新人教版選修七Unit3Underthesea-Warmingup[課件]

1、Unit 3Under the sea 景泰二中 崔琴 Have you ever seen plants andanimals that live under the sea ?Do you like sea plants and animals?Warming UpToday, I will take you to go on a trip to the world under the sea. So, are you ready?海底世界 馬爾代夫 旅游風景.flvWe come across a great variety of marine animals. What can you

2、 see on your trip?Turtle 海龜Look. Its coming towards us.UndertheSeaWhats this?Sea horse海馬 Squid 魷魚 crab 螃蟹 lobster 龍蝦Sea star 海星This looks beautiful! Jellyfish 水母Coral 珊瑚 kelp 海藻 eel 海鰻 ，鱔魚UndertheSeaclam 蛤Angel fish 天使魚Different kinds of little fishAnemone fish ?？~Clown fishButterfly fish Sea-slug海蛞

3、蜦UndertheSeaparrotfish 鸚鵡魚A shark is coming. Look out! Its dangerous.He noticed us. Wed better leave him alone before its too late.Bye, Mr Shark!UndertheSeaDolphin 海豚Whats this?White whale白鯨Killer whale虎鯨 Baleen whalesQuiz1. How many types of whales alive are there today?Two B. there C. fourtoothed

4、whales and baleen whales 2. Which type of whales does killer whales belong to ?A. baleen whales B. toothed whales C. shark3. Which is the largest whale in the world?Killer whales B. baleen whale C. blue whale 4. Whales breathe air through blow-holes into_. Gills (腮） B. mouth C. lung5. Which kind of

5、whale eat meat?A killer whale B blue whale C humpback whale (駝背鯨)6. Which family do killer whales belong to ?A shark B dolphin C whalebaleen whale 7. The killer is sometimes called the “_ of the sea because they worked as a team and they were very fierce. A. wolf B. dog C. tiger8. Who will be the le

6、ader of the team? A. male whales B. female whales C. baby whales9. Are Killer whales likely to attack people and eat people?A. Yes B. No Where can we see them?Discussionat an aquariumon a snorkelling tripOn a snorkeling tripAt an aquariumOn a boat tourIn booksIn filmsOn TV nature programmesOn the In

7、ternetSummary Look up the new words and expressions of the reading in the dictionary.2. Preview the reading: OLD TOM THE KILLER WHALEHomeworkThank you!Bye-byeWhales are huge, intelligent seamammals. They breathe air through blow-holes into lungs (unlike fish who breathe using gills). Whales have smo

8、oth, shiny, streamlined (流線型）bodies that move easily through the water. What is a whale? 趣味小閱讀There are two types of whales alive today: toothed whales (齒鯨類) and baleen whales(須鯨類). Toothed whales have teeth and a single blowhole. They feed on eating fish and other sea mammals. Baleen whales are lar

9、ger than toothed whales. They are filter feeders (濾食者) that use baleen to sieve (過濾) food, and have two blowholes. Classification of whales Killer whales (虎鯨) belong to toothed whales, who are the largest of the dolphins and king of the sea, biggest carnivore(食肉動物) of the sea, killing all kinds of a

10、nimals 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 ge

11、nerally larger than toothed whales, and females are larger than males. This group includes the largest known animal species, the Blue Whale. What 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 bal