九年级unit 13Section A 2 (2).ppt

1、The earth is badly polluted. What should we do to save the earth?,Warming up,close down plant more trees ,bring a bag clean up ,stop driving cars take buses ,Unit 13 Save the Sharks! Section A 2 3a-3b,There are some animals are endangered（濒临灭绝的）. We should do something to protect the animals and the

2、 environment!,Save the earth! Save the animals!,1. Have you ever seen a shark（鲨鱼）? 2. What do you know about sharks?,Discuss with your partner:,southern China,70 million,over 90 percent,WildAid and the WWF,3a,Read the passage about sharks and complete the fact sheet below.,3b,Read the passage again

3、and fill in the blanks with the words in the box.,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 st

4、rong 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,Sharks are endangered, re

5、ad 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.

6、 Sharks are in the bottom of the food chain in the oceans ecosystem.,Read the third paragraph,WildAid and the WWF are environmental protection groups in China.,2. Sharks fins are good for health.,Save the Sharks!,Many have_ shark fin soup, its popular and famous _, but do you know they kill a whole

7、shark for _fin soup. They _ the fins and throw the shark back into the ocean. Its not only_, but also _ the environment. Sharks are _ the food chain, but _ some sharks have fallen in these years. We believe they are _. So far, no _ have shown that shark fins _ health. So, why eat them? Help save the

8、 sharks!,heard of,in southern China,a bowl of,cut off,cruel,harmful to,at the top of,the numbers of,endangered,scientific studies,are good for,Retell the passage according to the words below.,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.

9、我不再是个学生了。,notany longer, notany more以及no more，和no longer同义，但他们侧重的方面不同。,Language points,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。(

10、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。,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

11、 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 also 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 be bad for 对.有坏处 be good for 对.有好处 e.g. Smoking is harmful to the health. 吸烟有害健康。 Playing computer games much is harmful t

12、o 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 在顶端 at the bottom of 在.底部,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h

13、igh或low修饰。,the number of .的数目，后接可数名词复数，谓语动词用单数； a number of 大量，许多，后接可数名词复数或代词，谓语动词通常用复数。,【典例】 -What the number of students in your school? -About two thousand. A number of from the countryside. A.is; are B. is; is C. are; is D. are; are,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) WildAi