1、Unit 13 We are trying to save the earth!Section A (3a-3c)學習目標1.掌握重點生詞、短語、句子。生詞：cruel, industry, law, scientific, reusable短語：be harmful to, take part in, afford to do sth.,turn off, pay for, at the top of, take action句子：1. Were trying to save the earth! 2. But it used to be so clean! 2. 熟練運用現(xiàn)在進行時、use

2、d to do結構、被動語態(tài)以 及現(xiàn)在完成時。 3. 樹立保護鯊魚、尊重自然的意識。新課導入Free talkShare your passage about how to protect our environment.新課導入示例 Its our duty to protect the earth. In order to protect our environment, we should turn off the lights when we leave a room. Besides, wed better stop driving cars. We can go to school

3、 by bike or by bus. Last, it takes a long time for trees to grow up. So we should recycle books and paper. Our actions can make a difference. Lets do it together!新課導入What do you know about sharks? Tell us some information. 鯊魚新課導入Do you think sharks can be endangered? Why?新課導入 Fast readingRead the pa

4、ssage and match the main idea with each paragraph.Talk about shark fin soup.Sharks are endangered now.Call on people against eating shark fins.Para. 3Para. 1Para. 2新課講解 新課講解Talk about shark fin soup.Sharks are endangered now.Call on people against eating shark fins.Para. 3Para. 1Para. 2新課講解True (T)

5、or false (F). (Para. 2)Without a fin, a shark can no longer swim and dies. Sharks are at the top of the food chain in the oceans ecosystem.Around 50 million sharks are caught and traded in this industry every year. TTFTask 1Caregul readingT新課講解4. The numbers of some kinds of sharks have fallen by mo

6、re than 90 percent in the last 20 to 30 years. True (T) or false (F). (Para. 3)1. WildAid and the WWF are environmental protection groups in Europe.TFTF新課講解Listen to the passage about sharks and complete the factsheet below.Task 2Where shark fin soup is popularNumber of sharks caught and traded ever

7、y yearHow governments can help Two environmental groups against “finning”southern Chinaabout 70 milliondevelop laws to stop the sale of shark finsWildAid and the WWF新課講解3b1. 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 th

8、e food chain, _ if their numbers drop, the oceans ecosystem will be in danger.so although if but whenwhenTask 3Read the passage again and fill in the blanks with the words in the box.whenso新課講解3. Many think that sharks are too strong to be endangered, _ they are wrong.4. _ there are no scientific st

9、udies 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.so although if but whenbutAlthoughif新課講解殘忍的有害的在頂端鏈條生態(tài)系統(tǒng)工業(yè)；行業(yè)野生救援協(xié)會世界自然基金會法律科學上的新課講解Retell the passage according to the structure

10、below.新課講解Language points1. hear of sb./sth.聽說某人/某事的情況，表示間接聽到。Lucy has never heard of her brother since he left.自從哥哥離開后，露西再也沒有聽到過他的消息。2. be harmful to對有害。相當于do harm to/be bad for。Eating too much fast food is harmful to our health.吃太多快餐對我們的健康有害。3. at the top of在頂部/頂端。反義短語為at the bottom of“在的底部”。He wa

11、s standing at the top of the stairs. 他站在樓梯頂端。當堂小練一、 根據(jù)句意及漢語提示填寫單詞1. No one is _（反對）him.2. Keeping the animals in the zoo is very _（殘酷的）.3. _ （鯊魚）are very smart animals.4. Our government has made _（法律）to stop driving after drinking.5. In our class, fifty _ （百分之）of students go to school by bike.against cruelSharks laws percent當堂小練二、根據(jù)句意，用括號中所給詞的適當形式填空6. Hainan is in the _ (south) part of China.7. We all support his _ (science) research.8. This is an _(danger) animal. We should try to save it.9. Smoking is _(harm)to your health. You must give it up.10. At present th