冀教版英语八年级下册Lesson 17课件

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1、八年级英语（JJ下）教学课件,Lesson 17: Save the Tigers,Unit 3,1. 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. 2. To know the urgency of protecting tigers.,Learning Targets,cent

2、ury fur symbol courage brave chain,n. 世纪 n. （兽类的）毛 n. 标志；象征 n. 勇气；胆量 adj. 勇敢的；无畏的 n. 链子；链条,Words and expressions,balance reason disappear kill cut decrease,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；减少,Now we are in the 21st century. 我们现在处于21世纪。,The puppies havent got much fur yet. 这些小狗还没

3、长出多少毛。,The dove is the symbol of peace. 鸽子是和平的象征。,If youre ready to face danger or pain, you are brave. 如果你准备好面对危险 或痛苦了，你很勇敢。,The firefighters showed great courage in firefighting. They are brave. 火警在救火中展示了极大的勇气。他们很勇敢。,food chain,The shark is on the top of the sea food chain. 鲨鱼处在海洋食物链的顶端。,If the st

4、ones are not in balance, they will fall. 如果这些石头不平衡，它们就会掉落下来。,You didnt go to the party. Can you tell me the reason? 你没有去晚会。你能告诉我理由吗？,The rainbow is beautiful.,Now we cant see it. It disappeared. 彩虹很漂亮。 现在我们看不到了。 它消失了。,The man is cutting down a tree. 这个人正在砍树。,Be careful. Dont cut your fingers. 小心。不要切

5、到手指。,We can cut the cloth with scissors. 我们用剪刀剪布。,Ben thinks he is too fat. He hopes to decrease the amount of fat he eats. 本觉得他太胖了。他希望减少脂肪的摄入量。,century fur symbol brave courage chain balance reason disappear cut decrease,We paper with scissors. Id like to know the why you love your pet dog so much.

6、 The plane flew higher and higher till it in the sky. The tiger is the symbol of . The _ man jumped into the cold river and save the boy.,cut,reason,disappeared,brave,courage,Fill in the blanks with the new words and phrase.,6. The number of the tigers in the wild quickly these years. 7. Alan Turing

7、 made the first computer in the last _ . 8. The _ on the bear is dark brown. 9. The little girl wears a _ of roses on her hair.,decreases,century,fur,chain,Lets learn about tigers .,There are six types of tigers currently .,The Malayan tiger(马来亚虎),The Indochinese tiger (印支虎),Lead in,The South China

8、tiger(华南虎),The Sumatran tiger(苏门答腊虎),The Siberian tiger(西伯利亚虎),The Bengal tiger(孟加拉虎),Do you think tigers need our help ? Why or why not ?,Where can you usually see a tiger ?,Think about it,Listen and tick the correct answers.,1. “Save the tigers ” is . a group of volunteers. B. a company C. a zoo 2

9、. Tigers are symbols of . Friendship and peace B. strength and courage C. danger and balance 3. The number of tigers in the wild is .A. not changing B. increasing C. decreasing,A,B,C,How did the number of tigers changing?What is the reason tigers are important to the environment?Why do people hunt a

10、nd kill tigers?,Read the passage and answer the questions.,At the beginning of the 20th century, the number of tigers in the wild was around 100 000. But today that number hasdropped to a few thousand.,The tiger is at the top of the food chain. It helps keep the number of other wild animals in balan

11、ce.,Some people hunt and kill tigers for money.,Tigers are in danger of going extinct. “Save the Tigers” is a volunteer group that hopes to stop the tigers from disappearing. C. Tigers are important to the environment.,Read the lesson and match each paragraph with its main idea.,A,C,B,Lets Do It!,1,

12、Read the lesson again and find some sentences to support the main idea of each paragraph.,2,“Save the Tigers” is a group of volunteers. These volunteers hope to save the tigers of the world.,Tigers are important to the environment.,In recent years, tigers have been in danger of disappearing.,3,First

13、ly, I think we must stop killing the rare birds and animals, especially the young ones.Secondly, we have to protect the environment, to make the sky blue, to make the grass green, to give the animals a comfortable space to live. its not only for the animals but also ourselves. Finally, we should tel

14、l more and more people why and how to protect the animals, make everyone do this.,Work in groups and discuss some ways we can protect animals. Write down your ideas.,1. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. a number of意思是“一些，若干”（= some），后接可数名词复数或代

15、词，谓语动词用复数形式。还可以加入形容词表示数量大或小等（例如：a large/small number of许多/少数）。例： There are a large number of monkeys in the zoo .动物园里有很多猴子。,Language points,the number of意思是“的数字/数目”，介词of同其后名词构成介词短语，修饰the number.当它作主语时，谓语动词用单数 。例： The number of students is about twenty. 学生的数目大约二十。 Many people took part in 10,000-metr

16、e race, but only a number of them kept on running to the end . 很多人参加了1万米赛跑，但是他们中只有一些人跑到了最后。,2. But today that number has dropped to a few thousand. a few thousand表示“几千”。当hundred, thousand前面是基数词one, two, threea few, many时，其后不加s。当hundred和thousand后面加s时，需要跟of修饰可数名词复数。例： There are three thousand students

17、 in our school. 我们学校有三千名学生。 Thousands of students are on the square. 成千上万的学生在广场上。,3. For this reason, tigers are important to the environment. be important to sb./sth. 对来说是重要的。 be important for sb./sth. 对于来说做是重要的。 例: Time is important to me.时间对我来说很重要。 It is important for you to get there early. 早点到那

18、儿对你来说很重要。,4. In recent years, tigers have been in danger of disappearing. in danger (of)意为“处于（）危险之中”。例： Youre in danger of catching a cold.你处于得感冒的危险中。 The sick man is in danger of death. 这个病人有死亡的危险。,5. As forests disappear, tigers lose their homes.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 fo

19、g disappeared. 随着太阳升起，雾消失了。 As she left the room, she remembered that book. 当她离开教室的时候，她想起了那本书。,根据提示完成句子,1. _ students is about twenty. (的数量) 2. Its _ your health. (对是重要的) 3. The river is polluted and _ going dry.(处于危险中),The number of,important to,in danger of,Exercises,4. _ time went by, she became

20、more and more beautiful. (随着) 5. _ the party, he gave me a gift. (在之初) 6. The temperature has _ below zero. (下降到) 7. It is at the bottom of the _. (食物链) 8. You know, computers bring troubles _. (也),As,At the beginning of,dropped to,food chain,as well,Summary,1. We should learn to protect the animals; 2. We learnt some useful words and expressions :century, courage, brave, reason, kill, cut, at the beginning of, drop to, food chain.,Create a poster about ways we can protect animals.,Homework,