英语必修Ⅲ牛津译林版UNIT1课件（共20张）PROJECT.ppt

1、Shark attacksProjectBasking shark Shark SpeciesGreat white Shark SpeciesWhale shark Shark SpeciesTiger shark Shark SpeciesBlue shark Shark Species What are Sharks?Sharks are fish that have been living around us since the dinosaurs.Males are called“Bulls”.Females are called“Cows”.Baby Sharks are call

2、ed“Pups”.Other shark facts:Sharks have five to seven gill slits.Many sharks must keep moving in order to breathe,that is,in order to keep water moving past their gill slits but this is not true for all species.Nurse sharks,for example,can lie still and fan their gills to bring oxygen-rich water acro

3、ss the slits.Because they lack a swim bladder,all sharks must swim in order to avoid sinking towards the ocean floor.The shark has senses specially adapted for the animals life underwater.Smell is a sharks most acute sense.About 70 percent of the sharks brain is used for olfactory(smelling)functions

4、.Experiments have shown that sharks can detect prey solely by smell,and the hungrier the shark is,the less stimulant needed to elicit a reaction.Sharks are sensitive to light and can detect certain objects even in dark water.Just like cats and other animals whose eyes glow in the dark.Sharks do have

5、 ears.A shark can detect sound waves and disturbances in the water.Sharks can also sense electric and magnetic fields.1.Are sharks frightening?2.How many different types of sharks are there in the ocean?Do all of them attack humans?3.Do sharks feed on humans if they have the choice?4.What are the th

6、ree types of shark attacks?5.Why have shark attacks been increasing recently?Read the article,find answers to the following questions;Three fierce sharks:Fill in the informationthe great white sharkthe tiger sharkthe bull shark Read the text again and try to find out the topic sentence of each parag

7、raph.(The topic sentences may appear at the beginning of the paragraph,or at the end.)Paragraph 1:30 out of 400 sharks may attack humans.Paragraph 2:The chances of being attacked by a shark is very small.Paragraph 3:There are three types of shark attacks.Paragraph 4:Advice on helping reduce the chan

8、ces of being attacked.Paragraph 5:Three tips to help you when attacked by a shark.Paragraph 6:Do not be frightened by sharks.Four pieces of advice to avoid shark attacks:Dont swim in the dark.Dont swim if you are cut or if you have a fresh wound.Dont wear bright clothing or jewellery.Try and stay in

9、 groups.Three tips to help you if a shark attacks you Dont panic.Hit the shark on the nose.Stick your finger in the sharks eye.Useful phrases1.mainly because2.two other sharks3.the chances of being pared to5.many more people6.the low number7.feed on8.be fit to do9.wait for sb to do10.the latter two1

10、1.follow the advice12.have a fresh wound13.be more likely to be deadly14.over a long distance15.wear bright clothing or jewellery16.hit the shark on the nose17.stick your finger in the sharks eye18.30 times greater1.He has much _ of winning the first prize.2.The chances are a hundred to one against

11、you,its most _ that you will succeed.3.What does the little dog chiefly _ _?4.Dont hit him _ _ head!5.Why not wear some flowers instead of _ when you go to the ball?chanceunlikelyfeedonon thejewelleryFill in the blanks,using the proper forms of the above words:Summarize the text1.Types of shark attacks2.Advice on reducing the chances of being attacked3.The tips to help you when attacked1.Do Parts part A,B and C on page 90 in Workbook.2.Review words and phrases in this unit.