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必修3《Lesson 2 Protecting the Sea》集体备课PPT课件优质课下载
Do you want to take her home and keep her as a pet?
Is it a good idea to take your own Dory home and keep it as a pet？
While-reading: Skimming
Read the passage and summarize the main idea
It is not a good idea to take your own Dory home because it will do harm to the sea.
Careful-reading
1. What is the problem with the clownfish (Nemo)? What causes the problem?
2. What is the problem with the blue tang (Dory)?
3. How can people catch a blue tang?
4. What is the problem with the way to catch a blue tang?
5. What is a good idea if you want to see a blue tang?
Questions & Answers
1. What is the problem with the clownfish (Nemo)? What causes the problem?
People bought so many Nemos that some wild communities of the fish dropped greatly in number.
2. What is the problem with the blue tang (Dory)?
There is the same problem with Dory’s species.
Over-fishing
3. How can people catch a blue tang?
Using a chemical named cyanide is a cheap and easy way to catch blue tangs.
4. What is the problem with the way to catch a blue tang?
Cyanide is very harmful. Coral affected by cyanide can become white or pale and die. Non-targeted fish left behind also can die. Even the fish caught for sale in pet shops may die within a few weeks or months after the cyanide treatment.
Pollution
5. What is a good idea if you want to see a blue tang?
It is a better idea to simply travel to where the fish live and visit the fish there.
aquarium