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Unit 4 The Wonders of Nature
Section A（3a-4d）
· 学习目标
· 新课导入
· 内容讲解
· 课堂总结
· 课后作业
Learning goals
1. New words: waterfall, civilization, development,
cubic, mile, pool
2. Expressions: by the way; at all costs
3. Sentences: ①We should protect them by all means.
②The noise of the water slowly grew louder and louder.
③It went on for as far as the eye could see.
Lead-in
Do you know rivers in China
Yes/No...
What’s the longest river in China
It’s...
Do you know how long it is
....
New words
waterfall / w t f l/ n.瀑布
civilization / s v la ze n/ (=civilisation)n.文明
development /d vel pm nt/ n. 发展;壮大
New words
cubic / kju b k/ adj.立方的
mile /ma l/ n.英里
pool /pu l/ n.池塘;水坑
waterfall / w t f l/ n.瀑布
civilization / s v la ze n/ (=civilisation)n.文明
development /d vel pm nt/ n. 发展;壮大
cubic / kju b k/ adj.立方的
mile /ma l/ n.英里
pool /pu l/ n.池塘;水坑
New words
Textbook
3a
Read the conversation and underline the three rivers mentioned.
Yaming: Welcome back, Ella! How was your trip
Ella: It was great! We saw the Hukou Waterfall
on the Yellow River. Is that the longest river
in China
Yaming: No, the Yangtze River is the longest river
in China. It travels the farthest and is about
6,300 kilometres long. The Yellow River is
5,464 kilometres long and is the second longest. By the way,
do you know why it's called the Yellow River
Textbook
Ella: Because it's yellow
Yaming: Right. Some parts of the river carry brown and yellow earth.
Ella: That's interesting! I like learning about rivers. My favourite is
the Nile. Did you know it's the longest river in the world
Yaming: Yes, it's 6,671 kilometres long. It's very important in
Egypt's history.
Textbook
Ella: That's right. Both the Nile and the Yellow River helped ancient
civilizations to develop. And they're still very important today.
Yaming: Yes. In China, we even call the Yellow River our
"mother river"!
Ella: We should protect them at all costs.
Language points
1
We should protect them by all costs.
句意：“我们应该想尽一切办法来保护它们。”
by all costs 不惜任何代价
例句：You should by all costs attend the meeting tomorrow—it’s
very important.
你务必参加明天的会议，它非常重要。
Language points
练
1.—May I open the window to let some fresh air in
—______. It’s a bit stuffy here.
A. By no means B. By all costs
C. Never mind D. Take it easy
2.完成句子。
We should ________________（不惜任何代价）protect the environment for our future generations.
B
by all costs
Textbook
3b
What do Yaming and Ella know about these rivers
Read the conversation again and complete the table.
River Country Length Importance
Yellow River _______ _______km helped in the development of
ancient____________
Nile River ________ _______km China
5,464
Egypt
6,671
civilizations
Textbook
3c
Listen to the conversation. Then role-play it.
Textbook
3d
Imagine that you are Yaming or Ella. Continue the conversation with a
partner about other geographical features in China.
Ella: Could you tell me more about China, Yaming
Yaming: Sure! What would you like to know
Ella: What's the biggest desert in China
Yaming: It's the Taklimakan Desert.
Ella: Do you know ...
Textbook
4a
Read the sentences. Circle the adjectives which compare things.
Underline the adverbs which compare actions.
What is the biggest desert in the world It is the Sahara Desert.
How big is it It is about 9,000,000 square kilometres in size.
Where is the deepest point in the ocean It is in the Mariana Trench.
How deep is it It is about 11,000 metres deep.
Some deep-sea animals are blind, but they can "see" as well as others. Mount Qomolangma is one of the greatest wonders of the world, and it is still growing taller. The Yangtze River travels the farthest in China and is about 6,300 kilometres long.
Textbook
4b
Write or spell out the numbers.
1. Mount Kilimanjaro is ________(five thousand, eight hundred and
ninety-five) metres high.
2.__________(twenty-five thousand, seven hundred and sixty-eight)
cubic metres of water pours down Inga Falls each second.
3. The East African Rift Valley is about 4,000 (_____________)
miles long.
4. The Taklimakan Desert has a total area of about 337,000 (________
_____________________________)square kilometres.
5,895
25,768
four thousand
three
hundred and thirty-seven thousand
My friends and I visited Victoria Falls in Africa
last year. Visiting one of the world's ______________ waterfalls was a magical experience. As we went __________ to the falls, the noise of the water slowly grew ________ and louder.
Textbook
4c
Complete the passage with the correct forms of the words in the box.
largest
large amazing
far close loud
closer
louder
Language points
2
The noise of the water slowly grew louder and louder.
句意：“水声慢慢变得越来越大。”
louder and louder 越来越大
比较级+and+比较级 越来越…… ，用于描述事物在程度上持续变化的趋势
例句：The days are getting longer and longer in summer.
夏天白天变得越来越长。
This movie is becoming more and more interesting.
这部电影变得越来越有趣。
Language points
练
1.Our city is becoming ______. More and more people want to
visit it.
A. beautiful and beautiful
B. more beautiful and more beautiful
C. more and more beautiful
D. more beautiful and beautiful
2.适当形式填空。
As winter comes, the weather is getting ______________ (cold).
C
colder and colder
Textbook
4c
Complete the passage with the correct forms of the words in the box.
far
large amazing
far close loud
Then, right before our eyes, the waterfall appeared.
It went on for as ________ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest
but also the ____________ experience of our trip!
most amazing
Language points
3
It went on for as far as the eye could see.
句意：“它一直延伸到目力所及的远方。”
as far as + 从句，表示 “远到…… 的程度
拓展：as+形容词/副词原级+as “和......一样”
例句：The green fields went on for as far as the eye could see.
绿油油的田野绵延不绝，一眼望不到边。
She is as tall as her brother.
她和她哥哥一样高。
Language points
练
1._______ the weather is concerned, we can go hiking
tomorrow.
A. As long as B. As far as
C. As soon as D. As good as
2.完成句子。
这条河流向远方，一眼望不到尽头。（翻译句子）
__________________________________________
B
The river flows away as far as the eye can see.
Write some questions to compare places. Then ask a partner
your questions.
4d
What is the highest ...
Which park is bigger, ... or ...
Textbook
Summary
New words
waterfall, civilization, development, cubic, mile, pool
Expressions
by the way; at all costs
Sentences
1.We should protect them by all means.
2. The noise of the water slowly grew louder and louder.
3. It went on for as far as the eye could see.
Homework
1
Memorize the new words, expressions and sentences in
Section A (3a-4d).
2
Finish the exercises of the test paper on the book 5·3.

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