【正文】 protect the ocean from being polluted to provide good sea environment for all sea animals and mostly, for human beings.Suggested answers to Q2: Sa: I think it matters if many sharks are killed by people. Everyone knows that any species has its own position in nature, saying nothing of sharks, large and important animals. The amount of sharks will make great effect on the sea creature chain, while sea creature chain will affect the ocean, and the ocean will act on the climate straight, and as a result, on human beings. So I think animals, such as sharks, have a very close relation to people. Sb: Yes. It is reported that shark populations are decreasing at a serious rate because of modern fishing technology. On the other hand, with the deepwater condition getting worse by pollution and people’s killing, more and more species are being endangered. Sc: As far as I know, up to 200 million sharks are killed each year. This former huge family now has no longer held advantages. Their situation makes us worried. So I think government should make sure that the fishing of sharks is slowed down. Meanwhile, take matures to protect them.T: Very good job! I’m very glad。 while in the film it was very cruel and fierce and killed many people. But I don’t think the film tells the true stories of sharks. I always think if you don’t disturb the wild animals, they won’t attack you, either.Possible dialogue 2:Sa: How do you feel when you look at the photos?Sb: In the first and second one, they seem fine. They have a very good shape and they can swim very quickly.Sc: But in the third one it looks very frightening, just like the big shark in the film Jaws. It’s terrible. What do you think about them, A?Sa: Sometimes we may hear news that sharks attack people and this may frighten people very much. But people often pay less attention to the fact that many more sharks are killed by people every year and their amount in nature dropped down very quickly.Sb: Yes. People kill far more sharks than sharks do to people. And I know from some books that seldom do the wild animals attack human beings, if people won’t disturb them. So people should think seriously what they have done to sharks. For example, whether we’ve destroyed their surviving environment or whether too much fishing has broken their food chains.T: As we all know, sharks attack people. Now Let’s listen to the news reports on shark attacks. Number the places where these attacks happened in the order your hear them. Are you ready?Play the tape twice or more for the Ss to listen and finish Exx 23. After that, check the answers with them. Then let the Ss work in groups and discuss the questions in Ex 4.Suggested answers to Q1:Sa: Just now we heard some reports on shark attacks. As to whether people should hunt down and kill sharks, I think that depends on the case. If the shark kills people, like the one in the film Jaws, it should be killed in order to save people’s lives. But we mustn’t kill those that never attack people because not all sharks might hurt people. We can’t kill the whole family just because one of them killed a person.Sb: I agree. Shark attacks just happen once in a while. In fact, the chances of being bitten by a shark are actually very small. Compared to what people have done to sharks, they are innocent. Imagine that if human beings hadn’t disturbed their circumstance or destroyed their food chain or polluted sea water and so on, would that kinds of things happen so often?Sc: Yes. We human beings must reflect on ourselves whether we leave enough space for sea animals, like sharks, to survive in nature. If we want too much from the sea, we must be punished, by animals, by nature or in some other ways. On the other hand, people can take measures to avoid this. For example, not to swim too close to their habitats, leave them enough space。 witness whales in their natural environment as they leap out of water and feed in our waters。 we must try to protect them, especially those endangered. It is reported that many whales kill themselves for some unknown reasons on some beaches every year. Maybe that is caused by pollution. In a word, man has done much harm to whales. It’s time for us humans to do something to protect them. No more whaling!T: Yes, no more whaling! I agree with you very much! I hope you can get more information about whales after class to learn more about their current situation. Step Ⅱ Language studyDeal with the useful words and expressions in this unit and let the Ss do some exercises to master their meanings and usages. T: Turn to Pages 22, please finish Exx 1 3.When the Ss have finished that, check the answers with the whole class. T: Now, we’ll revise some useful structures.As the teacher explains the grammar, he / she will show the slides at proper time.Step Ⅲ Practice (Workbook exercises)Let the Ss finish the exercises in USING WORDS AND EXPRESSIONS on Page 63 to further practice the use of some key words and expressions. Then let them finish the exercises in USING STRUCTURES. After students have finished, show some students’ work on the projector, check their work with the whole class. Correct the errors if there are any.This structure is used after prepositions and verbs normally followed by ing form. So the teacher can help the Ss summarize the verbs or phrasal verbs followed by ing form.Step Ⅳ HomeworkHomework for today:1. Revise the grammar and language points.2. Write five sentences with “being done” structure as different ponents of a sentence.The Third Period ListeningTeaching goals 教學(xué)目標(biāo)1. Target language目標(biāo)語言重點(diǎn)詞匯和短語opportunity, annual, migration, Antarctic, whale watching tour, witness, awesome, leap out of, seal, refund, pensioner, shark attack2. Ability goals能力目標(biāo)Enable the Ss to listen to three dialogues about a tour they have read in the advertisement and an interview of a shark expert to answer the questions given.3. Learni