Unit 6 Bird watching 单元主题拓展阅读 课件-牛津译林版英语八年级上册.pptx

《Unit 6 Bird watching 单元主题拓展阅读 课件-牛津译林版英语八年级上册.pptx》由会员分享，可在线阅读，更多相关《Unit 6 Bird watching 单元主题拓展阅读 课件-牛津译林版英语八年级上册.pptx（19页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Unit 6 Expanded Reading 八年级上册BridwatchingtypesproblemssolutionsabilitiesAsk a Pigeon!How much do you know about pigeons?Well,I am a pigeon.So what do you want to know?Q:Why does every city in the world have pigeons?A:Humans have themselves to thank!City pigeons are are descended descended fromfrom r

2、ock doves.Long ago,wild rock pigeons lived on rocky cliffs.During the day we eat seeds and berries.Around 5,000 years ago,humans started building cities and growing graingrain.Pigeons liked townsthere was lots of dropped grain to eat,and there were not many hawks.City people built houses for pigeons

3、 to live in too.They kept pigeons to carry messages,or just as pets.We became homing pigeons.Humans took their pigeons with them all over the world.So now were everywhere.Modern city pigeons are feralferalanimals that once were kept by humans,but now run wild.Tall city buildings are a lot like our o

4、ld cliffs.Q:How fast can a pigeon fly?A:We can go as fast as a car on the highway,around 97 km an hour.And we can keep up that speed for a long time!The fastest racing racing pigeonpigeon can fly at the speed of about 148 km per hour.Q:Whats a pigeons most amazing skill?A:We use our beaksbeaks like

5、straws to sucksuck up water!No other bird can do that.Ask a Pigeon!1._2._3._4._5._hawkpigeonseedsgrainberrieshawkseedspigeongrainberriesAsk a Pigeon!QuestionsAnswersWhy does _ has pigeons?rock dove city pigeonsHow fast do pigeons fly?1.as fast as a _ on the highway2.speed of the _ racing pigeonwhats

6、 pigeons most amazing skills?They drink water by _,using their beaks as straws.humanscitycarfastest148 kmsuckingAsk a Pigeon!Which of the sentence is the best choice for the blank in paragraph 4?A.We are very afraid!B.How dangerous they are!C.We feel right at home!D.How high we can fly!Ask a Pigeon!

7、1.小河每年冬天变得干涸。(run)The river _ in winter every year.2.我们应该保持优良传统。(keep up)_ fine traditions.3.汽车正以每小时80公里的速度行驶。(at a speed of)The car _.runs dryWe should keep upis running at a speed of 80km per hourAsk a Pigeon!Is it OK to feed city pigeons?If you were the pigeon,whats your answer?Long-Distance Trav

8、ellersBirds are amazing animals,and their most amazing skill is their sense of direction.Some migrate long distances.They know exactly where to fly,without a compass!Migrating birds often fly thousands of kilometres.They find their way back to the same place year after year.Even young birds that hav

9、e not migrated before seem to know which way to go.In Europe,you may see big groups of swallows sitting on telephone wires.As the weather gets colder in autumn,they get ready to fly away to warmer countries.These birds fly south to Africa for the winter.They will return north to Europe to breed next

10、 summer.Birds have many ways to prepare for their migration journey.The little sedge warbler(水蒲苇莺)doubles its weight by eating lots of insects just before it leaves Europe.It flies 9,000 kilometres.It travels without stopping for four days to spend winter in South Africa.Bar-headed geese(斑头雁)breed i

11、n Tibet(西藏).They then fly over the Himalayas(喜马拉雅山)to India.They have to fly at a height of over 6,000 metres to get over the huge mountains.Other birds,such as cranes,also fly high over mountains.Long-Distance Travellers1.distance _ A.an ability to do things well2.double _B.to make sth.twice as muc

12、h3.skill_C.the amount of space between 2 placesCBALong-Distance Travellerscranespreparemountainshow farLong-Distance TravellersBirds are amazing animals,and their most amazing skill is their sense of direction.Some migrate long distances.They know exactly where to fly,without a compass!Migrating bir

13、ds often fly thousands of kilometres.They find their way back to the same place year after year.Even young birds that have not migrated before seem to know which way to go.In Europe,you may see big groups of swallows sitting on telephone wires.As the weather gets colder in autumn,they get ready to f

14、ly away to warmer countries.These birds fly south to Africa for the winter.They will return north to Europe to breed next summer.Birds have many ways to prepare for their migration journey.The little sedge warbler(水蒲苇莺)doubles its weight by eating lots of insects just before it leaves Europe.It flie

15、s 9,000 kilometres.It travels without stopping for four days to spend winter in South Africa.Bar-headed geese(斑头雁)breed in Tibet(西藏).They then fly over the Himalayas(喜马拉雅山)to India.They have to fly at a height of over 6,000 metres to get over the huge mountains.Other birds,such as cranes,also fly hi

16、gh over mountains.Long-Distance Travellers1.According to the text,which is birds most amazing skill?A.Their ability to catch food.B.Their sense of direction.C.Their sense of smell.D.Their flying ability.2.In Europe,you may see big groups of _ sitting on telephone wires.A.sedge warblers B.cranes C.sw

17、allows D.bar-headed geese3.What do sedge warblers do before they travel to South Africa?A.Eat a lot of food.B.Hide a lot of food in some places.C.Train young birds.D.Practise flying.4.Which is right order according to the text?Birds return north to the same place.Birds get ready for their jounery.Bi

18、rds fly to warmer countries.The weather gets colder.A.B.C.D.Why Are Flamingos Pink?Flamingos are tall,mostly pink birds with long legs.But they arent actually born pink.They are grey or white,and turn pink over the first couple of years of their lives.Have you ever heard the expression“you are what

19、you eat”?Well,flamingos are just that.In the wild,flamingos feed on shrimp,small clams,fish,insects,and algae.Yum!These foods,especially the algae,are rich in carotenoids(类胡萝卜素).Inside a flamingos body,carotenoids are changed into a red-orange pigment（色素）that turns its feathers pink.Before scientist

20、s understood that flamingos got their colour from their food,zookeepers puzzled over why the pink birds turned white in zoos.Now they feed flamingos a diet rich in carotenoids and vitamins to keep their birds“in the pink”.Still,flamingos fade when caring for their young.Unlike their chicks,mama and

21、papa birds dont eat much.This decreases the pigment stored in their feathers,so they lose colour.If a flamingo eats blueberries,will it turn blue?Dr.Kevin McGraw,who studies feather colour in birds at Arizona State University,guesses if a flamingo eats enough blueberries,it would probably still turn

22、 pink,not blue!Thats because the pigments that make blueberries blue,are changed into colourless chemicals in the birds body.But blueberries also contain a small number of carotenoids.So they would probably lightly colour the feathers pink.Why Are Flamingos Pink?Draw your own text structureWhy Are F

23、lamingos Pink?Flamingos colourPara 1:_ to turn pinkPara 3:how _ keep their flamingos in the pinkPara 2:why it turns pinkits colour comes from the _ it eatsPara 4:why flamingos wont turn _ if they eat blueberrieswhen/timefoodzookeepersblueWhy Are Flamingos Pink?What can we learn from the text?A.Zooke

24、epers first found out why flamingos are pink.B.The red-orange pigment is stored in the flamingos skin.C.There are no carotenoids in blueberries.D.The flamingo is the best example of“you are what you eat”.Why Are Flamingos Pink?abilitiescarry lettersfly fastsuck up waterchange coloursfly far awayfly over mountainshave a sense of directionWrite on your ownReview all the texts in this unit and wirte an article about a kind of bird in about 100 words._