新人教版选修七Unit3Warmingup讲述.ppt

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. Killer whales Baleen whales are characterized by having baleen plates for filtering food from water, rather than having teeth. Baleen whales are generally larger than toothed whales, and females are larger than males. This group includes the largest known animal species, the Blue Whale. * * * * Under the sea Unit 3 我们在此处增加本课时重点单词和短语表达部分, 旨在帮助学生在上课前对早读学习的单词及短语进行复习回顾，从而加深记忆。 ★ 用一分钟时间对单词进行复习，使 学生在新课学习中没有单词障碍。 ★ 通过朗读，使学生熟练掌握单词的 正确发音。 ★ 所呈现单词均出自课本单词表中的 词汇。 Words review n. 轶事；奇闻 adj. 每年的；按年度计算的 n. 年刊；年鉴 anecdote annual Objective Learn the plants and animals that live under the sea. Today, we’re going to take a look at the world under the sea. So, are you ready? Now, we are on a snorkelling trip under the sea. We’ll come across a great variety of marine animals. Come on! Dolphins 海豚 What are they? Turtle 海龟 Look. It’s coming towards us. Sea horse 海马 What’s this? Squid 鱿鱼 Sea star 海星 This looks beautiful! Jellyfish 水母 Coral 珊瑚 Angel fish 天使鱼 Different kinds of little fish Anemone fish 海葵鱼 Clown fish 小丑鱼 A shark is coming. Look out! It’s dangerous. He noticed us. We’d better leave him alone before it’s too late. Bye, Mr Shark! We are safe now. And I caught a sea star near the shore. If you like, where can you go to see more about the ocean life? on a boat tour in books, on the Internet, in the Ocean Park, on TV nature programmes, in films, etc. at an aquarium What’s happening in the pictures? A Killer Whale Whales are huge, intelligent sea mammals (哺乳类动物). They breathe air through blow-holes into lungs (unlike fish who breathe using gills). Whales have smooth, shiny, streamlined (流线型) bodies that move easily through the water. What is a whale? There are two types of whales alive today: toothed whales (齿鲸类) and baleen whales (须鲸类). Toothed whales have