1、Lesson 17 Save the Tigers一、教学目标1. 在整体理解的基础上要求学生能够听、说、认读单词: volunteer, the number of, drop, inbalance, in danger of, cut down,2. 理解课文内容。3. 了解怎样为什么要保护动物。4. 知道保护动物的重要性。二、教学重难点1. 正确运用本课的短语。2. 了解怎样为什么要保护动物。3. 知道保护动物的重要性。三、课前准备教学 ppt.四、教学过程Step 1 复习巩固、激情导入1. Have you _(hear) about the ship accident?2. Apr
2、il _(fool) Day is meant to be fun for everyone.3. We should learn _ _ _(保护我们自己).4. Dont _ _(指着) my nose. Its not polite.5. There is a woman _ _(找) you.6. We learned to make model plane _ TV. A. in B. on the C. on D. of7. I have heard _ the music. But I havent _ it.A. of; heard B. about; listened to
3、C. of; listened D. from; listened to8. The thief _ (escape) last night.9. Even Tonys granddaughter, a five-year-old girl, asked him _ smoking.A. give upB. gave upC. to give upD. giving up10. Dad, why must I stop _ computer games? For your health, my boy.导入： Do you know how many tigers left in the wo
4、rld?Step 2 出示目标、明确任务1. 牢记本课黑体词汇：volunteer, the number of, drop, in balance, in danger of, cut down.2. 熟读课文，把握其意。3. 背诵重点句子，并灵活运用相关知识点。词组：a group of volunteers, a few thousand, symbols of strength and courage, thenumber of other wild animals, in danger of disappearing, as well句子：At the beginning of th
5、e 20th century, the number of tigers in the wild wasaround100000.In many stories, they are brave.It helps keep the number of other wild animals in balance.In recent years, tigers have been in danger of disappearing.As forests disappear, tigers lose their homes.The number of tigers in the wild is qui
6、ckly decreasing.Step 3 自主学习、合作探究 “Save the tigers” is a group of volunteers. “挽救老虎”是一群志愿者。(教材第 42 页)save the tigers 意为“挽救老虎”。save 此处用作及物动词，意为“救，救助”，后接名词或代词作宾语。save ones life 意为“挽救某人的生命”。He _ the boys life. 他救了那个男孩的命。【拓展】save 还可意为“储蓄，储存”。He _ a lot of money _ a computer.他为了买电脑存了很多钱。save 还可意为“节省，节约”。P
7、lease _. 请节约用水。At the beginning of the 20th century, the number of tigers in the wild was around100000. 在 20 世纪初野生老虎的数量大约是 10 万。(教材第 42 页)at the beginning of 意为“在初”。_, I found _ hard _English. 在这学期初，我发现学习英语很难。【拓展】from beginning to end 意为“从头到尾”。I have read this book _. 我从头到尾读了这本书。century 可数名词，意为“世纪，百
8、年”。 其复数为 centuries。“in the +序数词+century”表示“在某世纪”。We are living _. 我们生活在 21 世纪。【拓展】“in the +年代+of+the+序数词+century” 或 “in+the+年份+s/s”表示“在某世纪某一年代”。He was born _.= He was born _. 他出生于 20 世纪 90 年代。But today that number has dropped to a few thousand. 但是现在老虎的数量下降到几千。(教材第 42 页)drop to 意为“下降到；跌至”。The tempera
9、ture _ three below zero. 气温会降到零下三度。In many stories, they are brave. 在许多故事中，他们是勇敢的。(教材第 42 页)brave 形容词，意为“勇敢的”。其副词形式为 bravely, 意为“勇敢地”。_ the soldiers are! 士兵们多勇敢啊！He _ went into the burning house to save the baby.他勇敢地冲进那所正在燃烧的房子去救那个婴儿。It helps keep the number of other wild animals in balance.它帮助保持其他野
10、生动物的数量平衡。(教材第 42 页)keep in balance 意为“保持的平衡”。The boy _ the seesaw _.这个男孩儿让跷跷板保持平衡。【拓展】keep/lose ones balance 意为“保持/失去平衡”。I _ and fell. 我身体失去平衡，摔了一跤。eat a balanced diet 意为“均衡饮食”。Its important _. 均衡饮食是重要的。For this reason, tigers are important to the environment.因为这个原因，老虎对环境很重要。(教材第 42 页)be important t
11、o 意为“对很重要”。Money _ me. 钱对我很重要。【拓展】important 是形容词 important 的名词形式，意为“重要性”。Step4 , task任务一：限时 5 分钟，熟读所有词汇，牢记黑体词汇 。任务二：熟读课文，把握其意，画出不理解处，同桌之间交流。任务三：背诵重点句子，并自学知识点，画出不理解处，同桌之间交流。Step5, 课堂检测：根据提示完成单词1. His parents were born in the eighties of the 20th c_.2. I hadnt the c_ to destroy the letter.3. We k_ tim
12、e by watching TV during the night.4. He didnt tell us the r_ for being late.5. Wang Liang was b_ and clever and we liked his character.用所给词的适当形式填空1. Can you give me a _(reason) excuse for it?2. People hate the _(kill) who killed the baby.3. He goes there _(enjoy) the fresh air.4. The number of the people in our company _(be) more than 50.5. We both hope _(see) each other next timeStep6, homework1.Review Lesson 17.2. Write a short passage about how to protect animals.
