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(共23张PPT)
Unit 4 The Earth
牛津广州版七年级上册
Why should we learn about the Earth
Key question
主题范畴：人与自然
Reading I
Unit objectives
I can:
share some amazinig facts about the Earth.
understand why the sea is important, and how
pollution is harming sea animals.
describe the problems our planet is facing.
explain ways to protect the Earth.
说明保护地球的方法。
分享一些关于地球的神奇事实。
理解为什么海洋很重要，以及污染是如何 伤害海洋动物的。
描述我们的星球正面临的问题。
First thoughts
The earth is one of the planets in the solar system. This amazing planet is around 4.5 billion years old.
Today let’s explore this amazing planet — the earth
/ s st m/
/ b lj n/
/ pl n t/
/ me z /
adj. 令人大为惊奇的
n. 行星
v. 探索
/ k spl (r)/
n. 系统
num. 十亿
Fact File
事实档案
land
sea
clouds
About 70% of the Earth is covered by the sea.
What makes up the largest part of the Earth’s surface
被……覆盖
/ k v (r) /
What is the largest animal on the earth
Big blue whales are the largest animals on the earth.
The earth provide home—the sea, for them .
/ we l /
/ pr va d /
South Pole
Equator
North Pole
/ kwe t (r)/
/p l/
n.赤道
Where is the hottest place on the earth
However, it is freezing cold in the South Pole and North Pole areas.
n. 地区；地域
/ e ri /
adj. 极冷的
/fri z /
n. 地极
In the desert. B. In the forest. C. Under the sea.
/ dez t/
Where can you see most plants on the earth
n. 沙漠；荒漠
What’s the highest mountain on the earth How high is it
Mount Everest is the highest mountain on the earth.
It reaches 8848,86 metres in height.
v. 足够达到
n. 米
/ri t /
/ mi t (r)/
What’s the smallest plant on the earth like
The smallest plant is as small as a grain of rice.
n. 谷粒
/gre n/
clouds
the Earth
the solar system
land
the sea
the Sun
Before you read
1 Look at the pictures and fill in the blanks with the words and the phrase below.
the solar system
the Sun
the Earth
clouds
land
the sea
The Earth
the Sun
the sea
land
clouds
the solar system
被……覆盖
据我们所知
事实档案
Watch and take notes
What positive adjectives are used to describe the earth in the video
incredible
beautiful
breathtaking
unique
Lead-in
1.What does each picture show us
forests
plants and animals in the sea
happy children
2
1
3
4
5
Pre-reading
2.Number the paragraphs, underline the topic sentences of each paragraph and circle the key words.
Places
on Earth
Plants
on Earth
Home
to people
Animals
on Earth
_________
_________
_________
_________
2
1
3
4
5
Introduction
Read for main idea
The topic sentence of a paragraph introduces the main idea. It is usually at the beginning or the end of the paragraph.
Reading strategy
The Earth is an amazing planet!
Let’s explore, learn about and take care of our home.
Read for structure
1
5
Places on Earth
Plants on
Earth
Home to people
Animals on
Earth
Amazing
facts
2
3
4
What is the structure of the article
/ /
/
/
/
Find sentence in the article on page 53 to go with this photos
2
1
3
4
5
（1）
（2）
（3）
（4）
1
2
3
4
Read for details
Read again and find evidence to support the statements:
2
1
3
4
5
(1) There are both hot and cold places on Earth.
(2) The Earth is full of life.
(3) The Earth is very important to us.
Read for details
How does the writer develop this article
1. Give examples
2. List numbers
3. Do comparison
Clear 清晰性
Logical 逻辑性
Scientific 科学性
Features of exposition
1
2
2
3
2
amazing
freezing cold
deserts
reach
a
grain of
wide open sky
whales
provides with
explore
take care of
What does the earth provide for people
The Earth is _________________.
an amazing planet
animals
people
forests
fields
rivers
mountains
Post-reading
plants
air
water
food
The tallest
The smallest
Tigers and lions
There are……
Birds
Big blue whales
Some ____
Some ____
hot
cold
Places
Some….live on__
Other….enjoy___
…call___ home
___can reach over 100 metres
___ is as small as____
____ is over 8,800 metres.
____ is more than 10,000
metres down.
Let's protect the Earth together and let it be a beautiful place forever!
1. 课本课后习题.
2. 选一个季节或节气，完成书签（绘画+季节/节气英文名称）.
3. 背U4单词短语，准备听写；背课文，周五截至.
Homework

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