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(共23张PPT)
Unit 4 The Wonders of Nature
Section B（2a-2c）
· 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: risky, southern, located, freshwater, type, attract, curious,
traveller, natural
2. Expressions: one of
3. Sentences: ①How large is your country
②Lake Baikal is one of the world's most famous lakes.
③But over 1,200 different types of animals can still
survive in this environment.
Lead-in
Do you know Mount Tai
Yes/No ...
Did you have a trip to Mount Tai
Yes/No...
Do you know how high it is
Yes, it’s.../No, I don’t know.
New words
southern / s n/ adj. 南部的;向南的
located /l ke t d/ adj. 位于;坐落在
type /ta p/ n. 类型;种类
risky / r ski/ adj.有危险(或风险)的
freshwater / fre w t (r)/ adj. 淡水的;淡水中生长的
New words
attract / tr kt/ v.吸引;招引
curious / kj ri s/ adj.好奇的;求知欲强的
traveller / tr v l (r)/ (= traveler)n.旅行者;游客
natural / n t r l/ adj.自然的;天然的;天生的
risky / r ski/ adj.有危险(或风险)的
southern / s n/ adj. 南部的;向南的
located /l ke t d/ adj. 位于;坐落在
freshwater / fre w t (r)/ adj. 淡水的;淡水中生长的
type /ta p/ n. 类型;种类
New words
attract / tr kt/ v.吸引;招引
curious / kj ri s/ adj.好奇的;求知欲强的
traveller / tr v l (r)/ (= traveler)n.旅行者;游客
natural / n t r l/ adj.自然的;天然的;天生的
New words
Textbook
2a
Match the words on the left with their opposites on the right.
___1. below ___5. top
___2. common ___6. northern
___3. low ___7. risky
___4. dead ___8. survive
D
A. safe E. unusual
B. bottom F. living
C. southern G. high
D. above H. die
E
G
F
B
C
A
H
Textbook
2b
Read the examples and make more sentences using how and the
words in the box.
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
long high deep low fast soon
1.__________________________ 4.__________________
2.__________________________ 5._____________________
3.__________________________ 6._______________________
How long is the river in your city
How high is the tallest building in your town
How deep is the swimming pool
How old is the book
How fast can a cheetah run
How soon will the movie start
Language points
1
How large “多大” 询问物体的尺寸、范围或规模的大小
How long“多长”问长度 / 时间持续多久
How deep“多深”问深度
How far“多远”问距离
How often“多久一次”问频率
How soon“多久”问 “多久之后”（将来时）
How heavy“多重”提问重量
How large is your country
句意：“你的城市多大？”
Language points
例句：How large is your new apartment 你的新公寓有多大？
How long is the river 这条河多长？
How deep is the lake 这个湖多深？
How far is it from here to the station 从这到车站有多远？
How often do you swim 你多久游泳一次？
How soon will you come back 你多久后回来？
How heavy is the box 这个箱子有多重？
练
Language points
1.—______ do you go to the gym
—Twice a week.
A. How long B. How often C. How soon
2.根据答语写问句。
I have lived in this city for 10 years.
→ ___________ have you lived in this city
B
How long
Textbook
2c
Complete the passage with the correct forms of the words in the box.
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.
deepest
deep survive wonderful surface dive
dive
surface
Language points
2
one of “……之一”
one of + the +形容词最高级+复数名词 “……中最……之一”
one of + 复数名词/代词 “……之一”，强调群体中的某一个成员。
当 one of + 复数名词 作主语时，谓语动词用单数形式（核心词是 one）
Lake Baikal is one of the world's most famous lakes.
句意：“贝加尔湖是世界上最著名的湖泊之一。”
Language points
例句：She is one of the most popular singers in the country.
她是这个国家最受欢迎的歌手之一。
This is one of the oldest buildings in our city.
这是我们城市最古老的建筑之一。
One of my friends is a doctor.
我的一个朋友是医生。
练
Language points
1.This is one of ______ interesting books I have ever read.
A. the more B. most C. the most
2.完成句子。
Yao Ming is a famous basketball player in the world.
（改为one of 结构）→
Yao Ming is ____________________________________________.
C
one of the most famous basketball players in the world
Textbook
2c
Complete the passage with the correct forms of the words in the box.
That is bigger than the country of Belgium! Lake Baikal is cold most of the year. But over 1,200 different types of animals can still ________ in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural _________ !
survive
wonder
deep survive wonderful surface dive
Language points
3
句意：“但超过1200种不同种类的动物仍然能在这个环境中存活。”
different types of “不同种类的”，
后面跟可数名词复数，或不可数名词
different types of + pens different types of + music
同义替换：different kinds of
But over 1,200 different types of animals can still survive in this environment.
Language points
例句：My mother collects different types of teacups from all over
the world.
我妈妈收集来自世界各地的不同款式的茶杯。
There are different types of clouds that predict different
weather conditions.
不同类型的云预示着不同的天气状况。
练
Language points
1.Our school library has ________ for students to borrow.
A. different type of book B. different types of book
C. different types of books D. different type of books
2.适当形式填空。
She enjoys listening to different types of ________ (music).
C
music
Summary
New words
risky, southern, located, freshwater, type, attract, curious, traveller, natural
Expressions
one of
3. But over 1,200 different types of animals can still survive in this environment.
1.How large is your country
2. Lake Baikal is one of the world's most famous lakes.
Sentences
Homework
1
Memorize the new words, expressions and sentences in
Section B (2a-2c).
2
Finish the exercises of the test paper on the book 5·3.

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