冀教版 八年级下Unit 3 Lesson 17 Save the Tigers 课件（共25张PPT）

(共25张PPT)
Unit 3 Animals Are Our Friends
Lesson 17 Save the Tigers
Six types of tigers
the Bengal tiger
孟加拉虎
the Siberian tiger
西伯利亚虎
the Sumatran tiger
苏门答腊虎
Six types of tigers
the Malayan tiger
马来亚虎
the Indochinese tiger
印度支那虎
the South China tiger
华南虎
words
century / sent ri/
fur /f (r)/
symbol / s mb( )l/
courage / k r d /
brave /bre v/
chain /t e n/
n. 世纪
n. （兽类的）毛
n. 标志，象征
n. 勇气，胆量
adj. 勇敢的，无谓的
n. 链子，链条
centuries
bravely adv.
勇敢地
words
balance / b l ns/
reason / ri zn/
disappear / d s p (r)/
kill /k l/
cut /k t/
decrease /d kri s/
n. 平衡，平稳
n. 原因，动机，理由
v. 消失，失踪
v. 杀死
v. 砍，切，剪，割
v. 使……变小，减小
balanced adj.
平衡的
appear v. 出现
cut-cut-cut
PHRASEs
at the beginning of…
drop to
food chain
in balance
in danger
cut down
as well
在……之初
下降到，跌至
食物链
保持平衡
处于危险状态
把……砍刀，减少
（除某人或某事外）还，也
drop-dropped-dropped
cut of danger
脱离危险
Have a try
The boy has great _________(勇气), So he is very b________.
Why are you late again Please give me a r___________.
Two _____________(century) means two hundred years.
___________(kill) animals is bad for ourselves.
The ________(链条) of the bike was broken. I have to repair it.
courage
rave
eason
centuries
Killing
chain
THINK ABOUT IT
Where can you usually see a tiger
Do you think tigers need our help Why or why not
Read the Paragraph1 carefully and do the exercises.
1.“Save the tiger”is _____.
A. a group of volunteers B. a company C. a zoo
2. At the beginning of the 20th century，the number of tigers in the wild was around______.
A. 1000 B. 10 000 C. 100 000
3. Today that number has _________to a few thousand.
A
C
dropped
Read the Paragraph2 and fill in the blanks.
Tigers live in the forests of Asia .
They usually have __________and ___________.
Tigers are symbols of _________ and _________.
The tiger is at the top of the ____________.
It helps _____ the number of other wild animals __________.
orange fur
dark stripes
strength
courage
food chain
keep
in balance
Read the Paragraph3 and do the exercises.
1. People has cut down a lot of trees____________.
2.What has happened to tigers in recent years
________________________________________________
3. The number of tigers in the wild is quickly decreasing and we must do something about it.
_________________________________________________
as well
In recent years, tigers have been in danger of disappearing.
老虎的数量正在锐减，我们必须对此采取行动。
Read the lesson and match each paragraph with its main idea .
Save the Tigers
Paragraph 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 .
Paragraph 2
Paragraph 3
B
C
A
2) Read the lesson again and find some sentences to
support the main idea of each paragraph .
Save the Tiger
Paragraph 1
Paragraph 2
Paragraph 3
“Save the tigers ” is a group of volunteers.
These volunteers hope to save the tigers of the world.
But today that number has dropped to a few thousand.
The tiger is at the top of the food chain.
It helps keep the number of other wild animals in balance.
Tiger live in the forest of Asia.
Some people hunt and kill tigers for money.
People has cut down a lot of trees as well.
As forests disappear, tigers lose their homes.
Language points
1. The number of tigers in the wild was around 100 000 . 野生老虎的数量大约是10万。
the number of...“……的数量”+ 复数名词，作主语时，谓语动词用单数。
The number of the students in the classroom_______ 43.
e.g. 许多人在公园里。
A number of students are in the park.
is
a number of...“许多，大量”，相当于many + 复数名词
2. It helps keep the number of other wild animals in balance.
这能够帮助保持其它野生动物数量平衡。
This person nearly fell off the rope, but he ______(keep) himself in balance at last.
kept
keep…in balance “保持……平衡
3. In recent years，tigers have been in danger of disappearing.
近些年来，老虎一直有消失的危险。
In recent years 近些年来，与现在完成时连用。
I __________(visit) the Great Wall many times in recent years.
have visited
In danger of + sth./doing sth. “处于……危险之中”
e.g. 你处于的感冒的危险中。
You are in danger of catching a cold.
4. People have cut down a lot of trees as well.
人们也砍倒了许多树。
cut down “砍倒” cut-cut-cut cutting
e.g. 你能把它砍倒吗？
Can you cut it down
含义 用法
also 也，还 实意动词前，情/be/助后
He is also a student. / I also like English.
too 也 常用于肯定句句末，一般用逗号隔开
He studies hard, and I study hard, too.
either 也 否定句句末，一般用逗号隔开
If you don’t go shopping, I won’t, either.
as well 也 通常位于句末，不用逗号隔开
I can do it as well.
5. As forests disappear，tigers lose their homes .
随着森林的消失，老虎们失去了家园。
as“随着，当……时候”
e.g. 随着太阳升起，雾消失了。
As the sun rise, the fog disappeared.
1．I like English. Tom likes it________．
A．either B．also C．as well as D．as well
2．Pandas are much loved around the world. Unluckily, there aren't many pandas left and they're ________ now. So we must save them.
A．in order　 B．in danger　 C．in need
D
B
【点拨】句意：我喜欢英语，汤姆也喜欢英语。as well也，常位于句末。故选D。
3．There ________ a number of books in the library and the number of them ________ increasing.
A．has; is　 B．have; are　C．are; is　 D．is; are
C
【点拨】采用主谓一致法。句意：图书馆有大量的书，并且书的数量正在增加。a number of 大量的，后接可数名词复数，根据there be句型的就近原则，应用there are；the number of 作主语，be动词用is。
4．________the story, the little boy returned home and stayed with his parents.
A．By end of B．At the beginning
C．At the end of D．In the end
C
【点拨】运用短语辨析法。at the beginning of意为“在……之初”；at the end of 意为“在……的结尾/末端”。句意为：“在故事结尾，小男孩回到家，和他的父母呆在了一起。”故选C。
5．—Could you help me ________ the beef for dinner, Jean
— OK, Mom. I'll do it right away.
A．take off B．knock off
C．cut down D．cut up
D
【点拨】考查动词短语辨析。句意：——琼，你能帮助我把牛肉切碎作晚餐吗？——好的，妈妈。我立刻去做。take off“起飞，脱下”；knock off“停止，中断”；cut down“削减，砍倒”；cut up“切碎”。结合题意可知本题选D。
6．这个月初他们的儿子出生了。
Their son was born ___ ___ __________ _____this month.
7．吉姆也要来参加聚会。
Jim is coming to the party ________ ________．
8．荷兰队已降至第五名。
The Dutch team ________ ________ ________ fifth place.
9．目前，大象处于巨大的危险中。(眉山)
So far, the elephants are ________ great ________.
10．自然界的食物链应保持平衡。
The_____ ______in nature should be ________ ________.
at the beginning of
as well
have dropped to
in danger
food chain in balance