资源简介

(共28张PPT)
Air
10
Module 4
The natural world
Period 1 (P68-P69)
Look and think
What’s this And what happened
It’s a balloon.
What’s in the balloon
air
Free talk
Air is everywhere around us.
Air is ...
Air has ...
We need air to ...
We can ... with air.
What do you know about air
Know about air
The meaning of air.
air
It consists mainly of nitrogen(氮气) and oxygen(氧气).
Covering the Earth’s surface.
“the gas of life”
It’s very important for people.
Free talk
Can you describe the air
colour
feel
shape
taste
smell
...
Listen and fill in the blanks
It has __________ or ______.
It has ___________________.
We cannot ____ it, but we can ____ it.
It is _________.
no colour
shape
no smell or taste
see
feel
everywhere
Listen and say
It has no colour or shape.
It has no smell or taste.
We cannot see it, but we can feel it.
It is everywhere.
every(每个)
where(哪里)
adv. 到处
Think, listen and answer
Is the air important to all people
What is the air also important to
Why is it important
Yes, it is.
It is also important to animals and plants.
Because we all need it to keep us alive.
Listen and say
It is important to all people.
It is also important to animals
and plants.
We all need it to keep us alive.
adj. 活着的
keep ... alive: 让……活着
balloon
Think and tick
What other things need air
Think and tick.
plane
bird
kite
How do kites and planes stay in the sky
They ride on air.
Listen and say
Look at the kite and the balloon.
Look at the plane and the bird.
They all need it too.
It keeps them high in the sky.
What is it
us, classroom ...
Language points
It keeps them high in the sky.
此句型用于表达“它使某人/某物保持……”。句子时态为一般现在时，主语是第三人称单数，谓语动词要用第三人称单数形式。
keep在句中意为“保持”，后可接人称代词宾格。
句型结构：
It keeps + 某人/某物 + 形容词（+其他）.
healthy, clean ...
Watch and follow
Listen and say
It has no colour or shape.
It has no smell or taste.
We cannot see it, but we can feel it.
It is everywhere.
Listen and say
It is important to all people.
It is also important to animals
and plants.
We all need it to keep us alive.
Listen and say
Look at the kite and the balloon.
Look at the plane and the bird.
They all need it too.
It keeps them high in the sky.
What is it
Groups read
Choose your partners.
Practise reading.
Read aloud with feeling.
Ask and answer the questions.
What is it, Jill
...
Does it have any colour or taste
...
Can you see or feel it
...
Why is it important
...
Look and answer
How is the air in the picture
It’s dirty.
It’s clean.
/ d t /
/kli n/
The air is very dirty. We call this air pollution.
Extension
Air pollution is harmful!
1 It’s harmful to the health of people.
2 It’s harmful to the nature.
3 Air pollution spreads easily.
4 Air pollution is a global problem.
Where does air pollution come from
It comes from the smoke.
/sm k/
Where is the smoke from
It comes from cars, buses and factories.
factory
/ f kt r /
Think and talk
How to keep the air clean in our life
Exercise
一、单项选择。
( )1. ______ have no colour or shape.
A. Air and water B. Air and smoke
C. Water and clouds
( )2. It is important ____ us ____ learn English.
A. to;for B. for;with C. for;to
( )3. The wind keeps the kite _____ in the sky.
A. high B. tall C. fly
A
C
A
二、根据实际情况回答问题。
1. Is the air around you clean
____________________________________
2. Are there any factories near your home
____________________________________
3. What should we do to keep the air clean
____________________________________
Summary
Words:
Sentences:
1. We all need it to keep us alive.
2. It keeps them high in the sky.
factory
smoke
dirty
clean
Homework
抄写Look and learn单词，每个四遍；
听录音，熟读Listen and say；
查资料了解空气及空气对生物的重要性。

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