人教版高中英語(yǔ)選修7 Unit3 Warming up精品課件

1、Unit 3 Under the SeaWarming upToday, were going to take a look at the world under the sea.So, are you ready?Now, we are on a snorkeling trip under the sea.Well come across a great variety of marine animals. Come on!Dolphins 海豚海豚What are they?Turtle 海龜海龜Look. Its coming towards us.Sea horse海馬海馬Whats

2、this? Squid 魷魚(yú)魷魚(yú)Sea star 海星海星This looks beautiful! Jellyfish 水母水母Coral 珊瑚珊瑚Angel fish 天使魚(yú)天使魚(yú)Different kinds of little fishAnemone fish 海葵魚(yú)?？~(yú)Clown fishA shark is coming. Look out! Its dangerous.He noticed us. Wed better leave him alone before its too late.Bye, Mr Shark!We are safe now.And I caught a

3、 sea star near the shore.If you like, where can you go to see more about the ocean life? on a boat tripin books, on the Internet, in the Ocean Park, on TV etc.at an aquarium 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

4、 listed above. Share what you know about these plants and animals.Whats happening in the pictures?A Killer Whale Whales are huge, intelligent seamammals. They breathe air through blow-holes into lungs (unlike fish who breathe using gills). Whales have smooth, shiny, streamlined (流線型）流線型）bodies that

5、move easily through the water. What is a whale? There are two types of whales alive today: toothed whales (齒鯨類(lèi)齒鯨類(lèi)) and baleen whales(須鯨須鯨類(lèi)類(lèi)). Toothed whales have teeth and a single blowhole. They feed on eat fish and other sea mammals. Baleen whales are larger than toothed whales. They are filter fe

6、eders (濾食者濾食者) that use baleen to sieve (過(guò)濾過(guò)濾) food, and have two blowholes. Classification of whales Killer whales (虎鯨虎鯨) belong to toothed whales, who are the largest of the dolphins and king of the sea, biggest carnivore(食肉食肉動(dòng)物動(dòng)物) of the sea, killing all kinds of animals in the sea, even the huge

7、 blue whale, like tigers on land, working in a team.Average lifespan: 50 to 80 years Size: 7 to 9.7 m Weight: up to 6 tonsKiller whalesBaleen whales are characterized by having baleen plates for filtering food from water, rather than having teeth. Baleen whales are generally larger than toothed whal

8、es, and females are larger than males. This group includes the largest known animal species, the Blue Whale. Baleen whalesWhat do you think is happening inthe picture?Read the introduction of the passage onpage 19 and then fill in the chart below. WriterVocationStyleTimePlaceMain idea Clancy A whalerAnecdotesAt the beginning of the 20th century Southeastern coast of AustraliaThe killer whales helped the whalers kill baleen whalesBrief introduction of the pas