人教版九年级Unit 13 We're trying to save the earth!-Section A 3a—3b-ppt课件-(含教案+视频+音频)-公开课-(编号：12688).zip

Section A 2 (3a-3b) Listen to the tape and answer my questions Where shark fin soup is popular Number of sharks caught and traded every year How governments can help Two environmental groups which are against “finning” southern China 70 million WildAid and the WWF Develop laws to stop the sale of shark fins WildAid和和WWF组织组织 WildAid（美国野生救援协会）是保护野（美国野生救援协会）是保护野 生动物及栖息地环境的一个非盈利性的机构生动物及栖息地环境的一个非盈利性的机构 ，1999年注册成立，其宗旨是保护及救助世年注册成立，其宗旨是保护及救助世 界范围内的野生动物；界范围内的野生动物；WWF（世界自然基（世界自然基 金会）英文全称为金会）英文全称为World Wide Fund for Nature，成立于，成立于1961年，是享有国际盛誉，年，是享有国际盛誉， 全球最大的独立性非政府环境保护组织之一。全球最大的独立性非政府环境保护组织之一。 Read the passage and judge the following sentences Read the first paragraph 1. Sharks fin（鱼鳍）（鱼鳍）soup is famous and expensive all around the world. 2. We have to kill a whole shark to get a bowl of sharks fin soup. Read the second paragraph 1. People cut off sharks fins and throw the sharks back into the ocean. 2. Sharks are in the bottom of the food chain in the oceans ecosystem. n. 生态系生态系 统统 食物食物 链链 Read the third paragraph 1. WildAid and the WWF are environmental protection groups in China. 2. Sharks fins are good for health. 1. A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。鲨鱼不能再游泳然后慢慢死掉。 no longer意思是意思是“不再不再” e.g. Im no longer a student. 我不再是个学生了。我不再是个学生了。 有两个短语和有两个短语和no longer同义，即同义，即 notany longer和和notany more，但他，但他 们侧重的方面不同。们侧重的方面不同。 no longer和和notany longer侧重时间。侧重时间。 e.g. He no longer lives here. = He doesnt live here any longer. 他不在这儿居住了。他不在这儿居住了。(一个时间以前他住一个时间以前他住 在这儿，过了这个时间，他就离开了。在这儿，过了这个时间，他就离开了。) notany more侧重程度和数量侧重程度和数量 e.g. You can drink no more. = You cant drink any more. 你不能再喝了。你不能再喝了。(喝酒的量到了一定程喝酒的量到了一定程 度，不能再继续下去了。度，不能再继续下去了。) 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。这种方法不但残忍而且对环境有害。 not onlybut also (1)用于连接两个表示并列关系的成分，用于连接两个表示并列关系的成分， 着重强调后者，其意为着重强调后者，其意为“不仅不仅而且而且 ”; 其中的其中的also有时可以省略。有时可以省略。 e.g. She not only plays well, but also writes music. 她不但很会演奏，而且还会作曲。她不但很会演奏，而且还会作曲。 （2） Not only but also 连接两个分连接两个分 句，并且句，并且not only 位于句首时，第一个分句位于句首时，第一个分句 中的主语和谓语要部分倒装。中的主语和谓语要部分倒装。 e.g. Not only does the sun give us light but also it gives us heat . be harmful to 对对有害有害 e.g. Smoking is harmful to the health. 吸烟有害健康。吸烟有害健康。 Playing computer games much is harmful to students. 电脑游戏玩太多对学生有害。电脑游戏玩太多对学生有害。 3. Sharks are at the top of the food chain in the oceans ecosystem. 鲨鱼位于海洋生物系统食物链的顶部。鲨鱼位于海洋生物系统食物链的顶部。 at the top of 在在最高地位最高地位; 用最高用最高最最 大大的的(速度速度, 声音等声音等) e.g. He shouted at the top of his voice in order that he might be heard. 他尽力大声叫喊他尽力大声叫喊, 以便别人能听见以便别人能听见 4. 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，会给所有如果它们的数目降至过低，会给所有 海洋生物带来危险。海洋生物带来危险。 此句复数形式的此句复数形式的numbers表达全海洋中鲨表达全海洋中鲨 鱼的总量。当表示数值的高或低时，鱼的总量。当表示数值的高或低时， number要用要用high或或low修饰。修饰。 e.g. 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在那个国家，城市儿童入学人数比乡镇 及农村要高。及农村要高。 常与常与number搭配的动词有搭配的动词有grow, fall等。等。 e.g. The number of families that own cars has been growing quickly recently. 近来拥有轿车的家庭数量增长很快。近来拥有轿车的家庭数量增长很快。 3b Read the passage again and fill in the blanks with the words in the box. so although if but when 1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will be in danger. when so 3. Many 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 fins are good for health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. but Although if adj. 科学上的，科学的科学上的，科学的 There are some animals are endangered. We should do something to protect the animals and the environment! Homework Write a composition call on people to protect animals Unit 13 were trying to save the earth! Section A (3a 3b) 一一 . .教学目标教学目标 1 .帮助学生了解鲨鱼所处的生活环境及所面临的问题。 2 .通过多媒体展示及其课件设计，让学生在愉悦的环境 下轻松的掌握本课时重要的语言知识点。 二二 . .教学内容教学内容 1. 读懂有关濒危生物鲨鱼的短文。 2 .总结短文中部分短语和知识点。 三三. . 教学重难点教学重难点 1.读懂有关濒危生物鲨鱼的短文 2.总结短文中部分短语和知识点。 四四 . .教学过程教学过程 StepStep 1 1：Greeting . StepStep 2 2：向学生展示一则公益广告，让学生通过广告内容 告诉大家广告主题，由广告主题引入今天新课。 StepStep 3 3：Sharks are at the top of the food chain in the oceans ecosystem .today we will learn the passage and learn about sharks . 让学生看课本内容听短文,掌握文章大意,回答 4 个问题. 1.Where shark fin soup is popular 2.Number of sharks caught and traded every year 3.How governments can help 4.Two environmental groups which are against “finning” StepStep 4 4 ：Sharks are endangered, read the passage and judge the sentences Read the first paragraph 1. Sharks fin（鱼鳍）soup is famous and expensive all around the world. 2.We have to kill a whole shark to get a bowl of sharks fin soup. Read the second paragraph 1 . People cut off sharks fins and throw the sharks back into the ocean 2 . Sharks are in the bottom of the food chain in the oceans ecosystem. Read the third paragraph 1 . WildAid and the WWF are environmental protection groups in China. 2 .Sharks fins are good for health. StepStep 5 5 ：和学生一起看课文内容,讲解短文里面语言知识 点. 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” e.g. Im no longer a student. 我不再是个学生了 有两个短语和 no longer 同义，即 notany longer 和 notany more，但他们侧重的方面不同。 no longer 和 notany longer 侧重时间。 e.g. He no longer lives here.= He doesnt live here any longer. 他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间， 他就离开了。) notany more 侧重程度和数量 e.g. You can drink no more. = You cant drink any more. 你不能再喝了。(喝酒的量到了一定程度，不能再继续下去 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。 not onlybut also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。 e.g. She not only plays well, but also writes music. 她不但很会演奏，而且还会作曲。 Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。 be harmful to 对有害 e.g. Smoking is harmful to the health. 吸烟有害健康。 Playing computer games much is harmful to students. 电脑游戏玩太多对学生有害。 3. Sharks are at the top of the food chain in the oceans ecosystem.鲨鱼位于海洋生物系统食物链的顶部。 At the top of 在最高地位; 用最高最大的(速度, 声音等) e.g. I looked at the top of his head, his hair shiny and parted smoothly. 我看他的头顶, 头发闪亮且平滑 的分开。 He shouted at the top of his voice in order that he might be heard.他尽力大声叫喊, 以便别人能听见。 4. 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。 e.g. 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。 常与 number 搭配的动词有 grow, fall 等。 e.g. The number of families that own cars has been growing quickly recently. 近来拥有轿车的家庭数量增长很 快。 StepStep 6 6 ：完成教学任务 3b 的内容 ,并和学生一起复习 so although if but when 用法. StepStep 7 7：Let students talk about the question :We know there are many animals are endangered ,What we should do ? We should do something to protect the animals and envionment . Save the earth ! save the animals ! StepStep 8 8：Homework Write a composition call on people to protect animals