九年级unit13SectionA2课件

1、Section A 23a-3bJason and Susan, what are your ideas for solving these problems?Role-play 2d.Well, to cut down air pollution, we should take the bus or subway instead of driving.Yeah, or ride a bike. There are other advantages of bike riding. Its good for health and it doesnt cost anything. Great id

2、eas! What about waste pollution?Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago.Me, too. Also, I never take wooden chopsticks or plastic forks when I buy takeaway food. I use the ones at home.And remember to throw rubbish in the bins and keep p

3、ublic places clean and beautiful for everyone.So together, our actions can make a difference and lead to a better future!Translate these sentences into English.1. 甚至是河底都满是垃圾。甚至是河底都满是垃圾。2. 这个镇上的每个人都应该参与清扫。这个镇上的每个人都应该参与清扫。Even the bottom of the river was full of rubbish.Everyone in this town should pl

4、ay a part in cleaning it up. 3. 骑自行车有其它的优点。骑自行车有其它的优点。4. 我买外卖食品从来不拿木筷子和塑料叉我买外卖食品从来不拿木筷子和塑料叉 子。子。There are other advantages of bike riding.I never take wooden chopsticks or plasticforks when I buy takeaway food. The earth is badly polluted.What should we do to save the earth?Lets take action (采取行动采取行

5、动)Turn off the lights when you leave a room.Recycle books and paper. Take buses instead of driving cars.There are some animals are endangered. We should do something to protect the animals and the environment! The zoos provide homes for many endangered animals. 1. Have you ever seen a shark（鲨鱼）（鲨鱼）?

6、2. What do you know about sharks?Sharks are endangered, read the passage and judge the sentences.Read the first paragraph1. 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 paragraph1. People cut off

7、 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. 生态系统生态系统食物链食物链Read the third paragraph1. WildAid and the WWF are environmental protection groups in China.2. Sharks fins are good for health.Where shark fin soup is popularN

8、umber of sharks caughtand traded every yearHow much the numbers of some kinds of sharks have fallen in the last 20 to 30yearsTwo environmental groups which are against “finning”southern China70 millionover 90 percent WildAid and the WWF3aRead the passage about sharks and complete the fact sheet belo

9、w.3bRead the passage again and fill in the blanks with the words in the box.so although if but when1. 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 d

10、anger.whenso3. 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.butAlthoug

11、hifadj. 科学上的，科学的科学上的，科学的Retell the passage according to the words below.shark fin soup in southern China each time cut off no longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent WildAid and the WWF develop laws scientific studies 1. A shark

12、 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

13、 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

14、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用于连接两个表示并列关系的成分，着用于连接两个表示并列关系的成分，着重强调后者，其意为重强调后者，其意为“不仅不仅而而且且”; 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。 Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。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

15、谓语通常与靠近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。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。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放在句首，后接句子时要用倒装结构。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，而且还被这个可怜的人不仅被罚款，而且还被 送进了监狱。送进了监狱。 be harmful to 对对有害有害e.

16、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. I looked a

17、t the top of his head, his hair shiny and parted smoothly. 我看他的头顶我看他的头顶, 头发闪亮且平滑的分头发闪亮且平滑的分 开。开。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

18、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。5. Environment protection groups around the world, s