九年级英语全册《Unit 13 We’re trying to save the earth（第2课时）》教案 （新版）人教新目标版-（新版）人教新目标版初中九年级全册英语教案.doc

Unit 13 We’re trying to save the earth!
Section A 3a—3c
一、【教材分析】

教
学
目
标

知识
目标
1.学习并掌握新词汇：
shark, fin, method, cruel, cut off, harmful, chain, ecosystem, low, industry, law, environment,
environmental, scientific
2. 学会并正确使用以下常用表达：
hear of, cut off, throw…into, no longer, not only…but also, be harmful to, at the top of the food chain, the sale of… ,ask sb. to do sth., so far, be good for, be against, in danger
3. 学会使用以下句型：
（1） Do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup?
（2）When people catch sharks, they cut off their fins and throw the shark back into the ocean.
（3）This method is not only cruel, but also harmful to the environment.
（4）The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
（5）They have even asked governments to develop laws to stop the sale of shark’s fins.
能力
目标

通过文段阅读，提高阅读理解能力。
情感
目标

了解环境污染的坏处，树立环保意识。
教学重点
会用重点词汇和句型。
教学难点
语言知识点的运用。
教学方法
情境教学法；任务型教学法
二、【教学流程】
环节
师生活动
二次备课

I. 复习
热身
1、检查生词预习。
（1）先通过PPT呈现本课的单词，教师领读，学生跟读，并帮助学生正音。
（2）做题巩固。根据句意和首字母提示写出所缺的单词。
①This method is not only c_______, but also harmful to the environment.
②Sharks are at the top of the food chain in the ocean’s e_______.
③But in fact, around 70 million sharks are caught and traded in this i_______ every year.
④Many have heard of shark’s f_______ soup.
⑤If their numbers drop too low, it will bring d_______to all ocean life.
答案：①cruel②ecosystem③industry④fin⑤danger
2、自由交谈。
T: The earth is badly polluted. What should we do to save the earth?
S1: Take buses instead of driving cars.
S2: Turn off the lights when you leave a room.
S3: Recycle books and paper.

Ⅱ.感知
体验

感知1.PPT展示下列图片。创设情景：There are some animals are endangered. We should do something to protect the animals and the environment!

体验1. 分组谈论如何保护濒危动物。The zoos provide homes for many endangered animals.
感知2.PPT展示屠杀鲸鱼图片，创设问题情境：
Have you ever seen a shark? What do you know about sharks?

体验2. 同学之间阅读文章并谈论找出答案。

Ⅲ.强化
巩固

1. 处理教材3a的内容。
Where shark fin soup is popular
 southern China

Number of sharks caught and traded every year
 70 million

How much the numbers of some kinds of sharks have fallen in the last 20 to 30years
 over 90 percent
Two environmental groups which are against “finning”
 Wild Aid and the
WWF

2.处理教材3b的内容。
Read the passage and fill in the blanks with the words in the box.
① Many people do not realize they are killing a whole shark _______ they enjoy a bowl of shark’s fin soup.
②Sharks are at the top of the food chain, ______ if their numbers drop, the ocean’s ecosystem will be in danger.
③Many think that sharks are too strong to be endangered, _______they are wrong.
④_______there are no scientific studies to support this, a lot of
people believe that shark’s fins are good for health.
⑤Sharks may disappear one day______ we do not do something
to stop the sale of shark’s fins.
答案：①when ②so ③but ④Although⑤if
3. 语言知识点的归纳整理。
（1）A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。
no longer意思是“不再”
► I’m no longer a student. 我不再是个学生了。
（2）This method is not only cruel, but also harmful to the environment. 这种方法不但残忍而且对环境有害。
·用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;其中的also有时可以省略。
► She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。
·若连接两个成分作主语，其谓语通常与靠近的主语保持一致。如: Not only you but also he has to leave. 不只是你，他也得离开。 若连接两个句子，not only后面的句子要用倒装。
► Not only did he speak more correctly, but he spoke more easily. 他不仅说得更正确，而且讲得更不费劲了。
（3）If their numbers drop too low, it will bring danger to all ocean life. 如果它们的数目降至过低，会给所有海洋生物带来危险。
此句复数形式的numbers表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。
► In that country, the number of children going to school is higher in cities than in towns and village. 在那个国家，城市儿童入学人数比乡镇及农村要高。

Ⅳ.实践
应用
写出保护濒临动物的几项措施：
1. Don’t kill them and destroy their homes.
2. Plant more trees.
3. Develop laws to protect them.

Ⅴ.总结
反馈
1.结合板书和课件，让学生盘点所学词汇和句型。
词汇：shark, fin, method, cruel, cut off, harmful, chain, ecosystem, low,
hear of, cut off, throw…into, no longer, not only…but also, be harmful to, at the top of the food chain, the sale of… ,ask sb. to do sth., so far, be good for, be against, in danger
句型：
（1） Do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup?
（2）When people catch sharks, they cut off their fins and throw the shark back into the ocean.
（3）This method is not only cruel, but also harmful to the environment.
（4）The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
（5）They have even asked governments to develop laws to stop the sale of shark’s fins.
2. 当堂练习。
单项选择。
（1）Many have _________ shark’s fin soup.
A. heard of B. hear of C. hearing of D. heard from
（2）But do you realize that you’re killing a whole shark ______ you enjoy a bowl of shark’s fin soup?
A. if B. when C. but D. although
（3）When people catch sharks, they _______ their fins
A. cut down B. cut in C. cut off D. cut up
（4）Without a fin, a shark can________ swim and slowly dies.
A. not any more B. not any longer
C. not longer D. no longer
（5）Sharks are at the top of the food chain, _______ if their numbers drop, the ocean’s ecosystem will be in danger.
A. but B. although C. so D. when
答案：（1）A（2）B（3）C（4）D（5）C

Ⅵ.作业
布置
1. Review the new words and expressions you’ve learned today.
2. Read and recite the passage.
3. Preview the new words and expressions.
4. Preview the Grammar Focus.

三、【板书设计】
Unit 13 We’re trying to save the earth!
Section A 3a—3c
cut off, throw…into, no longer, not only…but also, be harmful to, at the top of the food chain, the sale of… ,ask sb. to do sth., so far, be good for, be against, in danger

四、【教学反思】