资源简介

(共18张PPT)
Section B (2a~2c)
Unit 4
The Wonders of Nature
能掌握 below、common、risky、survive、deep 等词汇及反义词的对应关系，感知 how + 形容词/副词 特殊疑问句的用法，准确认读并理解词义。
通过造句、短文填空等练习，内化 located、survive、deep 等词汇的用法，能正确使用 how long/high/deep 等结构提问，并能在语篇中运用目标词汇完成填空。
学习目标
01
02
What do you know about Lake Baikal
Would you like to join our adventure team to explore it
Lead in
Before the adventure, let’s learn some opposite words.
Sahara Desert撒哈拉大沙漠
large
small
Mount Qomolangma珠穆朗玛峰
high
long
The Nile 尼罗河
low
short
Taklimakan Desert塔克拉玛干沙漠
Mount Tai 泰山
The Yellow River 黄河
Match the words on the left with their opposites on the right. 1. below A. safe
2. common B. bottom
3. low C. southern
4. dead D. above
5. top E. unusual
6. northern F. living
7. risky G. high
8. survive H. die
Can you give more examples
2a
Before the adventure, let’s learn some about “How”.
Sahara Desert撒哈拉大沙漠
Mount Qomolangma珠穆朗玛峰
The Nile 尼罗河
How large is the Sahara Desert
How high is the Mount Qomolangma
How long is the Nile River
It’s about 9,320,000 square kilometres.
It’s about 8,848.86 metres high.
It’s about 6,670 kilometres long.
To ask about size, distance, frequency...,
we can use “How + adj/adv” + 一般疑问句语序的结构”
How far is it from your home to school
How heavy is a blue whale
How large is your country
How often do you exercise
Read the examples and make more sentences using how and the words in the box.
多远
多重
多大
多久一次
2b
Read the examples and make more sentences using how and the words in the box.
long high deep low fast soon
1．____________________________________
2．____________________________________
3．____________________________________
How long is the river
How high is Mount Qomolangma
How deep is this lake
多长
多高
多深
4．____________________________________
5．____________________________________
6．____________________________________
How low was the temperature yesterday
How fast can you run
How soon will they arrive
多低
多快
多久
2b
Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. It is the _______ freshwater lake in the world. To reach the bottom, you must ____ 1,620 metres! It is also larger than most other lakes. Its _______ covers 31,500 square kilometres. That is bigger than the country of Belgium! Lake Baikal is very cold for most of the year.
But over 1,200 different types of animals can still _______ in this __________ . Today,
the lake still attracts many curious travellers. After all, it is a great natural ________!
deep environment survive wonderful surface dive
Complete the passage with the correct forms of the words in the box.
deepest
dive
surface
survive
environment
wonder
Now let’s learn Lake Baikal!
2c
Lake Baikal
贝加尔湖位于俄罗斯西伯利亚南部，是世界上最深的淡水湖，也是亚欧大陆最大的淡水湖。湖泊呈新月形，最深处达1620米，占全球地表淡水20%。
Let’s learn
【拓展】risk v.使……冒风险 (或面临危险) n. 危险；风险
(1)[动词]使……冒风险(或面临危险)；冒险做
risk one’s life (to do sth.)冒着生命危险(做某事)
He who risks nothing, gains nothing. 不入虎穴，焉得虎子。
It takes lots of love and courage to risk their own lives to save someone else’s. 冒着自己的生命危险去救别人需要很多爱和勇气。
Don’t risk running the machine yourself. 不要冒险自己去操作机器。
1. risky adj. 有危险(或风险)的
Doctors say it’s too risky to do the operation. 医生说动手术风险太大。
Language points
(2)[可数名词]&[不可数名词]危险；风险
take risks/take a risk 冒险
the risk of... ……的风险
at risk 处境危险，受到威胁
take/run the risk of doing sth. 冒险做某事
We do not expect untrained people to take risks.
我们不希望未经培训的人员去冒险。
We don’t want to run the risk of losing their business.
我们不想冒失去他们的生意的风险。
2. curious adj. 好奇的；求知欲强的
可作定语或表语。
be curious about 对……好奇
He is such a curious boy, always asking questions.
他这个孩子好奇心很强，总是爱提问。
As a child, I’m curious about the UFO.
作为一个小孩，我对不明飞行物感到好奇。
【拓展】curiously[副词]好奇地
“ Are you an artist ” Sara asked curiously.
“你是画家吗？ ”萨拉好奇地问道。
是curious(adj. 好奇的；求知欲强的)的名词形式。
Children show curiosity about everything.
儿童对一切事物都显露出好奇心。
Learning can be exciting when you follow your curiosity!
当你追随自己的好奇心时，学习会变得令人兴奋！
【拓展】curiosity n. 好奇心；求知欲
3. natural / n t r l/ adj. 自然的；天然的；天生的
自然的；天然的
常见搭配：natural resources/beauty/environment 自然资源/美景/环境
We can enjoy the natural beauty in the mountains.
我们可以欣赏大山里的自然美景。
天生的；本能的
It’s natural for people to wonder and worry about opinions of others.
好奇和在意别人的想法是人的天性。
【拓展】nature n.大自然 naturally adv. 自然地
一、单项选择
( )1. After the heavy rain, we were surprised to find the little bird in the tree was still ______.
A. live B. alive C. lovely D. lively
( )2. Zhujiajiao is an amazing ancient town and it ______ millions of tourists every year.
A. attracts B. develops C. encourages D. takes
( )3. Lake Baikal, Located in Siberia, Russia, is one of the world's ___lakes.
A. more famous B. most famous C. famous D. famousest
( )4. There are so many ______ of smart phones in this shop. I really don’t know which to buy.
A. parts B. types C. sizes D. customers
B
A
B
B
当堂检测
1.Many kinds of birds spend winter in the _________(south) part of China.
2.We saw many______(type) of colourful fish swimming happily in the clear stream yesterday.
3.________(nature) resources are important for us. And we should use them wisely.
4.The little boy was _______(curiosity) about how the clock worked, so he took it apart carefully.
5.As ________(travel), we should remember: When in Rome, do as the Romans do.
6.It’s _____(risk) to cross the road without looking both ways first.
southern
二、用括号中所给单词的适当形式填空
types
Natural
curious
travellers
risky
使用至少5个本课词汇，写一段介绍贝加尔湖或者你最喜欢的自然景观的短文。
Homework

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