《Earth first》SectionA PPT第一部分内容：晨诵晚读Are Shark Nets Necessary?为了防止鲨鱼对人类的攻击,一直以来澳大利亚的海岸线都设置防鲨网,但是研究发现该做法弊大于利。Shark nets in place across Australia,specifically in New South Wales(NSW) and Queensland,to protect beachgoers should be dropped as they have caused more harm than good.The measures①were carried out by some governments,including nets and traditional drum lines,and provided beachgoers with a false sense of safety.The study found the effectiveness of nets was difficult to evaluate②,while the significant damage they cause to other marine wildlife was clear.Researchers desire for non-deadly shark control measures such as eco barriers,which physically separate③swimmers from sharks,sonar(声呐) technology,and various shark-spotting techniques.Researchers said while the risk of coming across a shark was rare,any shark-related deaths and injuries caught huge public and media attention.One of the arguments in support of using shark nets is that just one shark-related death has been reported in Queensland since the 1960s.Similarly④,since the 1930s,NSW has had only one shark-related death.But there have been at least 13 people killed by sharks at beaches without nets on the NSW north coast over the past two years.The Humane Society International’s head of campaigns,Nicola Beynon,said the government needed to move away from outdated methods⑤.“Deadly shark nets and drum lines are more than 50 years behind scientific and animal welfare standards for dealing with marine wildlife,” said Beynon.The NSW Greens’ marine spokesman,Justin Field,said,“People are 100 times more likely to drown at the beach than to be killed by a shark in Australia.Therefore,millions of dollars going into the shark net program should be directed to observation⑥ towers for our lifeguards and improving the beach devices.”词海拾贝①measure n.措施②evaluate vt.评估③separate vt.分开④similarly adv.相似地⑤method n.方法⑥observation n.观察典句欣赏The study found the effectiveness of nets was difficult to evaluate,while the significant damage they cause to other marine wildlife was clear.译文:研究发现,防鲨网的有效性很难评估,而它们对其他海洋野生动物造成的重大损害则是显而易见的。分析:本句总体上是一个并列句。The study found是第一个分句,while the significant damage...是第二个分句。在第一个分句中the effectiveness of nets was difficult to evaluate是宾语从句,在第二个分句中they cause to...是定语从句。理解诱思1.What do researchers focus on?答案:Friendly shark control ways.2.What do Nicola Beynon and Justin Field have in common?答案:No shark nets are to be used.... ... ...Earth first PPT，第二部分内容：课前篇自主预习Ⅰ.知识体系图解重点词汇1.__________ n.鲨(鱼)2.__________ v.使(某人)惊恐,吓唬3.__________ v.(通常指使用呼吸设备的)潜水4.__________ v.把……作为目标5.__________ adv.幸运地6.__________ n.灭绝,绝种7.__________ n.(尤指通过行为表现出的对某事的一般)看法,态度重点短语1.in fear__________2.be scared/frightened/afraid of__________3.cut...off__________4.have a(n)...effect on__________5.be covered with__________6.the other way round__________7.see...as__________8.from that day on__________9.by mistake__________10.protect...from...__________11.raise awareness of__________重点句式This was not only due to fear of sharks,but also finning.Finning is a type of fishing where sharks are caught and their fins cut off.Ⅱ.释义匹配1.scare　　　A.something that you are trying to achieve2.diveB.not existing3.targetC.the opinions and feelings that you usually have about something4.extinctionD.to make someone feel frightened5.attitudeE.to jump into deep water with your head and arms going in first答案:1.D　2.E　3.A　4.B　5.CⅢ.阅读导学根据pp.62—63课文内容,选择正确答案1.What is the purpose of the first paragraph?A.To advertise a movie.B.To introduce the topic.C.To show sharks are dangerous.D.To warn people not to swim in the sea.2.What can we infer from the second paragraph?A.The movie had a bad influence on the viewers.B.The viewers began to know the nature of sharks.C.Sharks were animals that ate humans.D.People began to care about sharks.3.We know from the third paragraph that finning is______.A.difficult　　　　B.cruelC.exciting　　　　D.easy4.What made Benchley believe humans was a danger to sharks?A.The movie Jaws.B.The shark fin soup.C.The attacks of sharks by mistake.D.The finning scene.... ... ...Earth first PPT，第三部分内容：课堂篇学习理解重点词汇1.scared adj.惊恐的,恐惧的【课文原句】People have always been scared of sharks,but Jaws made things worse.人们一直都恐惧鲨鱼,但《大白鲨》令事情变得更糟糕。【词汇精讲】句中的scared是形容词,意为“害怕的,恐惧的”。One thing I am sure of was that she was scared.有一点我能肯定,那就是她当时被吓到了。I’m scared of telling her what really happened.我害怕告诉她所发生的事情。2.due to由于,因为【课文原句】This was not only due to fear of sharks,but also finning.Finning is a type of fishing where sharks are caught and their fins cut off.这不仅是因为害怕鲨鱼,而且也是因为生切鱼鳍。生切鱼鳍是一种捕捞方式:鲨鱼被捕获后,切掉它们的鳍。【词汇精讲】due to是固定搭配,引出原因,意为“由于,因为”。Mistakes due to carelessness may have serious consequences.由粗心大意造成的错误有可能带来严重的后果。The train had stopped due to a mechanical problem.火车因为机械故障停了下来。3.extinction n.灭绝,绝种【课文原句】Today,as we learn more about sharks,more people than ever want to protect them from extinction.今天,随着对鲨鱼了解得更多,越来越多的人都想保护它们免遭灭绝。【词汇精讲】extinction是名词,意为“灭绝,绝种”。The species was doomed to extinction.这一物种注定要灭绝。Many species are in danger of extinction because of our destruction of their natural habitat.许多物种由于我们破坏了它们的自然环境,现在正面临灭绝的危险。重点句式This was not only due to fear of sharks,but also finning.Finning is a type of fishing where sharks are caught and their fins cut off.这不仅是因为害怕鲨鱼,而且也是因为生切鱼鳍。生切鱼鳍是一种捕捞方式:鲨鱼被捕获后,切掉它们的鳍。【句式剖析】not only...but also...用于连接两个表示并列关系的成分,着重强调后者,其意为“不但……而且……”;其中的also有时可以省略。Light and bright colours make people not only happier but (also)more active.浅色和鲜艳的颜色不但使人看了更加高兴,也会使人更加活泼。Man has become master not only of the sky but also of the space.人类不但征服了天空,而且征服了太空。【句式拓展】(1)not only...but also...连接的两个成分作主语时,其谓语在人称和数上通常与邻近的主语保持一致。(2)not only...but also...连接两个句子,且not only位于句首时,not only后面的句子要用部分倒装。Not only I but also Tom and Mary are fond of watching television.不仅我,而且汤姆和玛丽都喜欢看电视。After the earthquake,not only was there no electricity,but also there was no clean water.地震以后,不仅没有电,而且也没有干净的水。Not only does he have a first-class brain but also he is a hard-working man.他不仅有着头等聪明的大脑,而且很勤奋。随堂练习Ⅰ.单句填空1.If there were anything to be _________(scare) of,you wouldn’t have chosen this place!答案:scared2._________(fortunate),I was chosen to participate in an exchange study program.答案:Fortunately3.An operation is beginning to try to save a species of crocodile from_________(extinct).答案:extinction4.What they saw in the film made them_________(frighten).答案:frightened5.The students stopped_________(talk) when the teacher came in.答案:talkingⅡ.语篇填空The opening scene from the 1975 film Jaws showed a woman 1.________(attack) by a shark.The scene strengthened people’s long-held idea of the great white shark as a 2.________(danger) animal.People who saw the film started to believe sharks ate humans and stopped 3.________(swim) in the sea.Others began to kill sharks as many as they could.Some even killed the sharks and used their fins in shark fin soup.4. ________ a result,the number of sharks in the world reduced greatly.Peter Benchley,5.________ was the author of the book the film Jaws 6.________(base) on,was greatly affected by finning.In 1980,when Benchley was diving,he was shocked by 7.________he saw.Sharks were being killed and the sea floor was covered with dead sharks.This caused a deep change in him.He came to see people as 8. ________danger to sharks.From that day on,he tried his best to protect sharks.Fortunately,not everyone who watched the film Jaws became afraid of sharks—some became interested in 9. ________(understand) them.Today,as we learn more about sharks,10.________(many) people than ever want to protect them from extinction.Ⅲ.概要写作根据教材pp.62—63的语篇内容写一篇60词左右的内容概要参考范文The scene that a woman is being attacked by a shark makes people further believe that the great white shark is a danger to people.(要点1) Therefore,people began killing sharks and finning,which greatly reduced the number of sharks around the world.(要点2) Affected by the scene of finning,the author of the book changed his attitude towards sharks and began to protect them.(要点3) Now more and more people begin to protect sharks from extinction.(要点4)关键词：外研版高中英语必修二PPT课件免费下载，Earth first PPT下载，.PPT格式； 本作品中主体文字及图片可替换修改，文字修改可直接点击文本框进行编辑，图片更改可选中图片后单击鼠标右键选择更换图片，也可根据自身需求增加和删除作品中的内容，源文件无水印。如认为该内容涉嫌侵权，可通过邮件提出书面通知，我们将及时处理。