人教版九年级全册Unit 13We're trying to save the earth! Lesson 2　Section A (3a－4c) 导学案（含部分答案）

Lesson 2　Section A (3a－4c)
课前预习
　　请预习下列重点单词、短语和句子，并完成下面的表格及相关训练。
单词和短语
　　
重点 单词 名词 1. 鲨鱼 shark　　　　　　　　　　　2. (鱼)鳍 fin 3. 链子；链条 chain 4. 生态系统 ecosystem 5. 工业；行业 industry 6. 法律；法规 law (n.)律师 lawyer 7. 运输业；交通运输 transportation (v.)运输；运送 transport
动词 8. 承担得起(后果)；买得起 afford　 (短语)承担得起做某事 afford to do sth.
形容词 9. 残酷的；残忍的 cruel　 10. 有害的 harmful　　　　　　　　　　 (v. & n．)伤害；损害 harm 11. 科学上的；科学的 scientific (n.)科学 science 12. 可重复使用的；可再次使用的 reusable (v.)重复使用；再次使用 reuse
重点 短语 1. 对……有害 be harmful to ...　　　　　　　　　2. 在……顶部或顶端 at the top of ... 3. 食物链 the food chain 4. 参加 take part in 5. 关掉 turn off 6. 付费；付出代价 pay for 7. 采取行动 take action 8. 听说 hear of 9. 切除；切下 cut off 10. 不再 no longer 11. 处于危险中 in danger 12. 合计；加起来 add up
根据语境或提示，完成填空。
1. It is cruel (残忍的) to cut off the sharks' fins and make them into soup.
2. Jackie Chan entered the film industry (行业) in the 1970s when he was in his twenties.
3. It is harmful to your teeth if you eat too much sugar.
4. I couldn't afford to buy the dress. It's too expensive.
5. China has made great progress in scientific research in the past 20 years.
6. According to the traffic law， children under 18 mustn't drive a car on the road.
7. In order to protect the environment, people in this country have to pay for their litter.
8. Many animals are endangered, so we should take action to save them now.
佳句仿写
请在教材中标出下面的句子，并用句中黑体词或短语仿写句子。
1. This is not only cruel, but also harmful to the environment.
2. Without a fin, a shark can no longer swim and slowly dies.
3. Sharks are at the top of the food chain in the ocean's ecosystem.
4．But in fact, around 70 million sharks are caught and traded in this industry every year.
句子仿写
她不仅是一名作家，而且还是一名演员。
She's not only a writer but also an actress.
我不会再寻求她的帮助了。
I will no longer ask her for help.
他站在山顶上，深吸了一口气。
He stood at the top of the mountain and took a deep breath.
事实上，我们真的很累，想休息一下。
In fact, we are really tired and want to have a rest.
基础练习
课文回顾
请根据课本中3a的内容，完成短文填空。
　　Many people have heard of shark fin soup. But do you 1. realize that you are killing a whole shark each time you enjoy a bowl of sharp fin soup When people catch sharks, they cut off 2. their fins and throw the sharks back into the ocean. This is not only cruel, 3. but also harmful to the environment. Sharks are the 4. top of the food chain in the ocean's ecosystem. If their numbers drop too low, it will bring 5. danger to all ocean life. The numbers of some kinds of sharks have 6. fallen by over 90 percent in the last 20 to 30 years. Environmental protection groups are teaching the 7. public about “finning”. They have asked governments to develop laws to stop the 8. sale of shark fins. So far, no 9. scientific studies have shown that shark fins are good for health, so stop eating them. Help 10. save the sharks!
知识探究
知识点
　This is not only cruel, but also harmful to the environment.
【自主探究】　harmful作形容词，意为“有害的”，be harmful to ... 意为“对……有害”。
★harmful的名词形式是harm，意为“伤害；损害”，be harmful to＝do harm to。如：
Smoking is harmful to your health. ＝Smoking does harm to your health.
【习题演练】
( )1. —Tom, playing games on the phone your eyes.
—I see. Thank you. I will do more sports instead.
A. is good for　　　　B. is harmful to　　　　
C. is sorry for　　　　D. is strict with
2. 吃太多的肉对你的健康有害。
Eating too much meat is harmful/does harm to your health.
提能训练
一、单项填空
( )1. I like J. K. Rowling's novels very much. So far I all her works about Harry Potter.
A. will read B. am reading
C. was reading D. have read
( )2. my father I am crazy about the football match, so neither of us want to miss the match tonight.
A. Both; and B. Either; or
C. Not only; but also D. Neither; nor
( )3. Our country develops really fast.
—Yes. ， it has made great achievements in many areas.
A. In the end B. From now on
C. As a result D. In fact
( )4. —Hey, take care not to the leaves of these plants.
—Sorry, I'll be careful.
A. take off B. cut off
C. turn off D. put off
( )5. number of the volunteers in our school 300 and two thirds of them are men teachers.
A. A; is B. The; is
C. A; are D. The; are
二、完成句子
1. 熬夜对你的健康有害。
Staying up too late is harmful to/does harm to your health.
2. 我们在山顶野餐怎么样？
How about having a picnic at the top of the hill
3. 他将为自己所做的一切付出代价。
He'll have to pay for what he has done.
4. 许多国家已经采取行动保护濒危的野生动物了。
Many countries have already taken action to protect the wild animals in danger.
5. 目前我们还没有任何发现，但是我们仍在研究。
So far we haven't been able to find anything, but we're still researching.
三、短文填空
　　Our life has changed a lot. Nowadays, we can easily 1. order a meal online. Then someone will bring the food with takeout boxes to us. This really can 2. save us much time and energy. But have you considered 3. what will happen to your takeout boxes
　　After all, plastic products are really 4. harmful to the environment. Most juice and water come in plastic bottles. When 5. a plastic bottle becomes rubbish, it remains rubbish for hundreds of years. That's 6. because plastic would not change much as it gets old.
　　How can we deal with plastic Recycle! We can take things that have been used and turn them 7. into something new.
　　Here is how it works. People save their plastic bottles. A special recycling truck picks the plastic bottles and takes 8. them to the recycling center, and the bottles are changed into small pieces there. Then the small pieces of plastic are melted(熔化) down. The melted plastic is sent to a factory. At the 9. factory， the old plastic is made into something new. It may become a new bottle, a backpack or even a slide(滑梯)! Recycling is one way all people, young and old, can 10. make a big difference! Let's take action now!