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(共24张PPT)
Unit 3 Wonderful nature
（Start up）
Look and say
mountain
desert
lake
Look and say
grassland
river
beach
Look and say
sea
hill
forest
Watch and read
Review
Where do they travel with VR glasses
China has so many natural wonders.
Watch and answer
There are so many wonders on earth.
We need to take care of them.
What wonders of nature do the pictures show
Read and circle
Which mountain is it
It's Mount Qomolangma.
How high is it
It was 8,848.86 metres high in 2020.
It's the world's highest mountain.
Will it be higher
It's getting higher every year.
It will be higher in the future（在未来）.
high
---higher
---highest
（更高）
（最高）
Listen and imitate
Look and guess
What is the world's biggest desert
Sahara Desert
the Antarctic Desert
Read and underline
How big is it
the Antarctic Desert
It's over 14 million square kilometres.
(＞1400万平方公里)
Listen and imitate
Read and answer
What is the longest river in the world
The longest river in the world is the Nile.
Read and answer
How long is the Nile
It's about 6,671 kilometres long.
(≈6，671千米)
How many countries does it run across
It runs across 11 countries.
Why is the Nile very important
Think
What's the world's highest mountain
What is the longest river in the world
What's the world's biggest desert
Mount Qomolangma is the world's highest mountain.
The Antarctic Desert is the world's biggest desert.
The longest river in the world is the Nile.
Our wonderful natural world
Read
Watch and read
Read together
Read in roles
Tips:
1. 注意单词的发音，做到发音准确；
2. 注意句子的升降调并认真模仿
Read again and circle
1. Mount Qomolangma is/isn't getting higher.
2. The Sahara/The Antarctic Desert is the world's biggest desert.
3. The Nile runs across eight/eleven countries.
Look and say
high
higher
highest
big
bigger
biggest
long
longer
longest
更...
最...
比较级
最高级
Learn
用来对比两个事物,表示“更...”
形容词比较级：
形容词最高级：
用于三者或三者以上的比较，表示“最……”
最高级的规则变化：
1.一般情况下：直接在词尾加-est
2.重读闭音节，双写末尾字母，再加-est
3.以不发音的e结尾：加-st
4.双音节或多音节词：在前面加most
longest
highest
biggest
largest
most beautiful
Read and write
（青藏高原）
longest
deepest
（最深点）
（世界屋脊）
highest
biggest
one of the+最高级+名词复数：最...之一
Ask and answer
Discuss and talk
There are so many wonders on earth. We need to take care of them.
How to take care of them
Cut plastic waste
减少塑料垃圾
Take all the trash away 带走所有垃圾
No carving or picking plants 禁止刻字、采摘植物
Choose low-carbon transport 选择低碳交通工具
Thank you!

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