Unit 13 We’re trying to save the earth!
Section A (3a—3c)
【学习目标】 1.学习并掌握新词汇：
shark, fin, method, cruel, cut off, harmful, chain, ecosystem, low, industry, law,
environment,
environmental, scientific 2. 学会并正确使用以下常用表达：
hear of, cut off, throw…into, no longer, not only…but also, be harmful to, at the top of the food chain, the sale of… ,ask sb. to do sth., so far, be good for, be against, in danger
3. 学会使用以下句型：
1) Do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup?
2) When people catch sharks, they cut off their fins and throw the shark back into the ocean. 3) This method is not only cruel, but also harmful to the environment.
4) The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
5) They have even asked governments to develop laws to stop the sale of shark’s fins. 【重点难点】
·Important words, phrases and beautiful sentences.
·Give some reading skills and let students know how to use them. 【新知预习】 根据句意和首字母提示完成单词。
1. This method is not only c_______, but also harmful to the environment. 2. Sharks are at the top of the food chain in the ocean’s e_______.
3. But in fact, around 70 million sharks are caught and traded in this i_______ every year. 4. Many have heard of shark’s f_______ soup.
5. If their numbers drop too low, it will bring d_______to all ocean life. 【课堂探究】
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1. cut off
(1)砍掉，如：He cut off a branch from the tree.
(2)中断，如：They were cut off in the middle of their telephone conversation. 有关cut 的词组：
cut up: 切碎 如：He cut up vegetables into small pieces. cut down：
(1)砍倒，如：Many trees were cut down in this area.
(2)减少，如：To cut down air pollution, we should take the bus or subway instead of driving. 2. not only…but also
(1)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。如: She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。
(2) 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。如: Not only you but also he has to leave. 不只是你，他也得离开。 若连接两个句子，not only后面的句子要用倒装，如: Not only did he speak more correctly, but he spoke more easily. 他不仅说得更正确，而且讲得更不费劲了。 【达标练习】 I. 单项选择。
( ) 1. Many have ______ shark’s fin soup.
A. heard of B. hear of C. hearing of
D. heard from
( ) 2. But do you realize that you’re killing a whole shark ______ you enjoy a bowl of
shark’s fin soup?
A. if B. when C. but D. although
( ) 3. When people catch sharks, they _______ their fins
A. cut down B. cut in C. cut off D. cut up
( ) 4. Without a fin, a shark can________ swim and slowly dies.
A. not any more B. not any longer C. not longer D. no longer
( ) 5. Sharks are at the top of the food chain, _______ if their numbers drop, the ocean’s
ecosystem will be in danger.
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A. but B. although C. so D. when
II. 用所给单词的适当形式填空。
1. This famous and expensive dish is especially popular in _________ (south) China. 2. _________ (environment) protection groups around the world are teaching the public about “finning”.
3. They have even asked governments to develop laws _________ (stop) the sale of shark’s fins.
4. So far, no _________ (science) studies have shown that shark’s fins are good for health. 5. Around 70 million sharks are _________ (catch) and traded in this industry every year. III. 根据所给汉语完成英语句子。
1. 这种著名而昂贵的菜在中国的南部特别受欢迎。
This famous and expensive dish is _________ _________ in _________ China. 2. 但是，你能意识到当你在享受一碗鱼翅汤的时候，你正在杀掉一整个鲨鱼吗？
But do you realize that you’re killing a whole shark_________ _________ you enjoy a bowl of shark’s fin soup?
3. 这种方法不仅残酷，而且对环境的伤害特别大。
This method is________ ________ cruel, _________ _________ harmful to the environment. 4. 鲨鱼在海洋生态系统中处于食物链的顶端。
Sharks are at the top of the food chain in the _________ _________. 5. 尽管没有科学研究支持这些，但是很多人相信鱼翅对健康有利。
Although there are no scientific studies to support this, a lot of people believe that shark’s fins _________ _________ _________ _________. 6.如果我们不做些什么阻止鱼翅的买卖，鲨鱼在未来的一天可能会消失。
Sharks may disappear one day if we do not do something to stop_________ _________ _________ shark’s fins.
●Time, Time again, I ask myself （请写出这节课你的收获，完成下面的反思） 【学后反思】
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