Unit 3 Animals Are Our Friends.Lesson 17 Save the Tigers.教学课件

课件18张PPT。Unit 3Lesson 17
Save the Tigers1. Where can you usually see a tiger?2. Do you think tigers need our help ?
Why or Why not?Think About It：century n. 世纪
fur n. (兽类的)毛
symbol n. 标志；象征
courage n. 勇气；胆量
brave adj. 敢的；无谓的
chain n. 链子；链条new wordsbalance n. 平衡；平稳
reason n. 原因；动机；理由
disappear v. 消失；失踪
kill v. 杀死
cut (cut/cut) v. 砍；切；剪；割decrease v. 使......变小；减少new wordsthe Bengal tigerthe Siberian tiger [sai'bi?ri?n] [be?'ɡ?:l]There are currently six types of tigers:西伯利亚虎 孟加拉虎the Sumatran tigerthe Malayan tiger [su'mɑ:tr?n][m?'lei?n]苏门答腊虎 马来亚虎 the Indochinese tigerthe South China tiger印度支那虎 华南虎 1. What's “save the tigers”? It's a group of volunteers for tigers saving2.Tigers are important to the environment, aren't you? Yes, they are3. Why have tigers been in daner of disappearing?One is people hunt and kill tigers, the other is people cut the tree to make forest disappearing.Task 1:Read the lesson and answer the questionsTask 2:

Read the lesson and match each gragraph with its main idea. Save the TigersParagraph 1Paragraph 2Paragraph 3BCAA. 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.Task 3:Read the lesson again and find some sentences to support the main idea of each paragraph.Save the TigersParagraph 1Paragraph 2Paragraph31. “Save the tigers” is a group of volunteers.2. These volunteers hope to save the tigers of the world.1. Tigers live in the forests of Asia.2. The tiger is at the top of the food chain.1. Some people hunt and kill tigers for money.2. As well, people have cut down a lot of trees.Language Notes1.the number of与a number of的辨析
(1)the number of是固定短语, 意为“……的数量”, 后接可数名词复数, 但中心词是number, 所以谓语动词要用单数。
(2)a number of为量词短语, 意为“许多; 大量”, 相当于a lot of或lots of, 中心词是该短语所修饰的可数名词复数, 所以作主语时, 谓语动词用复数形式。
【即学活用】
①-A number of volunteers______willing to teach in China’s rural areas.
—Yes, the number is getting______.
A. is; bigger and bigger
B. are; bigger and bigge
C. is; more and more
D. are； more and more
B②(2015·益阳中考)—How many women doctors are there in your hospital?
—______them______over twenty.
A. A number of; are
B. The number of; are
C. The number of; is
C2. as well还; 也
*People have cut down a lot of trees as well.
人们还砍伐了许多树木。
*I write my own songs and I play the guitar as well.
我自己作曲, 也弹吉他。
3.danger n. 危险
In recent years, tigers have been in danger of disappearing.
近年来, 老虎已经面临消失的危险。
dangerous是形容词, 表示“危险的”, 指本身对他人或他物有危险。
例如: The dog looks dangerous.
这条狗看起来很危险。【即学活用】
选词填空(danger, dangerous)
①Please be careful, or you will be in _______.
②Don’t play with fire. It’s _________. dangerdangerous根据首字母提示用本课学的单词填空
1. A tiger is the s______ of c________ .
2. Animals are decreasing in recent c__________.
3. We should not k______ any animals or c______ any plants.
4. One of the r_______ of tiger decreasing is forests are disappearing.
5. We all believe that the boy is very b_________.
PracticeymbolourageenturiesilluteasonsraveHomeworkDiscuss how to protect animals. Write down the ways.