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,Unit 13,Section A,3a-3b,Were trying to save the earth!,Unit 13Section AWere trying t,1,1.What do you know about sharks?,2.Do you think sharks can be endangered?Why?,3.What do you think might cause a fall in the number of sharks?,1.What do you know about shar,2,The shark is being killed.,The man is,cutting,the fin,off,.,The shark is being killed.The,3,The sharks that have no fins will be,thrown back into,the ocean again.,The fins will be delivered to the markets or the restaurants,.,The sharks that have no fins w,4,3a,Read the passage about sharks and complete the fact sheet below.,Save the Sharks!,Many have heard of shark fin soup.This famous and expensive dish is especially popular in southern China.But do you realize that youre killing a whole shark each time you enjoy a bowl of shark fin soup?,听说过,鱼翅汤,中国南部,3a Read the passage about sha,5,When people catch sharks,they cut off their fins and throw the shark back into the ocean.This is not only cruel,but also harmful to the environment.Without a fin,a shark can no longer swim and slowly dies.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.Many believe that sharks can never been endangered because they are the strongest in their food chain.,割断，切下,残忍的,对,有害的,食物链,海洋生态系统,When people catch sharks,6,But in fact,around 70 million sharks are caught and traded in this industry every year.The numbers of some kinds of sharks have fallen by 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.Then have even asked governments to develop laws to stop the sale of shark fins.So far,no scientific studies have shown that shark fins are good for health,so why eat them?Help save the sharks!,行业,野生救援协会,世界自然基金会,But in fact,around 70 million,7,Where shark fin soup is popular,Number of sharks caught and traded every year,How,governments can help,Two environmental groups against finning,In southern China,70 million,Develop laws to stop the sale of shark fins,WildAid and,the WWF,Where shark fin soup is popula,8,so,although,if,but,when,1.,Many people do not realize they are killing a whole,shark _ they enjoy a bowl of shark fin,soup.,2.Sharks are at the top of the food chain,_,if,their numbers drop,the ocean,s ecosystem will be in,danger.,when,so,3b,Read the passage again and fill in the,blanks with the words in the box.,soalthoughifbutwhen1.Many peop,9,3.Many think that sharks are too strong to be,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.Sharks may disappear one day _ we,do not do something to stop the sale of shark fins.,but,Although,if,3.Many think that sharks are,10,1.What do people do when they catch sharks?,2.What will happen to a shark without a fin?,3.What do the two environmental protection groups,ask the governments to do?,4.Are shark fins good for health?,They cut off their fins and throw the shark back into the ocean.,They can no longer swim and slowly dies.,To develop laws to stop the sale of shark fins.,No scientific studies have shown.,1.What do people do when they,11,1.,Save,the Sharks!,save,作,动词，意为“救，拯救”，后常跟介词,from,。,He,saved the boy from the big fire.,他从大火中救出了那个男孩。,The dog saved the,girls life.,那只狗救了女孩的命。,2.A shark can,no longer,swim and slowly dies.,no longer,意思是“不再”,Im,no longer,a student.,我不再是个学生了。,1.Save the Sharks!2.A shark,12,有两个短语和,no longer,同义，即,notany longer,和,notany more,，但他们侧重的方面不同。,no longer,和,notany longer,侧重时间。,He no longer lives here.,=He doesnt live here,any longer.,他不在这儿居住了。,(,一个时间以前他住在这儿，,过了这个时间，他就离开了。,),notany more,侧重程度和数量。,You can drink no more.,=You,cant drink any more.,你不能再喝了。,(,喝酒的量到了一定程度，不能再,继续下去了。,),有两个短语和no longer同义，即notany,13,3.,harmful,形容词，意为“有害的”。常构成短语,be harmful to,“,对,有害的”。,Staying up often is harmful to your health.,经常熬夜对你的健康有害。,【,拓展,】,harm,名词，意为“害处”。常用构成短语,do harm to“,对,有害”，相当于,be harmful to.,Too much smoking does harm to his health.,=Too much smoking is harmful to his health.,吸烟过多对他的健康有害。,3.harmful形容词，意为“有害的”。常构成短语,14,4.This method is,not only,cruel,but alsoharmful,to,the environment.,not onlybut 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“不仅,而且,”;,其中的,also,有时可以省略。,She,not only plays well,but also writes music.,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。,4.This method is not only crue,15,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。,Not only you but also he has to leave,.,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。,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，而且还被送进了监狱。,若连接两个成分作主语，其谓语通常与靠近的主语 not onl,16,5.If their,numbers,drop too,low,it will bring danger to all ocean life.,此句复数形式的,numbers,表达全海洋中鲨鱼的总量。当表示数值的高或低时，,number,要用,high,或,low,修饰。,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 及农村要,高。,常与,number,搭配的动词有,grow,fall,等。,5.If their numbers d
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