Causes
Solutions
If Frozen turns into Waterworld ...
The number of glaciers has decreased sharply and they are melting (融化).
Stop climate change.
Climate change.
While-reading
Problem-Cause-Solution
I'm a glacier at the Glacier National Park in America. It's a land full of ice and snow. Do you want to explore the white world in the film Frozen Then my home is the best choice. Two hundred years ago, there were about 150 glaciers. But now, there are around 25. Please stop climate change. I'm turning into Waterworld!
If Frozen turns into Waterworld ...
1.How many glaciers were there 200 years ago
There were about 150 glaciers.
2.Why are glaciers disappearing
Because they are turning into Waterworld!
While-reading
Complete the table with the words and expressions
from the passage.
lake
rainforest
ice and snow
take
to make
Two hundred
Post-reading
Think and share
1 What is the world like in Frozen and Waterworld Why does the writer mention the two films
In Frozen, the world is cold and full of ice and snow. In Waterworld, the world is covered in water, with no land. The writer mentions the two flms to show the serious problem of climate change.
2 Why is it important to stop these natural wonders from disappearing
It’s important because natural wonders are beautiful. They give us hope and seeing them makes us happy. Also, they are home to many plants and animals. The life cannot live without lakes, rainforests and glaciers.
Post-reading
Writing: Think of some natural wonders with
problems. Choose one to write about.
Victoria Falls
the Amazon River
the Great Barrier Reef
Post-reading
Writing: Think of some natural wonders with
problems. Choose one to write about.
I, the Amazon River, am in trouble. I am a big river, full of life. In fact, I’m one of the largest rivers in the world. I run through the Amazon Rainforest. I give water to it. But now, I am facing problems like pollution and climate change. I’m getting dirtier and the amazing life around me is dying out. It will change the balance in nature and harm all the life, including you, humans. Hear my cries, and help me now! You should stop throwing rubbish in the water and help take care of the forest.
1.呼救 cry for help 8.接下来的100年内 within the next 100 years
2.躺在…上面 lie on… 9.降雨 make rain
3.流入 flow into 10.砍伐 cut down
4.太多 too much 11.为……让出空间 make space for…
5.下降 go down 12.气候变化 climate change
6.一年一年地 year by year 13.阻止……做某事 stop…from doing sth.
7.干涸 dry up
Key phrases
（1）昨晚你听见有人呼救吗？
Did you hear someone 　　　　　　　　　　last night？
（2）他站起来并且呼喊求助。
He stood up and 　　　　　　　　　　　　.
cry for help
cried for help
1.Natural wonders crying aloud for help “大声呼救”的自然奇观（教材P76）
◆cry for help 呼救
2.I’m saltier than any sea， so people can lie on my surface.我比其他海咸，因此人们可以躺在我的表面。（教材P76）
lie相关短语：
lie on躺在……上面 　lie down躺下 　lie in位于

记忆口诀：规则的“撒谎”，不规则的“躺”。
（1）I 　　　　　　（lie） on the beach and listened to music.
（2）Bob， you 　　　　　　（lie） to me yesterday.Can you tell me why did you do that？
（3）The magazine is 　　　　　　（lie） on the table.
lay
lied
lying
3.I am becoming smaller year by year.我一年一年地在变小。（教材P76）
◆year by year 一年一年地
day by day一天一天地
week by week一周一周地
●year by year强调每年都有变化，渐变性；
●year after year只强调动作的重复，重复性。
（1）我的孩子一年一年地在长高。
My child is growing taller and taller 　　　　　　　　　.
（2）那个老人一天一天地好转起来。
The old man is getting better 　　　　　　　　　　　　.
（3）我的父母年年都在变老，所以我每年都要去探望他们。
My parents become older and older 　　　　　　　　， so I go to visit them 　　　　　　　　.
year by year
day by day
year by year
year after year
4.Take less water， or I’ll dry up within the next 100 years.少抽些水吧，不然用不了一百年我就干涸了。（教材P76）
◆dry up 干涸
（1）这泉水早就干涸了。
The spring 　　　　　　　　　　　　long ago.
dried up
◆or在本句中意为“否则”，
常用于“祈使句，or+陈述句”结构中，前后两句意思是对立的。
如：Get up earlier， or you will be late for school.早点儿起床，否则你上学会迟到。
and用于“祈使句，and+陈述句”时，意为“那么”，前后两句意思是统一的。如：
Get up earlier， and you will get to school on time.早点儿起床，那么你会准时到学校。
（　　）（2）Hurry up， 　　　　we will be late for school.
A.or　 B.and　　　 C.but　
用or或 and填空。
（3）Study harder， 　　　　　　you will get better grades.
（4）Study harder， 　　　　　　you won’t get better grades.
A
and
or
5.However， people are cutting down my trees for wood and to make space for farming. 然而，人们正在砍伐树木获取木材，并为农耕让出空间。（教材P77）
◆cut down砍倒；削减
◆make space for…=make room for… 为……让出/腾出空间
（1）人们砍伐森林，所以动物没有东西吃。
People 　　　　　　　　the forests， so animals had nothing to eat.
（2）你能为老奶奶让出空间吗？
Can you 　　　　　　　　　　　　the grandma？
（3）请移动书架，把空间让出来给书桌。
Please move the bookshelf in order to 　　　　　　　　　the desk.
cut down
make space/room for
make space/room for
Homework
1. Recite the passage.
2. Finish the writing.

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