人教版九年级英语-Unit-13-Section-A-3a-3c优秀公开课ppt课件.ppt

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1、Period 2 3a-3cSectionAUnit 13 Were trying to save the earth.Jason and Susan,what are your ideas for solving these problems?Role-play 2d.Well,to cut down air pollution,we should take the bus or subway instead of driving.Yeah,or ride a bike.There are other advantages of bike riding.Its good for health

2、 and it doesnt cost anything.Great ideas!What about waste pollution?Mmm,I think simple things like bringing a bag to go shopping can help.I started doing that a year ago.Me,too.Also,I never take wooden chopsticks or plastic forks when I buy takeaway food.I use the ones at home.And remember to throw

3、rubbish in the bins and keep public places clean and beautiful for everyone.So together,our actions can make a difference and lead to a better future!Translate these sentences into English.Translate these sentences into English.1.甚至是河底都满是垃圾。甚至是河底都满是垃圾。2.这个镇上的每个人都应该参与清扫。这个镇上的每个人都应该参与清扫。Even the botto

4、m of the river was full of rubbish.Everyone in this town should play a part in cleaning it up.3.骑自行车有其它的优点。骑自行车有其它的优点。4.我买外卖食品从来不拿木筷子和塑料叉我买外卖食品从来不拿木筷子和塑料叉 子。子。There are other advantages of bike riding.I never take wooden chopsticks or plasticforks when I buy takeaway food.The earth is badly polluted

5、.What should we do to save the earth?Lets take action(采取行动采取行动)Turn off the lights when you leave a room.Recycle books and paper.Take buses instead of driving cars.There are some animals are endangered.We should do something to protect the animals and the environment!The zoos provide homes for many

6、endangered animals.1.Have you ever seen a shark（鲨鱼）（鲨鱼）?2.What do you know about sharks?Read the passage about sharks and complete the fact sheet below.3aMany have heard of sharks fin soup.This famous and expensive dish is especially popular in southern China.But do you realize that youre killing a

7、whole shark each time you enjoy a bowl of sharks fin soup?When people catch sharks,they cut off theirfins and throw the shark back into the ocean.Without a fin,a shark can no longer swim and slowly dies.This method is not only cruel,but also harmful to the environment.Sharks are at the top of the fo

8、od chain in the oceans ecosystem.If their numbers drop too low,it will bring danger to all ocean life.Many believe that sharks can never be endangered because they are the strongest in their food chain.But in fact,around 70 million sharks are caught and traded in this industry every year.The numbers

9、 of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.Environmental protection groups around the world,such as WildAid and the WWF,are teaching the public about“finning”.They have even asked governments to develop laws to stop the sale of sharks fins.So far,no scientific

10、 studies have shown that sharks fins are good for health,so why eat them?Help save the sharks!Sharks are endangered,read the passage and judge the sentences.Read the first paragraph1.Sharks fin（鱼鳍）（鱼鳍）soup is famous and expensive all around the world.2.We have to kill a whole shark to get a bowl of

11、sharks fin soup.Read the second paragraph1.People cut off sharks fins and throw the sharks back into the ocean.2.Sharks are in the bottom of the food chain in the oceans ecosystem.n.生态系统生态系统食物链食物链Read the third paragraph1.Wild Aid and the WWF are environmental protection groups in China.2.Sharks fin

12、s are good for health.Where shark fin soup is popularNumber of sharks caughtand traded every yearHow much the numbers of some kinds of sharks have fallen in the last 20 to 30yearsTwo environmental groups which are against“finning”southern China70 millionover 90 percent WildAid and the WWFLets do thi

13、s to review the text!Some people like to eat sharks fin soup,especially in _China.But getting the sharks fin is very _.When people catch sharks,they _ _their fins and throw the sharks into the ocean.The shark slowly dies because it cant _ without the fin.And it is also _ to environment.Sharks are at

14、 the _ of the food chain.If the number of sharks drops too low,it will break the balance of nuture.Please say no to eating the shark fin soup,and take action to save the sharks!southern cruel cut off swim harmful topLets learn someLanguage points1.A shark can no longer swim and slowly dies.鲨鱼不能再游泳然后

15、慢慢死掉。鲨鱼不能再游泳然后慢慢死掉。no longer意思是意思是“不再不再”Im no longer a student.我不再是个学生了。我不再是个学生了。有两个短语和有两个短语和no longer同义，即同义，即notany longer和和notany more，但他们侧重的方，但他们侧重的方面不同。面不同。no longer和和notany longer侧重时间。侧重时间。e.g.He no longer lives here.=He doesnt live here any longer.他不在这儿居住了。他不在这儿居住了。(一个时间以前他住一个时间以前他住 在这儿，过了这个时间

16、，他就离开了。在这儿，过了这个时间，他就离开了。)notany more侧重程度和数量侧重程度和数量e.g.You can drink no more.=You cant drink any more.你不能再喝了。你不能再喝了。(喝酒的量到了一定程喝酒的量到了一定程 度，不能再继续下去了。度，不能再继续下去了。)2.This method is not only cruel,but also harmful to the environment.这种方法不但残忍而且对环境有害。这种方法不但残忍而且对环境有害。not onlybut also用于连接两个表示并列关系的成分，着用于连接两个表示并

17、列关系的成分，着重强调后者，其意为重强调后者，其意为“不仅不仅而且而且”;其中的其中的also有时可以省略。有时可以省略。e.g.She not only plays well,but also writes music.她不但很会演奏，而且还会作曲。她不但很会演奏，而且还会作曲。Not only men but also women were chosen.不仅仅是男的，女的也有被选中的。不仅仅是男的，女的也有被选中的。若连接两个成分作主语，其谓语通常与靠近的若连接两个成分作主语，其谓语通常与靠近的主语保持一致。主语保持一致。e.g.Not only you but also he has

18、to leave.不只是你，他也得离开。不只是你，他也得离开。not only放在句首，后接句子时要用倒装结构。放在句首，后接句子时要用倒装结构。e.g.Not only had the poor man been fined,but also he had been sent to prison.这个可怜的人不仅被罚款，而且还被这个可怜的人不仅被罚款，而且还被 送进了监狱。送进了监狱。be harmful to 对对有害有害e.g.Smoking is harmful to the health.吸烟有害健康。吸烟有害健康。Playing computer games much is har

19、mful to students.电脑游戏玩太多对学生有害。电脑游戏玩太多对学生有害。3.Sharks are at the top of the food chain in the oceans ecosystem.鲨鱼位于海洋生物系统食物链的顶部。鲨鱼位于海洋生物系统食物链的顶部。at the top of 在在最高地位最高地位;用最高用最高最大最大的的(速速度度,声音等声音等)e.g.I looked at the top of his head,his hair shiny and parted smoothly.我看他的头顶我看他的头顶,头发闪亮且平滑的分开。头发闪亮且平滑的分开。H

20、e shouted at the top of his voice in order that he might be heard.他尽力大声叫喊他尽力大声叫喊,以便别人能听见。以便别人能听见。4.If their numbers drop too low,it will bring danger to all ocean life.如果它们的数目降至过低，会给所有如果它们的数目降至过低，会给所有 海洋生物带来危险。海洋生物带来危险。此句复数形式的此句复数形式的numbers表达全海洋中鲨表达全海洋中鲨 鱼鱼的总量。当表示数值的高或低时，的总量。当表示数值的高或低时，number要用要用hig

21、h或或low修饰。修饰。e.g.In that country,the number of children going to school is higher in cities than in towns and village.在那个国家，城市儿童入学人数比乡镇在那个国家，城市儿童入学人数比乡镇 及及农村要高。农村要高。常与常与number搭配的动词有搭配的动词有grow,fall等。等。e.g.The number of families that own cars has been growing quickly recently.近来拥有轿车的家庭数量增长很快。近来拥有轿车的家庭数

22、量增长很快。5.Environment protection groups around the world,such as WildAid and the WWF,are teaching the public about“finning”.世界各地的环境保护组织，如野生救援协世界各地的环境保护组织，如野生救援协 会和世界自然基金会，都在教育公众有关会和世界自然基金会，都在教育公众有关 “猎翅猎翅”的行为。的行为。1)句中句中fin本为名词，指本为名词，指“鱼鳍鱼鳍”。此句中的。此句中的 finning由动词化的由动词化的fin（割鲨鱼鳍以获取（割鲨鱼鳍以获取 鱼翅）的鱼翅）的-ing形式转

23、化而成，指课文中所形式转化而成，指课文中所 陈述的陈述的“猎翅猎翅”这一行为。这一行为。2)WildAid和和WWF组织组织 WildAid（美国野生救援协会）是保护野生（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界年注册成立，其宗旨是保护及救助世界范围内的野生动物；范围内的野生动物；WWF（世界自然基金（世界自然基金会）英文全称为会）英文全称为World Wide Fund for Nature，成立于，成立于1961年，是享有国际盛誉，年，是享有国际盛誉，全球最大的独立性非政府环境保护组织

24、之一。全球最大的独立性非政府环境保护组织之一。1.Many people do not realize they are killing a whole shark _they enjoy a bowl of sharks fin soup.2.Sharks are at the top of the food chain,_ if their numbersdrop,the oceans ecosystem will be in danger.Read the passage again and fill in the blanks with the words in the box.sow

25、henso although if but when 3b3.Many think that sharks are too strong to be 4.endangered,_ they are wrong.4._there are no scientific studies to support this,a lot of people believe that shark fins are good for health.5.5.Sharks may disappear one day _ we do not do something to stop the sale of shark

26、fins.butAlthoughif I.用方框中用方框中词词的适当形式完成下面的句子。的适当形式完成下面的句子。(1)I think its _ to make such a young boy (2)work all day.(2)The poor fisherman cant _ his childrens education.(3)I think the government must develop _ to protect environment.(4)Eating too much junk food is _ yourI.health.II.(5)He can use diff

27、erent _ to work out the (1)problem.method,cruel,harmful,afford,lawcruelaffordlawharmfulmethodII.单项选择单项选择。1.Are you going to _ any of the events?Yes.Maybe long jump and high jump.A.take part inB.joinC.attend D.join in 2.I cant afford _ him an expensive birthday present.A.to buy B.buying C.for buyingD

28、.buy 3.Remember to _ the lights when you leave the room.OK.I will.A.turn onB.turn downC.turn upD.turn off 4.The girl always has some money to _ snacks.A.spendB.pay forC.takeD.cost 5.Look!_ boys are playing on the playground.Yes._ them is about 200.A.The number of;A number of B.The number of;The numb

29、er of C.A number of;the number of D.A number of;A number of III.根据根据汉语汉语提示完成句子。提示完成句子。1.我我们们必必须须采取行采取行动动来阻止他来阻止他们们。We must _ _ to stop them.2.我从没听我从没听说过这说过这个人。个人。I have never _ _ such a man.3.我我们乐们乐意尽力帮你意尽力帮你摆摆脱困境。脱困境。We are glad to do what we can do _ _ _.4.到目前到目前为为止，我已止，我已经经交了二十个朋友。交了二十个朋友。_ _,I have made twenty friends.5.实际实际上，她从没去上，她从没去过过那儿。那儿。_ _,she has never been there.In fact take actionheard ofto help outSo farWrite 5 measures to protect the environment.