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外研版英语7年级下册培优精做课件授课教师：Home .班级：7年级（*）班.时间：.Lesson 2 GrammarUnit 5 Amazing natureWatch and Say
Watch the video. What words are repeatedly said
small smaller smallest
big bigger biggest
原级
比较级
最高级
原级用来描述一个/类人或事物，不表示比较；比较级表示两个/类人或事物之间的比较；最高级表示三个/类或以上人或事物之间的比较。
comparatives
superlatives
(a) It is famous for the world’s highest mountain.
(b) But this area is also full of the most amazing colours in nature.
(c) The plateau is quieter than the big cities.
Read the sentences from the reading passage and summarise the grammar rules.
Now find more sentences with these structures in the reading passage.
superlative forms
comparative form
E.g. We have fewer restaurant and shops.
In my heart, it’s better than any other place.
I’m proud to say that I’m from one of the most beautiful
places in the world.
comparative forms
superlative form
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一、从方框中选择适当的词并用其正确形式填空
1. Many visitors travel to Guilin because of its fantastic __________.
2. Our teacher gave us a ________ to hiking last week.
common, landscape, guide, design, local
landscape
guide
3. The room looks beautiful because the ________ used bright colours.
4. Such cold weather is ________ in January in Beijing.
5. We went to the museum and saw some old ________ tools.
designer
common
local
common, landscape, guide, design, local
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The plateau is quieter than the big cities.
In my heart, it’s better than any other place.
从例句中可以看出，在对两者进行比较时，形容词（或副词）要用比较级形式，即“形容词(或副词）比较级+than+比较的对象”。
E.g. Summer is a hotter season than spring.
Tim is a taller boy than my son.
It is famous for the world’s highest mountain.
I’m proud to say that I’m from one of the most beautiful
places in the world.
我们要将三个或三个以上的事物进行比较时，要用形容词（或副词）的最高级形式来表达，即“the+形容词（或副词）的最高级+比较的范围”。
E.g. He is the tallest in our class.
She lives (the) closest to school of all my classmates.
Tip： 形容词最高级前一定要加the，副词最高级前的the可省略。
形容词和副词的比较级的变化规则
形容词和副词的比较级变化有一定规律，分为规则变化和不规则变化两种，并且形容词和副词变化规律大致相同。
形容词比较级规则变化
副词比较级规则变化
有些形容词和副词不规则的比较级形式：
形容词和副词最高级的规则变化
常见形容词和副词最高级不规则变化：
Complete the facts about wonders in China.
The Yellow River: 5,464 km
The Yangtze River: 6,300 km
Mount Taishan: 1,532.7m
Mount Emei: 3,079.3m
Mount Qomolangma:
8,848.86 m
The Yellow River is
than the Yangtze River.
Mount Taishan is high. Mount
Emei is .
Mount Qomolangma is the
.
shorter
higher
highest
Which fact interests you the most
In Zhejiang province, there’s a famous natural wonder with amazing tides（潮水）. Do you know what it is
Qiantang River Tides
Complete the passage with the correct form of the words in brackets.
The Qiantang River is 1._________(short) than the Yangtze or Yellow rivers. But it’s still one of the 2._________ (famous) rivers in China.It’s famous for its tides.
Usually it’s a 3._________(slow) river. But when the tides come, the water runs much 4._________(fast). Many tides are two metres 5._________(high). But the 6._________(high) tides can be ten metres high!
shorter
most famous
slow
faster
high
highest
二、根据汉语意思完成句子
6. 这条河流经村庄, 为农民提供水源。
The river ________ ________ the village, providing water for the farmers.
runs through
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7. 我们的老师昨天在课堂上让我们每个人描述一个自己的朋友。
Yesterday in class, our teacher asked each of us ________ ________ one of our friends.
to describe
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8. 这个年轻的警卫为能报效国家而骄傲。
The young guard ________ ________ ________ serve his country.
was proud to
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9. 当我走进房间时, 一幅美丽的画作映入眼帘。
When I walked into the room, a beautiful painting ________ ________ ________.
met my eyes
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10. 这个决定可能会使一些人感到不快, 但我们不得不做出这样的决定。
This decision _______ ________ _______ ________ some people unhappy, but we will have to make it.
is likely to make
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Work in pairs. Talk about the most beautiful natural place in your opinion. Use the words and expressions from the reading passage and the Useful expressions to help you.
The most beautiful
natural place
What is it like
What is its name
Where is it
Why do you like it
Useful expressions
In my opinion, the most beautiful place in my opinion is ...
It is famous for...
It is like...
Words can’t express my love for...
It is one of ... in the world.
三、阅读理解
How much do you know about Qinghai-Tibet Plateau The weather there changes a lot. You can experience “four seasons” in just one day. What would it be like
“Spring” morning
The Qinghai-Tibet Plateau is at a high altitude (海 拔). In the early morning, it’s cool. There is a breeze (微 风). After the sunrise, it becomes warmer, like spring. It’s a good time to take a walk.
“Summer” noon
At noon, it’s sunny and hot. You may feel like it’s summer. The sunlight is so strong that you may want to wear sunglasses. Sometimes, it rains. However, it doesn’t rain for long. If you are lucky enough, you can see rainbows.
“Autumn” afternoon
In the afternoon, the temperature goes down quickly, especially after sunset. It’s cool, just like in autumn. People have to put on warm clothes.
“Winter” night
But later at night, it gets cold, like in winter. People usually go to bed with a thick quilt (被子). The rainy season is from June to September each year. It often rains at night.
( )11. What is the weather like on the Qinghai-Tibet Plateau in the early morning
A. It is sunny and hot. B. It is rainy and cold.
C. It is cool with a breeze. D. It is snowy and windy.
【点拨】细节理解题。根据“In the early morning, it’s cool. There is a breeze.”可知, 青藏高原早晨凉爽且有微风, 故选C。
C
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( )12. When can you see rainbows on the Qinghai-Tibet Plateau
A. In the early morning after sunrise.
B. At a sunny noon after the rain.
C. In the afternoon when it’s cold.
D. At a hot night after the rain.
【点拨】细节理解题。根据“At noon, it’s sunny and hot...Sometimes, it rains. However, it doesn’t rain for long. If you are lucky enough, you can see rainbows.”可知, 在晴天的中午下雨后可能看到彩虹, 故选B。
B
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( )13. 跨学科数学 Which picture tells the change of temperature in a day on the Qinghai-Tibet Plateau
【点拨】细节理解题。根据文章可知, 青藏高原早晨凉爽, 中午炎热, 下午凉爽, 晚上寒冷。D 选项的温度变化曲线符合。故选D。
D
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( )14. What do you have to know if you want to go to the Qinghai -Tibet Plateau
A. It is best to wear winter clothes all day.
B. The weather there is very hot in the day time.
C. People should prepare for different seasons in one day.
D. It’s hot and dry in August every year.
【点拨】推理判断题。根据“You can experience ‘four seasons’ in just one day.”可知, 在青藏高原一天能体验到四季变化, 所以要为一天中的不同“季节”做准备, 故选C。
C
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四、任务型阅读
Chaka Salt Lake lies in Qinghai Province, China. It is rich in salt with a heavy salt bed close to the lake surface. That makes the lake the main source (主要来源) of salt in China. When the weather is nice, the lake reflects (映出) the blue sky beautifully. That is why people call it the “sky mirror”.
Because of its wonderful views, people see the lake as one of the “must-go” places in China. The beautiful sunrise and sunset views are the most amazing. Every July, a great number of visitors come to Chaka Salt Lake. And the situation usually lasts until the end of August, because they just don ’t want to miss the best time to go there. It is believed that with the summer breeze (微风), breathing in the salty air is especially good f or the lungs.
Traveling to such a beautiful world of salt with snow mountains and green grass around, you will feel like you are in a wonder land. If you have a chance, ________
15. Where is Chaka Salt Lake
__________________________________________
It’s in Qinghai Province./It lies in Qinghai Province.
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16. Why do people call Chaka Salt Lake the “sky mirror”
_____________________________________________
Because it reflects the blue sky beautifully.
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17. What are the most amazing views of Chaka Salt Lake
____________________________________________
The sunrise and sunset views.
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18. When is the best time to visit Chaka Salt Lake
__________________________________________
From July to the end of August.
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19. What would the writer say in the last paragraph
__________________________________________
why not come and enjoy the amazing place
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