Save the Tigers Unit 3 Animals Are Our Friends Lesson 17 Edited by Ye Xuemei

Lead-in Let’s enjoy a video.

1. Where can you usually see a tiger? Think about it! 1. Where can you usually see a tiger? 2. Do you think tigers need our help? Why or why not? 3. What can we do to protect wild animals?

To use the following words and expressions correctly: century, courage, brave, reason, kill, cut, at the beginning of…, drop to, food chain, in balance, in danger, cut down, as well To know about the urgency(紧急性) of protect tigers To know about the relevant measures of protecting wild animals To foster students’ awareness of protecting animals .

Words and Expressions century ['sɛntʃəri] n. 世纪 fur [fɜː] n.（兽类的）毛 symbol courage brave chain  ['sɛntʃəri] n. 世纪 [fɜː] n.（兽类的）毛 ['sɪmbl] n. 标志，象征 ['kʌrɪdʒ] n. 勇气，胆量 [breɪv]  adj. 勇敢的，无畏的 [tʃeɪn] n. 链子；链条

Words and Expressions balance ['bæləns] n. 平衡，平稳 reason disappear kill cut decrease ['bæləns] n. 平衡，平稳 ['riːzn] n. 原因，动机，理由 [dɪsə'pɪə] v. 消失，失踪  [kɪl] v. 杀死 [kʌt]  v. 砍，切，剪，割 [dɪ'kriːs] v. 使……变小；减少

Words and Expressions at the beginning of 在….之初 drop to 跌至，下降到 food chain 食物链 in balance 保持平衡 in danger 处于危险状态、 cut down 把…砍到，减少 as well 也，还

or in the wild? in a cage?

Types of tigers The Bengal tiger The Siberian tiger The Sumantran tiger The Malayan tiger The Indochinese tiger The South China tiger

the Bengal tiger(孟加拉虎)

the Siberian tiger（东北虎）

the Sumatran tiger（苏门答腊虎）

the Malayan tiger （马来亚虎）

the Indochinese tiger（印度支那虎）

the South China tiger（华南虎）

Analysis of the text Save the Tigers Paragraph1 Paragraph2 Paragraph3 Read the lesson and find some sentences to support the main idea of each paragraph. Save the Tigers Paragraph1 Paragraph2 Paragraph3

Ⅰ Analyze the Paragraph 1 “Save the Tigers” is a volunteer group that hopes to save the tigers of the world. Paragraph1 “Save the tigers” is a group of volunteers. These volunteers hope to save the tigers of the world. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. But today that number has dropped to a few thousand.

Tigers are important to the environment. Ⅱ Analyze the Paragraph Paragraph 2 Tigers are important to the environment. Tigers live in the forests of Asia. They usually have orange fur and dark stripes. Tigers are symbols of the strength and courage. In many stories, they are brave. 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 enviroment.

Ⅲ Analyze the Paragraph Tigers are in danger of going extinct. In recent years, tiger have been in danger of disappearing. Some people hunt and kill tigers for money. People have cut down a lot of trees as well. As forests disappear, tigers lose their homes. The number of tigers in the wild is quickly decreasing and we must do something about it.

Language points 1. These volunteers hope to save the tigers of the world. 这些志愿者希望能拯救世界上的老虎。 hope: 希望；常用动词不定式hope to do sth，意为“希望做某事”。类似的词语如want, wish, agree, learn, decide, refuse 等后面也常用动词不定式作宾语。 eg. I decided to find a part-job during this summer holiday. 我决定在这个暑假期间找份兼职。

2. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. 在二十世纪初期，野生老虎的数量大约是十万只。 at the beginning of :在….之初 eg. We will talk about this matter at the beginning of the next week. 我们将在下周初讨论这件事情。 3.the number of: 意为“……的数量”，后加名词，做主语时谓语动词要用单数形式： a number of: 意为“一些….”，后加可数复数名词。 eg. ①The number of the students in our class is 50. 我们班学生的数量是50. ②A number of students in our class like pop musics. 我们班有一些学生喜欢流行音乐。

4. But today that number has dropped to a few thousand. 但是今天它们的数量已经降到几千只 drop to: 跌至，降到。 eg. These days the temperature in night dropped to below zero. 这些天晚上的温度降到了零度以下。

5. Tigers are symbols of strength and courage. 老虎是力量与勇气的象征。 eg. Sometimes blue is symbol of sadness. 有时蓝色是伤感的象征。 其动词形式为symbolize,意为：象征，代表。 eg. Olive branch symbolizes peace. 橄榄枝象征着和平。 courage: 勇气，胆量。不可数名词。 eg. They need great courage to do this kind of decision. 他们需要巨大的勇气来做出这样的决定。

6. The tiger is at the top of the food chain.老虎在食物链的最顶端。 eg. An old temple was at the top of the mountain. 一座古老的寺庙矗立在山顶。 7. It helps keep the number of other wild animals in balance.它有助于使其他野生动物保持平衡。 keep…. in balance:使…. 保持平衡。 eg. We need to keep our playing and studying time in balance. 我们必须让我们玩乐时间和学习时间保持平衡。

8.For this reason, tigers are important to the environment. 因为这个原因，老虎对环境很重要。 be important to sb./sth. ……对……来说是重要的。 be important for sb./sth to do sth. 对于……来说做……是重要的。 eg: Time is important to me. 时间对于我来说很重要。 It is important for you to get there early. 对我来说早点到那是很重要的。

9. In recent years, tigers have been in danger of disappearing. 在近几年，老虎处于濒临灭绝的危险中。 in danger of意为“处于……危险之中”。 eg. The passengers are in danger! Let’s go and help! 乘客们处于危险中！我们快去帮忙！ 10. People have cut down a lot of trees as well. cut down :把…..砍到，减少 eg: Half of the forest was cut down to make room for the road. 为了给新公路腾出地方，这片树林已经被砍去了一半 11.As forests disappear, tigers lose their homes. 随着森林的消失，老虎失去了它们的家园。 as在句中作连词，引导状语从句，意为“随着，当……的时候”。 As the sun rose, the fog disappeared. 随着太阳升起，雾渐渐消失了。

Summary Fill in the blanks and try to retell the text. At the beginning of the 20th century, ______________ tigers in the wild was around 100000. But today that number ____________ a few thousand. Tigers are ____________ to the environment. They help keep the number of other wild animals _________. But in recent years, tigers have been in danger of ___________. Some people ____________ tigers ____ money. We must do something about it. the number of has dropped to important in balance disappearing hunt and kill for

Discussion After learning the whole text, let’s share a vedio about protecting animals, then with your partners discuss some ways and measures of protecting animals.

Homework Review Lesson 17 and finish the exercises in excise book. 2. Write a short passage about how to protect animals.