人教版选修7:Unit 3 Under the sea warming up(共31张PPT)

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名称 人教版选修7:Unit 3 Under the sea warming up(共31张PPT)
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科目 英语
更新时间 2014-06-21 08:13:50

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课件31张PPT。 Under the SeaUnit 3Words preview snorkel
aquarium
anecdote
annualvi. 戴潜水通气管潜泳
n. (潜水艇或潜水者)通气管
n. 水族馆;养鱼缸
n. 轶事;奇闻
adj. 每年的;
按年度计算的
n. 年刊;年鉴Today, we’re 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.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 fishAnemone fish 海葵鱼Clown fishA 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 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 listed above. Share what you know about these plants and animals.What’s happening in the pictures?A Killer Whale Whales are huge, intelligent sea
mammals. 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 teeth and a
single blowhole. They feed on eat fish and
other sea mammals. Baleen whales are
larger than toothed whales. They are filter
feeders (滤食者) that use baleen to sieve
(过滤) food, and have two blowholes. Classification of whales Killer whales (虎鲸) belong to toothed whales, who are the largest of the dolphins and king of the sea, biggest carnivore(食肉动物) of the sea, killing all kinds of animals in the sea, even the huge 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 whales, and females are larger than males. This group includes the largest known animal species, the Blue Whale.









Baleen whalesWhat do you think is happening in
the picture?Read the introduction of the passage
on page 19 and then fill in the chart
below. Clancy A whalerAnecdotesAt the beginning of the 20th
century Southeastern coast of AustraliaThe killer whales helped
the whalers kill baleen
whalesBrief introduction of the passageHomework1. Look up the new words and expressions of the reading in the dictionary.
2. Preview the reading:
Old Tom The Killer WhaleThank you!