1、课课题题 Unit 13 We are trying to save the earth!（第（第 2 课时）课时）教学批注教学批注 教教学学设设计计 一、教学三维目标一、教学三维目标 1.知识与技能： 1. 语言知识目标 基本词汇： shark, fin, cruel. harmful, be harmful to, at the top of, chain,the food chain, ecosystem, industry, law, scientific 基本词组：be harmful to, at the top(of sth.), no longer, the food chai
2、n, 基本句型：Were trying to save the earth! No scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标 能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句型。 2.教学方法：讲授法，交际法，直观法，讨论法等。 3.情感态度与价值观： 有环境危机意识，学会关注环境保护环境。 二、教学重点、难点二、教学重点、难点 1. 教学重点： （1）能正确运用现在进行时，现在完成时，被动语态，
3、情态动词和 used to 句 型。 （2）保护环境的措施方法。 2. 教学难点： 能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句型。 三、教学准备三、教学准备 多媒体教学设备 四、教学课时四、教学课时1 课时课时 五、教学过程五、教学过程 Period 2 SectionA2 (3a-3c) I. Revision. Ask students what kind of pollution they know. II. Lead in Teacher tells students the earth is badly polluted. And some anima
4、ls are also endangered.Ask students to look at some animals in the pictures. We should do something to protect the animals and the environment! III. Discussion (1) Have you ever seen a shark? (2) What do you know about sharks? IV. Reading Sharks are endangered, read the passage and judge the sentenc
5、es. Sharks fin（鱼鳍）soup is famous and expensive all around the world. We have to kill a whole shark to get a bowl of sharks fin soup. People cut off sharksfins and throw the sharks back into the ocean. Sharks are in the bottom of the food chain in the oceans ecosystem. WildAid and the WWF are environ
6、mental protection groups in China. Sharks fin s are good for health. Read the second paragraph and answer the following questions. 1.What do people do when they catch a shark? 2.What will happen to a shark if it doesnt have a fin? 3.If sharksnumber drop too low, what will it bring? 4.How many sharks
7、 are caught and traded every year? 5.How are the numbers of some kinds of sharks? Complete the fact sheet in 3a. Where shark fin soup is popular Number of sharks caught and traded every year How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups
8、which are against “finning” V. Practice (3b) 教教学学设设计计 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 fin soup. 2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans
9、 ecosystem will be in danger. 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 s
10、hark fins. VI. Language points 1.Ashark 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 lo
11、nger. 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
12、时可以省略。 e.g. 1) She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。 2) Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。 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。 e.g. Not only you but also he has to leave. 不只是你，他也得离开。 not only 放在句首，后接句子时要用倒装结构。 e.g. Not only had the poor man been fined, but al
13、so he had been sent to prison. 这个可怜的人不仅被罚款，而且还被送进了监狱。 be harmful to对 有害 e.g. Smoking is harmful to the health. 吸烟有损健康。 Playing computer games much is harmful to students. 教教学学设设计计 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
14、; 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, 头发光亮, 分得平滑。 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
15、复数形式的 number 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
16、. 近来拥有轿车的家庭数量增长很快。 5. Environment protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. 世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众 有关“猎翅”的行为。 1) 句中 fin 本为名词，指 “鱼鳍”。此句中的 finning 由动词化的 fin（割鲨鱼鳍 以获取鱼翅）的-ing 形式转化而成，指课文中所陈述的 “猎翅”这一行为。 2) WildAid 和 WWF 组织 WildAi
17、d（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， 1999 年注册成立， 其宗旨是保护及救助世界范围内的野生动物； WWF （世界自然基金会）英文全称为 World Wide Fund for Nature，成立于 1961 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。 VII. Homework What do you want to say to the people in southern China? Write a letter of saving sharks to them. 板书设计 Unit13 Were trying to save the earth! Section A(3a-3b) Sharks are in danger! Lets save the sharks!
