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(共38张PPT)
Unit 4　
The Wonders of Nature
第1课时　
Section A(1a—2d)
人教版 八年级 英语（下）
Free talk
It is 8,848.86 metres high.
What’s the highest mountain in the world
How high is it
Mount Qomolangma
Mount Qomolangma is the highest mountain in the world.
Nile River
What do you know about the following numbers
6,671 kilometres long
What do you know about the following numbers
Sahara Desert
about 9,000,000 square kilometres in size
How do we connect with nature
BIG
Question

Look and share
1. Do you know the name of the waterfall in the photo
2. What do you think is special about it
It's Victoria Falls (维多利亚瀑布).
3. What other natural wonders do you know
It’s special for its immense width (about 1,708 meters) and height (about 108 meters), creating a breathtaking scene.
Nile River 尼罗河
Angel Falls
安赫尔瀑布
Mount Qomolangma
珠穆朗玛峰
Dead Sea 死海
Sahara Desert
撒哈拉沙漠
Mariana Trench
马里亚纳海沟
Match the places with the pictures.
1a
A
D
B
E
C
F
Nile River
Angel Falls
Mount Qomolangma
Dead sea
Sahara Desert
Mariana Trench
F
C
A
E
D
B
Listen to the game plete the descriptions of the places.
1b
Place Description Measurement
Mount Qomolangma the . in the world metres high
Sahara Desert the . in the world about square kilometres in size
highest mountain
biggest desert
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
海平面
416 8,848.86 11,000 9,000,000
Host:Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world
Fu Xing: It's Mount Qomolangma!
Host: Correct! How high is it
Liu Hongyu: I know this—it's 8,848.43 metres high.
Host: No, sorry. Fu Xing
Fu Xing: Is it 8,848.86 metres
特殊疑问句 + 形容词最高级
全是关于……
尽可能快地
Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world.
Fu Xing: The Taklimakan Desert
Host: Wrong! Ella
Ella: It's the Sahara Desert.
Host: Right! Now, how big is it
Ella: It's about 9,000,000 square kilometres.
Host: That's right! What's the lowest place on earth
Liu Hongyu: It's the Dead Sea!
变得更高
最大的沙漠
平方公里
最低的地方
Host: Well done! Its surface is 416 metres below sea level. Now where's the deepest point in the ocean
Fu Xing: It's in the Mariana Trench.
Host: That's correct! How deep is it
Fu Xing: It's about 11,000 metres deep.
Host: Correct!
海拔以下；在海平面以下
海沟
米；公尺
1d
Talk about the places you have learnt about.
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...
表面
What’s the lowest place on earth
It’s the Dead Sea.
How low is it
Role-play
Its surface is 416 metres below sea level.
Now, what’s the highest mountain in the world
It’s Mount Qomolangma.
How high is it
It’s 8,848.86 metres high.
2a
What do you know about the deep sea Complete the sentences with the information from the picture.
1. Fendouzhe reached
______________.
2. The deep sea begins at
______________.
3. The Titanic rests at
____________.
4. A whale can dive to
_________________.
潜水
10,909 metres
200 metres
3,800 metres
over 2,000 metres
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
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.
2c
Listen again. Complete the sentences with the facts from the conversation.
2020
blind
light
11,000
ocean floor
Ms Gao: Thank you for the wonderful talk, Mr Jones.
Now, does anyone have any questions
Emma: I do! Why are so many countries researching the deep sea
Mr Jones: Well, curiosity is one reason. We don't know enough about the ocean floor.
Fu Xing: I remember that in 2020, China's Fendouzhe dived deeper into the Mariana Trench than many other submersibles in the world and filmed it. But I didn't see any deep-sea animals. What are they like
好奇心
海底；洋底
拍摄（电影 / 视频）
深海动物
Mr Jones: Well, many deep-sea animals are large and unusual. Some animals are blind, but they can "see" as well as others. Some even create their own light!
Peter: Cool! Are there any other surprising facts about the deep sea
Mr Jones: Did you know that there's rubbish even at 11,000 metres deep
That shocked many people.
Ms Gao: That's terrible! We should do something about it.
Mr Jones: You're right!
和…… 一样好；也
create one's own light 自己发光
对此采取行动
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
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.
e.g.
Language points
1、The Wonders of Nature 自然奇观
wonder的用法
(1)作名词，意为“奇观；惊叹”。
常用短语：
in wonder惊奇地
with wonder带着惊奇
do wonders创造奇迹；产生神奇作用
(be) filled with wonder充满惊奇
It's no wonder (that)…/No wonder (that)… 难怪……
This new medicine does wonders for my back pain.
这种新药对我的背痛有奇效。
Mike was late again.No wonder the teacher was angry.
迈克又迟到了。难怪老师生气了。
(2)作动词，意为“琢磨；想知道；感到诧异”，后常接疑问词（who，what，why等）或 if/whether 引导的宾语从句。
I wonder what happened to him.
我想知道他发生了什么事。
2、 416 metres below sea level 低于海平面416米。
below prep. & adv.在 (……)下面；低于
(1)作介词，意为“在(……)下面；低于”，其反义词为above，意为“在(……)上方；高于”。
Please do not write below this line.
请不要写在这条线下面。
【辨析】below与under
两者都可表示“在……下面”，但 below 通常与参照物无接触，且不一定是正下方；而 under 则强调处于物体的垂直正下方，可以有接触，也可以没有。
(2)作副词，意为“在(……)下面；低于”，用于描述位置状态，后面不接宾语。
She lives on the floor below.
她住在楼下。
3、research的用法
(1)作名词，意为“研究；调查”，通常为不可数名词。其后常接介词 on或into来引出研究的内容。
He is doing research on ancient history.
他正在从事古代史研究。
(2)作动词，意为“研究；调查”。它既可用作及物动词，后直接接宾语；也可用作不及物动词，后接介词in、into或on，意为“对……进行研究”。
3、unusual的用法
形容词，意为“特别的；不寻常的”，在句中既可作定语又可作表语。
It was an unusual gift.这是一份不寻常的礼物。
The gift seems unusual.这份礼物似乎很不寻常。
【拓展】unusual的反义词是usual，意为“通常的；寻常的”。
Homework
1．Recite the names of the six natural wonders in 1a and master the core data in 1b.
2．Describe your favorite natural
wonder in 3 to 5 sentences，
including its features and data.

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