人教版新目标英语九年级《Unit-13-We-are-trying-to-save-the-earth》Section-A-(3a)课件.ppt

1、?TravellingFrank20165052821dogs1040A guessing gameUnit 13 Section A(3a)Food chain is an important part of the ecosystem.food chainDo you like pandas?A.Yes.B.No.Should we be friendly to pandas?Should we save the pandas?A.Yes.They are endangered animals.If we dont save them,they will disappear soon.No

2、.There are still many pandas on the earth.There is no need to save them.Lets go travelling NOW!Some people think that sharks are cruel.Sharks are at the top of the food chain in the oceans ecosystem.Do you like sharks?A.Yes.B.No.Should we be friendly to sharks?Should we save the sharks?A.Yes.Sharks

3、are in danger.If we dont save them,they will disappear soon.B.No.Sharks are very strong.They are cruel and dangerous.There is no need to save them.Read 3a quickly and find out the writers opinion.Should we save the sharks?Save the sharks!Proposing(提出提出)Save the sharks!Analyzing(分析分析)Solving(解决解决)Rea

4、d Para.1 and think.1.Have you heard of shark fin soup?2.Where is shark fin soup popular?1.Have you heard of shark fin soup?What is shark fin soup?鱼翅，就是鲨鱼鳍中的细丝状软骨，形似粉丝鱼翅，就是鲨鱼鳍中的细丝状软骨，形似粉丝,取材于鲨鱼的背鳍、胸鳍、尾鳍。取材于鲨鱼的背鳍、胸鳍、尾鳍。鱼翅价格昂贵，在高档酒店，每份鱼翅羹鱼翅价格昂贵，在高档酒店，每份鱼翅羹(shark fin soup)约约800-1500元人民币。元人民币。鱼翅本身并没有什么味道

5、，烹制时要用许多调味鱼翅本身并没有什么味道，烹制时要用许多调味品给鱼翅赋味品给鱼翅赋味。2.Where is shark fin soup popular?It is popular in southern China.Why does the writer say“You are killing a whole shark each time you enjoy a bowl of shark fin soup”?Lets read Para.2 and find the answer.1.What do people do with sharks when they catch them?

6、(and)2.What do you think of finning?(not only,but also)3.How many sharks are caught and traded every year?4.How much have the numbers of some kinds of sharks fallen in the last 20-30 years?Read Para.2 and answer the questions.1.What do people do with sharks when they catch them?(and)They cut off the

7、ir fins and throw the sharksinto the ocean.Why?Shark fins are very expensive.But the shark meat doesnt taste good,it is very cheap.In order to save the space for more fins,which means more money,people just cut off the sharks fins and throw them back into the ocean.This is called“finning”.2.What do

8、you think of finning?(not only,but also)What happen to the sharks after their fins are cut off?Without a fin,a shark can no longer swim and slowly dies.This is not only cruel,but also harmful to the environment.cruel,harmful =a bowl of shark fin soup the life of a whole shark 2.What do you think of

9、finning?cruel,harmful Why is it harmful to the environment?Sharks are at the top of the food chain in the oceans ecosystem.If their numbers drop too low,it will bring danger to all ocean life.Saving Sharks is saving ourselves!3.How many sharks are caught and traded every year?4.How much have the num

10、bers of some kinds of sharks fallen in the last 20-30 years?Around 70 million sharks are caught and traded every year.The numbers of some kinds of sharks have fallen by over 90%in the last 20-30 years.Save the sharks!It is not only,but also to the Without a fin,a shark can swim andSharks are at the

11、top of the in the oceans.If their numbers too low,it will bring to all ocean life.Around million sharks areandevery year.When people catch,theytheir finsand the shark back into the.Proposing(提出提出)Analyzing(分析分析)Solving(解决解决)1.What do the environmental protection groups around the world do to fight a

12、gainst“finning”?2.Have any scientific studies shown that shark fins are good for health?Read Para.3 and answer the questions.They are teaching the public about finning.They have even asked the governments to develop laws to stop the sale of shark fins.No.Whats the fact?科学研究显示，鱼翅中胶原蛋白含量虽然很高，科学研究显示，鱼翅

13、中胶原蛋白含量虽然很高，但缺少一种必需的氨基酸但缺少一种必需的氨基酸(色氨酸色氨酸)，不容易被人体，不容易被人体吸收。鱼翅的营养价值还不如牛奶，鸡蛋。吸收。鱼翅的营养价值还不如牛奶，鸡蛋。另外，鱼翅被汞等有毒重金属污染的程度高达另外，鱼翅被汞等有毒重金属污染的程度高达70%70%。鲨鱼处在食物链顶端，因此它们体内积聚的。鲨鱼处在食物链顶端，因此它们体内积聚的有毒物质常常超出正常允许含量的数十倍。有毒物质常常超出正常允许含量的数十倍。=Why eat fins?Save the sharks!It is not only,but also to the Without a fin,a shark

14、 can swim andSharks are at the top of the in the oceans.If their numbers too low,it will bring to all ocean life.Around million sharks are caught andWhen people catch,they their fins and the shark back into the.Proposing(提出提出)Analyzing(分析分析)Solving(解决解决)Environmental protection groups are the public

15、 about.They have asked the to develop to stop the of shark fins.Should we be friendly to sharks?Should we save the sharks?A.Yes.Sharks are in danger.If we dont save them,they will disappear soon.B.No.Sharks are very strong.They are cruel and dangerous.There is no need to save them.Save the Sharks!Wh

16、at can people do to save the sharks?As a middle school student,what can you do to save the sharks?Lets have a discussion in groups.Lets write a proposal(倡议书倡议书).What should we do?Proposing(提出提出)Analyzing(分析分析)Solving(解决解决)A proposal(倡议书倡议书).Proposing(提出提出)Save the tigers!Analyzing(分析分析)Solving(解决解决)

17、People are killing tigers for their skin and bones.This is not only cruel,but also do harm to the environment.Tigers are at the top of the food chain in the forest ecosystem.If their numbers drop too low,it will bring danger to all forest life.Lets tell people it is important to save the tigers.We c

18、an also ask the government to develop laws to protect tigers.No trading,no killing!Proposing(提出提出)Dont eat shark fin soup!Analyzing(分析分析)Solving(解决解决)No trading,no killing!Save the wild animals!Proposing(提出提出)Save the elephants!Analyzing(分析分析)Solving(解决解决)killfor ivorycut off,not only,but also play

19、an important part in food chainIf drop,bring danger to tell the public not to buyask to develop laws to stop.Saving wild animals is saving ourselves!1.Read the passage again.Tell your friends why we should save the sharks.2.Improve your proposal.If you have time,you can watch a movieSHARKWATER.Homework: