Unit 7 Protect the Earth 课件

(共28张PPT)
Unit 7 Protect the earth
(Story Time)
Plastic pollution
Animal
N
water
W
energy
E
trees
T
land(土地)
L
air(空气)
A
Plastic pollution
p
plastic bags & plastic bottles
animal
water
energy
trees
land(土地)
air(空气)
plastic pollution
animal
water
energy
trees
land(土地)
air(空气)
plastic pollution
What problems are mentioned in the story
Save(节约 )water
Save energy
Save trees
Don't use too much plastic.
______ comes from trees.
听录音，说出四段文本标题各是什么？
能源
Energy comes from ____ and _____.
Wood
coal
oil
coal
煤
oil
油
Water
Read and judge
Water is useful，so we should not waste it. ( )
We use water to clean the things every day. ( )
There is much water in many places. ( )
We should not reuse the water. ( )
F
F
T
T
有用的
浪费
使用
意同many。many 用于可数名词，much 用于不可数名词
地方
再利用
How do we save water
Water is useful(有用的). We drink water and use water to clean things everyday.
In many places, there is not much water.
We should not waste water. We should reuse(重复使用) and save it.
Why should we save water
用直线画出原因(Why do we save water )
虚线画出方法(How do we save water )
Save water
Water is useful.
We drink water and use water to clean things everyday.
In many places, there is not much water.
We should not waste water.
We should reuse and save it.
Reading time
Energy
Read and choose
Most of the energy comes from______.
A. water and soil. B. coal and oil.
2. We should ____________ and we should not_______________.
save energy; drive so much
drive so much; save energy
( B )
( A )
How do we save energy
Why should we save energy
用直线画出原因(Why do we save energy )
虚线画出方法(How do we save energy )
Most of our energy comes from coal and oil.
There is not much coal and oil on earth.
We should save energy. We should not drive so much because cars use a lot of energy.
Save energy
Reading time
Most of our energy comes from coal and oil.
There is not much coal and oil on earth.
We should save energy.
We should not drive so much because cars use a lot of energy.
How do we save trees
Why should we save trees
用直线画出原因(Why do we save trees )
虚线画出方法(How do we save tree )
Wood comes from trees. We use wood to make tables, chairs and many other things.
We should not cut down too many trees because trees help keep the air clean.
Wood comes from trees.
We use wood to make tables, chairs
and many other things
We should not cut down too many trees.
砍下
We should not cut down too many trees.
Because trees help keep the air clean(净化空气)
Trees
Fill in the blanks
________comes from trees. We use ________ to make tables, chairs and many other things. We _____________cut down ______________trees because trees help ____________________.
Wood
wood
should not
so many
keep the air clean
1. What do you know about plastic
2.Listening and answer
What can we use plastics to make
Should we use too much plastics
What can we use plastics to make
Should we use too much plastics
But too much plastic is bad for the earth.
We should not use too many plastic bags or bottles.
We use plastic to make bags and bottles.
We should use paper bags and glass bottles.
So what can we use
We use plastic to make bags and bottles. But too much plastic is bad for the earth.
We should not use too many plastic bags or bottles.
We should use paper bags and glass bottles.
Reading time 插入本段录音
Plastic
Try to say with the given(所给的) words
use… to……
too much….is bad for…..
should not … too many….
should use….
可以自己朗读课文，也可以和小组同学一起朗读。
Save water
Water is useful.We drink water and use water to clean things everyday.
In many places, there is not much water.We should not waste water. We should reuse and save it.
Save energy
Most of our energy comes from coal and oil. There is not much coal and oil on earth.We should save energy. We should not drive so much because cars use a lot of energy.
Save trees
Wood comes from trees.We use wood to make tables, chairs and many other things.We should not cut down too many trees because trees help keep the air clean.
Don’t use too much plastic
We use plastic to make bags and bottles. But too much plastic is bad for the earth. We should not use too many plastic bags or bootles. We should use paper bags and glass bottles.
“Protect the earth”环保主题演讲
小组合作,每组选择文中的一个小主题.(可以借助板书）
Why should we …
We should/shouldn’t..
切合主题，提出保护口号.
nourish(养育) us
We should protect the Earth.