Unit 3 Sea explorationUsing language 1ppt课件（含音视频素材）-（2022新）人教版高中英语高二选择性必修第四册.rar

UNIT 3 UNIT 3 SEA EXPLORATIONSEA EXPLORATIONUsing language 1Using language 1Get to know about whales Get to know about whales and other sea animalsand other sea animalsTo know about whales and other animals.To learn how to listen for sequence.To use proper expressions to talk about what happened.parrotfishcoral reefsea-starturtleeel 鳝; 鳗 sharkHave you seen plants and animals that live under the sea? Where did you see them? How much do you know about whales?Could you complete the fun facts about whales? 1. Whales can hold their breaths for at least _ minutes.2. The _ whale is the largest known creature to ever inhabit the planet.3. Humpback whales sing _ songs.4. There are _ types of whales.5. Whales _ sleep.20 bluecomplextwo dontRead the poster on page 30, describe the picture.The photo is of a 26-meter blue whale approaching a whale watching boat in Monterey Bay, California. 1. What aspect of the camp would you like best? I would like the opportunity to see the whales close up best.2. Do you think it is important to carry out research on whales and other sea creatures? This research helps us learn more about the wonderful world we live in, and it also helps us learn more about these amazing creatures so that we can better protect them.Listen to the head researcher talking to the campers at the end of the day. What three things were the campers asked to do?Listen for sequenceWhen people talk about a series of actions or events happening in sequence of time, they often use certain words and phrases, such as first, next, then, after that, later, and finally.1. _2. _ 3. _ _to find out some facts for a whale profile to think about why they do whale researchto go out with and write a report of the work they doListen to Lukes part of the conversation again. Number the following sentences in the correct order. After that, we gave the group of whales a name, and each member a number. They will be added to the directory so we can identify them in the future. Most whales have slightly different fins and marks, which can help us to tell them apart. Meanwhile, we also noted their location, so we can track their movements and plot their migration path. Then we took pictures of their fins. Finally, we contacted other whale research groups around the world to share the information with them. First, we followed a group of whales with the boat. Later, we created a database of their fins and locations.12345678n.目录;名录n.迁徙Listen to the conversation again and answer the questions. Look at the questions and circle the key words.1. How many species of whales are there?2. What is the criterion to divide the main types of whales?3. What do whales use sounds for?4. Why do the campers take pictures of the whales fins?5. Why do they contact other research groups?1. How many species of whales are there? Over 80.2. What is the criterion to divide the main types of whales? The criterion is whether they have teeth or not.3. What do whales use sounds for? They use sounds to communicate and hunt.4. Why do the campers take pictures of the whales fins? This can help them to tell the whales apart.5. Why do they contact other research groups? They want to share information with them.Complete the mind map and talk about whales.Whalesover 80 speciesWhaleswith teethWhaleswithout teethfoodspeciesfoodtypical species fish, sea animals 70 small organisms blue whale length weight 100feet 200tonsSome of the students could not make it to the camp. Imagine you were there. Tell your partner about what happened, using the expressions in the box below. Your partner can also ask questions to find out more about what happened.A: Today we learnt about whales and whale research. First, we found some information and facts about whales. We used the library and the Internet.B: What did you do after that?First(ly), Second(ly), . Third(ly), . First of all. Then/After that/Afterwards/Next/Later onIn the end/At last, . At that time.It began when. Meanwhile Later FinallyExpressing sequence adv.与此同时A: Today we learnt about whales and whale research. First, we found some information and facts about whales. We used the library and the Internet.B: What did you do after that?A: Well, after that we thought about why we do whale research.B: But why do we do whale research?A: There are lots of reasons. First of all, we need to know how many whales there are. Then, we need to know where they go. And finally, we need to understand more about them.B: Then what did you do next?A: After that, we went out whale watching, following a group of whales in a boat.B: That sounds great. Did you just watch them, or did you do anything else?A: We started by taking pictures of their fins, so we could tell them apart. At the same time, we noted their location, so we could track them.B: What did you do afterwards?A: We created a database and gave each whale a name and number. Then finally, we shared our information with other whale research groups around the world.B: It all sounds so wonderful! I wish I could have joined youA: I do, too.Watch the video Protecting Biodiversity, and then discuss what other sea animals you would like to see. Talk with your partner and make a plan for a trip to see the animals. Your plan should include activities you would like to do.For our trip, we would like to go to the Shanghai Ocean Aquarium, whose theme is “Spanning five continents by a connection of water”. We can first visit the special exhibition of saving sharks. Then we can go to see the seahorses whose number declined greatly for the past decade. However, most people do not know much about seahorses at all. I think we need to raise awareness about seahorses and marine conservation in China. The last spot will be The Chinese Pavilion, which displays the aquatic organisms and bio-system in the Yangtze River and some national endangered rare aquatic creatures, like Chinese alligator and Chinese Sturgeon.In groups, make a list of plants and animals that live under the sea that you and your classmates have seen in any of the ways listed above. Share what you know about these plants and animals. Do you have any favorite sea plants or animals? Tell your classmates what they are.What do you know about the oceans?SurveyFor the visitors What is marine biodiversity exactly? What are the worlds rarest marine species? Why are so many species disappearing? How can you help promote marine biodiversity?For the staff in the museum Does species diversity follow any patterns? How is marine biodiversity measured? What is being done to preserve marine biodiversity? What did you do to promote biodiversity while exploring or studying the oceans?The last whaling station in Australia closed in 1978. Whales are now an endangered species and in need of conservation. They are now protected by an international ban on whaling. However, some countries oppose the ban. In groups discuss the reasons for and against banning whaling.As part of the Tides of Change livestream, A reporter took a deep dive alongside a team of marine biologists to witness their fascinating work underneath the sea. How to make such an underwater livestream come true? How to plant corals in the ocean? Why is it important to protect them? Lets watch a video and get to know what people do to protect biodiversity and protect the ocean.AROUND CHINACoral reefs are nicknamed the rainforests of the sea. However, environmental degradation is inflicting serious damage on them, threatening the diversity of ocean life. Experts are calling for joint efforts to protect them.Coral reef ecosystems are known as underwater “tropical rainforests.” To restore the seabed ecology, conservation work has been carried out since 2004 on Fenjiezhou Island, including coral transplantation, bans on illegal fishing, and raising peoples awareness about the significance of coral reefs protection. Now coral covers 34 percent of the tourist area and 40-50 percent of the scuba diving area.Listening textCraig: Here at the camp we are wild about whales! Today you have been helping us with our whale research.First of all, we asked you to find out some facts for a whale profile.What did you find,Sally? Sally: There are over 80 different species of whales. These include the blue whale, the largest known animal to have ever existed. They can grow to 100 feet long,and can weigh nearly 200 tons! There are two main types of whale: those with teeth, and those without.Those without teeth eat very small organisms, whereas those with teeth eat fish and other larger sea animals. More than 70 species of whales have teeth. Craig: Great!Then,we asked you to think about why we do whale research. Yes, Ben. Ben: Firstly, it is to monitor how many whales there are. Whales are threatened by many factors, including climate change, pollution, and hunting. Secondly, it is to track where whales go,so we can understand more about them,like their life cycle. Lastly, we know that whales are very intelligent. They communicate and hunt using complex sounds,and even sing and share songs. They can learn by themselves and can teach the things they have learnt to their young.We want to understand more about this. Craig: Very good,Ben.And lastly,we asked you to go out with us and write a report of the work we do. Can you give us your report, Luke? Luke: Yes. First, we followed a group of whales with the boat.Then we took pictures of their fins. Most whales have slightly different fins and marks, which can help us to tell them apart. Meanwhile, we also noted their location, so we can track their movements and plot their migration path. Later, we created a database of their fins and locations. After that,we gave the group of whales a name, and each member a number. They will be added to the directory so we can identify them in the future. Finally, we contacted other whale research groups around the world to share the information with them. Craig: Excellent! Thank you all for your help today. Do you think human beings can still see various sea animals in 100 years and why? Do you think protecting biodiversity is an urgent matter and why? Write down your thoughts in 100 words.