《Unit 3 Under the sea-warming up (1)》课件三十四(47张PPT)(人教版选修7)
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,unit 3 Under the sea,Warming up,benthal/undersea world,Look at some pictures,Talk about your favourite sea plants or animals. Where can you see sea plants or animals ?,Talking,at an _,aquarium,Diver 潜水员,on a _ trip,snorkelling,On a snorkeling trip,At an aquarium,On a boat tour,In books,In films,On TV nature programmes,On the internet,Make a list of plants and animals under the sea that you have seen.,turtle 海龟,I can fly in the sea! I am a turtle,kelp海带,white whale白鲸,anemone 海葵,dolphin 海豚,dolphin 海豚,eel 海鳗,sea horse海马,coral 珊瑚,coral 珊瑚,sea star 海星,butterfly fish 蝴蝶鱼,shark 鲨鱼,parrot fish 鹦嘴鱼,angel fish 天使鱼,jellyfish 水母,seal 海豹,bowhead 大头鲸,bluewhale,octopus章鱼,oyster 牡蛎,lobster 龙虾,crab,krill,Krill, group of shrimp-like crustacean (甲壳类), is known to be the main food of baleen whales,whales,killer whales,toothed whales,baleen whales,Killer whales,Killer whales are one of the top predators(食肉动物) in the sea. As a group, killer whales are known to eat fish, squid, seals, sea lions, penguins, even other whales.,orcas,Orcas are highly social animals that travel in groups called pods. Pods usually consist of 5 to 30 whales, and are led by females. Orca pods often work together to catch a meal (fish, squid, birds, and marine mammals).,Baleen whales have no teeth but instead have baleen plates with which the whales can filter the food out of the water.,On the top of the head, toothed whales have a single blowhole, the baleen whales have two blowholes, which open only when the whale takes a breath.,feed in summer in cold waters and spend the winter in warmer waters without an abundance of food.,annual migration,Most baleen whales migrate over the entire globe, moving from the Antarctic(南极) where they feed on krill, to the sub-tropics(亚热带), where they breed and spend the winter season.,What do you know about these plants and animals?,Dolphins are clever and friendly to people.,Sea lions are clever and can play games.,Corals are colourful and in charming shapes.,Kelps are tasty and nutrient.,Old Tom The Killer Whale,Evidence of helping the whalers,throw itself out of the water and crash down again,Telling the whalers theres a whale out there,Evidence of helping the whalers,swim by the boat,Showing the whalers the way to the hunt,Evidence of helping the whalers,Work as a team,A _ of killers are throwing themselves _ the whales blow-hole to stop it _; and some others are stopping it _ out to sea.,pack,on top of,breathing,fleeing,Evidence of helping the whalers,The killers started _ between our boat and the whale just like a pack of _ dogs. Then the _ was ready and the man in the _ of the boat _ it _ the whale and let it _ ,then it hit the spot.,racing,excited,harpoon,bow,aimed,at,go,“the killers started racing between out boat and the whale just like a pack of excited dogs.” Why do you think the killer behaved like this ? 2. Why do you think the whalers allowed the killer whales to drag the whale under the water to feed on its lips and tongue ? 3. Why did the whales return home without the whales body ? 4. How did Old Tom help James ?,comprehending,Although the killers were _ hunters , they never _ or _ people. In fact , they _ them.,discussion,Discuss the relationship between Old Tom and the whalers. What other animals help out humans in hunting ?,fierce,attacked,protected,harmed,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,- 配套讲稿:
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