(共30张PPT)
Unit 3 Animals Are Our Friends
Lesson 17 Save the Tigers
1. To master the new words and phrases
century, fur, symbol, courage, brave, chain, balance, reason, disappear, kill, cut, decrease, in the beginning of…, the number of…, keep… in balance, as well
2. To learn about the situation the tigers face.
3. To be able to talk about the ways we can do to protect the animals.
Learning objectives
Warm up
What animal do you know are dying out
New words and expressions.
century
fur
symbol
courage
brave
chain
n. 世纪
n. （兽类的）毛
n. 勇气；胆量
n. 标志；象征
adj. 勇敢的；无畏的
n. 链子；链条
New words and expressions.
balance
reason
disappear
kill
cut
decrease
n. 平衡；平稳
n. 原因；动机；理由
v. 杀死
v. 消失；失踪
v. 砍；切；剪；割
v. 使……变小；减少
Fill in the blanks.
1. There are 100 years in a _______(世纪).
2. The rose is regarded as a _______(象征) of love in both China and some Western countries.
3. He faced his illness with great _______(勇气).
4. The _______(勇敢的) boy put out the fire with a blanket at last and saved the old woman.
5. Could you tell me the _______(原因) for your long silence
6. The police are trying to find out who _______(杀死) the old man.
century
symbol
courage
brave
reason
killed
Think about it.
· Where can you usually see a tiger
· Do you think tigers need our help Why or why not
Read the lesson and match each paragraph with its main idea.
1
A. Tigers are in danger of going extinct .
B. “Save the Tigers” is a volunteer group that hopes to stop the tigers from disappearing .
C. Tigers are important to the environment .
Save the Tigers
Paragraph 1
Paragraph 1
Paragraph 1
B
C
A
____________________________________________________________________________________________________________________________________________
Read the lesson again and find some sentences to support the main idea of each paragraph.
2
Save the Tigers
Paragraph 1
“Save the tigers ” is a group of volunteers.
These volunteers hope to save the tigers of the world.
____________________________________________________________________________________________________________________________________________
___________________________________
Read the lesson again and find some sentences to support the main idea of each paragraph.
2
Save the Tigers
Paragraph 2
The tiger is at the top of the food chain.
It helps keep the number of other wild animals in balance.
For this reason . tigers are important to the environment.
_________________________________________________________________________________________________________________________________________________________________________________________
Read the lesson again and find some sentences to support the main idea of each paragraph.
2
Save the Tigers
Paragraph 3
In recent years, tigers have been in danger of disappearing.
As forests disappear, tigers lost their homes.
The number of tigers in the wild is quickly decreasing and we must do something about it.
Language Points
At the beginning of the 20th century, the number of tigers in the wild was around 100 000.
在……之初
……的数量
【探究】
at the beginning of… 表示“在……之初”，其后常接
表示时间的词。beginning在此处作名词，意为“开始”。
in the beginning 意为“起初，起先”，相当于at first。
eg: She left here at the beginning of this month.
Everything’s hard in the beginning.
这件事发生在21世纪初。
The event happened ______ ______ __________ ______ the 21st century.
at the beginning of
【辨析】
the number of… ……的数量，后接复数可数名词，作主语时，谓语动词用单数形式。
a number of “许多”，相当于many，可被large, small, great等修饰，后接复数可数名词，作主语时，谓语动词用复数形式。
eg: The number of the students in the room is 20.
A great number of girls like shopping online.
The number of the students _____ over 2 000 in our school.( )
A. is B. are
C. was D. were
A
The tiger is at the top of the food chain. It helps keep the number of other wild animals in balance.
For this reason, tigers are important to the environment.
原因
保持……的平衡
【探究】
keep… in balance 使……处于平衡状态；保持……的平衡。
该短语的结构为：keep+宾语+ 宾语补足语（介词短语)，其中宾补还可以是名词、形容词或动名词等。
eg: Keep your life in balance.
The ecological environment should be kept in balance.
让鸟类的数量保持平衡这很重要。
It’s ________ to keep the number of birds _____ ______.
important in balance
【探究】
reason常和for连用，意为“……的原因”，但和because不在一个句子中出现。
eg: The most important reason for coming to university is to work for a degree. Financial stress is well established as a chief reason for divorce.
-Look! The boss is angry with Alex.
-Well, he came late again. But there’s no _____ to shout at him.( )
A. problem B. lesson
C. excuse D. reason
D
People have cut down a lot of trees as well.
还；也
【辨析】
as well 用于肯定句，总是用在句末。
too 用于肯定句，常位于句末。可与as well互换。
either 用于否定句，位于句末。
also 用于肯定句，位于be动词、情态动词或助动词之后，行为动词之前。
eg: Are they coming as well
He likes China, too.
She is not a Japanese. I’m not, either.
We are also students.
He speaks English and French _____.( )
A. also B. either
C. as well D. neither
C
Work in groups and discuss some ways we can protect animals. Write down your ideas.
3
Do not buy clothes made of animal fur.
Do not hunt any animals for their fur and bones.
Do not cut down trees.
Protect the environment.
Choose the correct answer.
1. After reading the novel Treasure Island, Paul has more _____ than before because of the main character, brave Jim.( )
A. humour B. wealth
C. luck D. courage
2. In China, the color red is the _____ of good luck.( )
A. dream B. way
C. symbol D. reason
D
C
Choose the correct answer.
3. In the past few years there _____ great changes in m hometown.( )
A. had been B. have been
C. Were D. are
4. -The number of tourists _____ over 33 million this year.
-Yes. A large number of tourists _____ so far because of the new look of our city.( )
A. is; have come B. is; has come
C. are; has come D. are; have come
B
A
Fill in the blanks with the correct forms of the words.
1. Literature(文学) helps us think and encourages us __________(open) our minds.
2. We should take action to protect animals in __________(dangerous).
3. We live in the __________(twenty- one) century.
4. Some wild animals may __________(appear) forever if we don’t stop hunting them.
to open
danger
twenty-first
disappear
Summary
century, fur, symbol, courage, brave, chain, balance, reason, disappear, kill, cut, decrease, in the beginning of…, the number of…, keep… in balance, as well
GOOD JOB
