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人教版英语8年级下册培优备课精做课件Unit 4（第1课时）Section A 1a-2dUnit 4 The Wonders of Nature授课教师：Home .班级：8年级（---）班.时间：.
1a
Match the places with the pictures.
Nile River Angel Falls Mount Qomolangma
Dead sea Sahara Desert Mariana Trench
A
D
B
E
C
F
F
C
A
E
D
B
Place Description Measurement
Mount Qomolangma the . in the world metres high
Sahara Desert the . in the world about square kilometres in size
1b
Listen to the game plete the descriptions of the places.
highest mountain
biggest desert
1b
Listen to the game plete the descriptions of the places.
Place Description Measurement
Dead Sea the . on earth metres below sea level
Mariana Trench the . in the ocean about metres deep
lowest place
deepest point
1c
Listen again. Complete the measurements in 1b with the numbers below.
416 8,848.86 11,000 9,000,000
Place Description Measurement
Mount Qomolangma the . in the world metres high
highest mountain
8,848.86
Place Description Measurement
Sahara Desert the . in the world about square kilometres in size
Dead Sea the . on earth metres below sea level
Mariana Trench the . in the ocean about metres deep
biggest desert
9,000,000
lowest place
deepest point
416
11,000
416 8,848.86 11,000 9,000,000
海平面
一、根据所给提示完成单词。(6分)
1. We love our motherland from the ________(底部)of the heart.
2. The Great Wall in China is one of the greatest man-made ________(奇观)in the world.
3. When the temperature is b________ zero, water turns into ice.
bottom
wonders
elow
4. The Sahara is one of the largest_________(沙漠)in the world.
5. Through lots of practice, his English __________
(水平)improved a lot.
deserts
level
熟词生义 wonder 写出画线词的词性及汉语意思
He wondered why Sandy left without saying goodbye.
______________
v.想知道
A: What’s the lowest place on earth
B: It’s...
A: How low is it
B: It’s surface is... metres below sea level.
A: Now, what’s...
1d
Talk about the places you have learnt about.
表面
A: What’s the lowest place on earth
B: It’s the Dead Sea.
A: How low is it
B: Its surface is 416 metres below sea level.
A: Now, what’s the highest mountain in the world
B: It’s Mount Qomolangma.
A: How high is it
B: It’s 8,848.86 metres high.
e.g.
1. Fendouzhe reached
______________.
2. The deep sea begins at
______________.
3. The Titanic rests at
____________.
4. A whale can dive to
_________________.
2a
What do you know about the deep sea Complete the sentences with the information from the picture.
潜水
10,909 metres
200 metres
3,800 metres
over 2,000 metres
二、用所给词的适当形式填空。(7分)
6. I find the three girls in the club have different ________ (ability).
7. Among all the students, she got the ____________
(high) grade in the maths exam.
8. We use a ruler for the _______________ (measure) of the desk’s length in maths class.
abilities
highest
measurement
9.［达州期末］India has the ____________ (large) population in the world now.
10. In my ________ morning routine, I ________ jog in the park near my home. But yesterday, something __________ happened. A man got hurt suddenly, and luckily someone took him to hospital in time. (usual)
largest
usual
usually
unusual
2b
A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss.
□Where the deep sea begins
□Why people are researching the deep sea
□Which Chinese submersible dived deeper in the water than
many others
□What deep-sea animals are like
□How everyone should protect the deep sea
潜水艇
2c
Listen again. Complete the sentences with the facts from the conversation.
1. People still don’t know much about the .
2. In , China’s Fendouzhe dived into the deep sea and filmed it.
3. Some animals have unusual abilities. Some are but can “sea”. Some can even create their own .
4. There is rubbish even at metres deep.
2020
ocean floor
blind
light
11,000
2d
Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner.
What is the largest shark in the deep sea
What is the bottom of the deep sea like
Why is it important to research the deep sea
在……的底部
三、方框选词并用其适当形式填空。(4分)
11. The __________ of the lake is as smooth as a mirror on quiet mornings.
12. The bird made a quick __________ from the sky to catch a small worm on the ground.
surface
usual, dive, surface, deep
dive
13. The ____________ of this lake reaches over 80 metres.
14. Betty hopes to give her mother an ____________
gift on her fortieth birthday.
usual, dive, surface, deep
depth
unusual
e.g.
A: What is the largest shark in the deep sea
B: I think it’s the whale shark.
A: Do you know how large it is
B: It can grow up to about 10 to 20 metres in length.
A: What is the bottom of the deep sea like
B: It is dark, freezing, and has high pressure. There are also
many unique creatures.
A: Why is it important to research the deep sea
B: Because the deep sea has unique species for research, holds
important resources, and can help control our climate.
四、单项选择。
15.( )There are many children skating on the ____
of the lake.
A. surface B. depth C. sky D. bottom
A
16.( )The boy decided to ____ into the lake to check the old wooden vessel.
A. jog B. fly C. dive D. run
C
17.( )We noticed a(n) ____ smell from the kitchen and found that something was burning.
A. good B. unusual
C. salty D. sweet
B
五、根据汉语意思完成句子。(17分)
18. 这座岛仅高于海平面几米。
The island is only a few metres above ________ ________.
19. 优秀的学习者能将他们正在学的与一些有趣的事物联系起来。
Good learners can ________ what they are learning ________ something interesting.
sea level
connect
with
20.这种动物体型较小，但它的声音很大。
The animal is small ________ ________, but it has a very loud voice.
21.我们学校占地面积超过350000平方米。
Our school has an area of more than 350, 000
________ ________.
in size
点拨：介词短语in size指“在体型、尺寸方面”。同样的用法还有in height, in length等。
square metres
22.［天津模拟］请在你的朋友们到达之前，尽可能快地打扫你的房间。
Please clean your room ____________________________ before your friends arrive.
23. 众所周知，大鲨鱼生活在深海里。
As we all know, big sharks live _____________________.
as quickly as you can
in the deep sea
六、补全对话。(5分)
A: Good morning!
B: 24. ________________________________________
A: Eric, could you help me with my geography homework What is the largest desert in the world Is it the Arabian Desert
B: 25. __________________________ The Sahara is the biggest and the Arabian Desert is the second biggest.
Good morning!
No. it isn’t./No.
A: I see. 26. __________________________________
B: It’s about 9,000,000 square kilometres in size.
A: OK. Next question: 27. ________________________________________________
B: The Caspian Sea. It is bigger than any other salt lake.
A: Which country is the biggest in Asia
B: 28. ________________________________________
How big is the Sahara
what is the biggest salt lake in the world
China./China, of course.
A: Wow, you’re really good at geography. Can you tell me something more about China
B: No problem!
七、［陕西模拟改编］阅读理解。
Historical Importance:
The Nile has been a life source (来源)for thousands of years. The ancient Egyptians(埃及人)depended on the river and its banks for: fresh water, food, transportation, rich soil(土壤) for growing crops.
Interesting Fact:
The name “Nile” is from the Greek word “Neilos”.
It means “valley”(流域).
Sustainability(可持续性):
Around 95% of the Egyptians live near the river bank and millions of tourists visit it every year. A large number of people are causing serious environmental problems. The United Nations and other global organizations are trying to protect the Nile Delta and communities living there.
29.( )We may read the text in a(n) ____ magazine.
A. art B. culture
C. nature D. sports
C
30.( )Which of the following is TRUE according to the passage
A. The Nile flows through 11 Asian countries.
B. The Nile’s length is less than 6, 650 km.
C. You can’t see turtles in the Nile or its banks.
D. About 95% of the Egyptians live near the river bank.
D
31.( )Which piece of the following information is NOT mentioned(提及)in the text
A. How long the Nile is.
B. Where the Nile begins.
C. What the meaning of the name “Nile” is.
D. Why the Nile is important to ancient Egyptians.
B
32.( ) How does the writer present (呈现)the text to help us understand better
A. By offering facts and photos.
B. By comparing different things.
C. By giving different examples.
D. By telling an interesting story.
A
Words:
1. wonder n. 奇观；惊叹 v. 琢磨；想知道；感到诧异—
wonderful adj. 精彩的；绝妙的
2. measure v. 测量；量度为—measurement n. 数量；测量
3. deep adj. 深的；有……深的—depth n. 深(度)；纵深
4. research v. & n. 研究；调查—researcher n. 研究者
5. usual adj. 通常的—unusual adj. 特别的；不寻常的—
usually adv.通常地
Phrases:
1. on earth 在地球上
2. square kilometre 平方千米
3. below/above sea level 低于/高于海平面
4. dive into the deep sea 潜入深海
5. the bottom of …… 的底部

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