Unit 7 Protect the Earth 课件（55张PPT）

(共55张PPT)
Unit 7 Protect the Earth
1.掌握的单词及其短语：protect/Earth/save/useful/use/waste/much/reuse/energy/come from/coal/oil/wood/cut down/too many/plastic/paper/glass/project/poster/gate。
2.重点句型：We use water to……, We should/shouldn’t……. Most of our energy comes from coal and oil. Too much plastic is bad for the Earth.
3. 正确理解对话内容。
4. 情态动词的规则及用法。
5. 能运用所学句型及单词讨论保护环境的话题。
学习目标
What can we do to keep our city clean
导入新课
We can……
What can we do to keep our city clean
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We can……
What can we do to keep our city clean
导入新课
We can……
What can we do to keep our city clean
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We can……
课文展示
课文展示
课文展示
课文展示
单词讲解
煤 地球 石油
There isn’t much oil or coal on _______.
单词讲解
Earth
地球
Earth
on Earth
在地球上
单词讲解
protect 保护
现在分词为 protecting
过去分词为protected
常用短语：
protect the earth 保护地球
单词讲解
We should _________ the Earth on 22nd April.
单词讲解
Earth Day
地球日
protect
There is less and less _____ in the world.
单词讲解
coal
coal 煤炭
_____ is very important for our life.
单词讲解
Oil
oil 油
如：Olive Oil 橄榄油
作为能源，oil可特指石油
Most of our energy comes from _______ and ________.
coal
单词讲解
oil
Most of our ________ comes from coal and oil.
单词讲解
energy
energy 能源
常用短语：
solar/wind energy 风能/太阳能
new energy 新能源
save the water 节约用水
We should ________ water.
We should not ________ water.
单词讲解
waste water
浪费水
save
waste
save the water 节约用水
单词讲解
reuse the water
再利用水
单词讲解
save 节约；存、攒、省
常用短语：
save money 存钱、省钱
save time 节约时间
save energy 节约能源
It’s time for us to save __________.
我们应该开始节约能源了.
energy
单词讲解
waste 浪费；废弃物
We __________ ________ energy.
我们不应该浪费资源。
shouldn’t waste
单词讲解
纸 塑料 木头
We use _______ to make bags and bottles.
Too much plastic is bad for the Earth.
单词讲解
plastic
塑料
plastic
In order to protect our environment, we should use more cloth bag than_____________.
单词讲解
plastic bag
单词讲解
glass 玻璃
glass 眼镜
常用短语：glass bottle玻璃瓶
He took off his _________.
glasses
单词讲解
cut down
砍倒
We should not __________ too many trees because trees help keep the air _________.
cut down
clean
We should not ______ _______ too _______ trees
because trees _______ ________ the air clean.
单词讲解
cut down
many
helps keep
单词讲解
This table is made of wood.
这张桌子是木头做的。
单词讲解
We use _______ to make tables, chairs and many other things.
wood
单词讲解
drive 开车，驾驶
第三人称单数：drives
现在分词：driving
过去式：drove
常用短语：drive a car开车
He can _______ very well.
drive
重点句型
We use water to clean things.
我们用水洗东西。
use sth. to do sth.用某物做…
reuse(再利用) sth. to do sth. 重复利用某物做某事.
重点句型
I can _________ paper to make a picture.
我能再利用纸来做一幅画。
reuse
重点句型
Too much plastic is bad for the Earth.
重点句型
be bad for
对……有害，对……不好
反义词：be good for 对……有益
Watching too much TV ____ ____ ____your eyes.
be bad for
重点句型
tell sb about sth.
告诉某人关于某事
重点句型
Did you tell ______(he) ________ the party
him
about
语法讲解：many & much
many
形容词，修饰可数名词
比较级：more
最高级：most
常用短语： too many 太多、how many 多少个
There are too _______ cars on the road.
much
much
形容词，修饰不可数名词
比较级：more
最高级：most
常用短语： too much 太多、how much 多少钱
much
There is not _______ oil or coal on Earth.
语法讲解：many & much
语法讲解：another & else
another
another 指“三者或以上中的另外一个”
固定结构：“另外/再多少个…”
another+基数词+名词复数=基数词+more+ 名词复数
例：
another six apples=six more apples
再来六个苹果
语法讲解：another & else
else
else是个副词， 表示“另外”、“其它”的意思。
例：
Would you like something else to drink
你还要喝点别的什么吗？
语法讲解
语法讲解
语法讲解
情态动词
情态动词不能单独使用，必须与后面的动词原形搭配使用
情态动词无人称和数的变化
常见的情态动词：can(could), may, must, have to, shall(should), will(would).
语法讲解
情态动词结构
肯定结构：主语+情态动词+动词原形+其他
You should read books now.
否定结构：情态动词后加not
We shouldn’t (should not) waste energy.
一般疑问句：情态动词提前？
—Shall we go to the library now —Good idea!
特殊疑问句：特殊疑问词+情态动词+主语+动词原形+其他？
What can we do to protect the Earth
语法讲解
We __________ ________ energy.
我们不应该浪费资源。
shouldn’t waste
语法讲解
_______ we go to the library now
我们现在去图书馆 好么？
Shall
练一练
smoke
litter
练一练
cut down too many trees
litter
练一练
talk
use too many plastic bags
畅所欲言
How can we protect the earth
save water
save energy
plant more tree
Don’t use too much plastic.
根据句意或首字母填空
It’s a kind of liquid(液体) energy. It’s black. It’s _______.
People use plastic or glass to make them. We put milk, water, juice or other food in them. They are ________.
We can write or draw something on a piece of p_________.
The student are doing a p_______ about environment.
课堂练习
oil
bottles
aper
oster
1.本课学习了重点单词：protect/Earth/save/useful/use/waste/much/reuse/energy/come from/coal/oil/wood/cut down/too many/plastic/paper/glass/project/poster/gate
2.重点句型：
We use water to……, We should/shouldn’t……. Most of our energy comes from coal and oil. Too much plastic is bad for the Earth.
3. 情态动词的规则及用法。
4. 能运用所学句型及单词讨论保护环境的话题。
课堂小结
1.Recite new words and useful expressions.
2.Write 5 sentences with：
We use water to……, We should/shouldn’t……. Most of our energy comes from coal and oil. Too much plastic is bad for the Earth.
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