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1、Unit 13 Were trying to save the earth,第一课时 (Section A 3a-3b),【课前准备】 1.想一想，说一说Do you like animals? How do you help save the endangered animals? _ 2.自学自查：根据句意及汉语提示完成单词。 1). Carl is planning to travel by ship because he wants to see the _ (沙鱼）in the sea. 2). You should teach them the _ (方法）of how to gr
2、ow apples instead of giving them apples. 3). Its _ (有害的)to throw the old battery in the water. 4). Many countries have made _（法律）to keep the animals. 5). If the animals are endangered , it may broke the_ (生态系统）of the world.,情境引入 Leading-in,【导学过程】 Step 1交流预习结果&情景导入 (Do you like animals? How do you he
3、lp save the endangered animals?) Students: _. 思考：What do you know about sharks? What do you think might cause a fall in the number of sharks?,活动探究,Fast-reading Now turn to page 99 and read the page quickly to answer the questions.,二：读中活动 仔细阅读3a文章，回答问题。 a.阅读第一段，Q1：What is especially popular in southe
4、rn China? Q2: What do you realize when you enjoy a bow of shark fin soup? _ b.阅读第二段，Q1：What is the cruel method? Q2:What will happen if their numbers drops too low? _ c.阅读第三段，Q1:Write down two environmental groups against “finning”. Q2：Are shark fins good for health? _,Fast-reading read the text aga
5、in to find answers to the sheet.,Southern China,70 million,over 90 percent,WildAid and the WWF,三：读后活动,1.用自己的话复述根短文内容。 2根据对课文的理解，完成下面填空练习。 Some people like to eat sharks fin soup, especially in _ China. But getting the sharks fin is very _. When people catch sharks, they _ _their fins and throw them
6、into the ocean. The shark slowly dies because it cant _without a fin. And it is also _to the environment. Sharks are at the _of the food chain. If the number of sharks drop too low, it will break the balance of the nature. Please say no to eating shark fin soup, and take action to save the sharks!,c
7、areful-reading Read the passage again and fill in blanks.Using the following words so, although, if but, when, Many people do not realize they are killing a whole shark _ they enjoy a bowl of sharks fin soup. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will
8、 be in danger.,so,when, Many think that sharks are too strong to be endangered, _ they are wrong. _ there are no scienfitic studies to support this, a lot of people believe that sharks fins are good for health. Sharks may disappear one day _ we do not do something to stop the sale of sharks fins.,bu
9、t,Although,if,延伸拓展 合作探究,Studying useful words and expressions. 1.This method is not only cruel, but also harmful to the environment.这种方法不仅残酷，而且对环境有害。 【解析】 1).not onlybut also意为_, 用于连接两个表示并列关系的成分，着重强调后者，其中的_有时可以省略。 2). harmful 形容词，意为“有害的”, 常构成短be harmful to“对有害的=do harm to Reading in the sun does har
10、m to our eyes. = Reading in the sun _ _ _ our eyes.,2.Without a fin, a shark can no longer swim and slowly dies. 没有鱼鳍，鲨鱼不再会游泳并且慢慢死去。 【解析】No longer意思是“不再”，其确切含意为某状态在某个时刻之后不再继续下去了。所以，当你从学校毕业了，就可以说：Im_ _ a student.我不再是个学生了。 3.The numbers of some kinds of sharks have fallen by over 90 percent in the las
11、t 20 to 30 years. 在过去的二三十年里，一些种类的鲨鱼的数量下降超过90%。 【解析】其中 the number of 的意思是_,我们还学习过 a number of 其意思是_,表示“许多”相当于many，修饰可数名词复数形式。,4. play a part in扮演某角色; 与有关，对有影响 Id like to play a part in their discussion. 我愿意参与他们的讨论。 Education is playing a big part in environmental protection. 教育在环境保护中起着很大作用。 He played
12、 a part in his favorite TV show. 他在他最喜欢的电视节目中扮演了一个角色。,【当堂检测】 1.-Look! _ boys are playing on the playground. -Yes. _ them is about 200. A. The number of; A number of B. The number of; The number of C. A number of; the number of D. A number of; A number of 2. This is my twin sister, Lucy. Not only she
13、 but also I _ good at drawing. A. is B. am C. are D. was 3. 汤姆嘲笑那个小男孩是很残忍的事。 It was _ _Tom to _ _that little boy. 4. 你不戴眼镜能看清东西么？ Can you see _ your glasses? 5. 不仅学生们被邀请，而且那位老师也被邀请了。 Not only the students but also the teacher _ invited. 6. 吸烟对健康有害。 Smoking is _ _ to ones health.,【课后反思】,1.本节课你掌握到了哪些重点句式？ 2.通过本节课的学习我最大的收获是什么？ 3. 感到自己有待加强的是什么？,小结与作业,1. Look back on what we have learned in this lesson. 2. Homework: make a conversation with your parnter about what you can do to reduce pollution.,
