Unit 5 A Delicate World Understanding Ideas 课件-2023-2024学年高中英语外研版（2019）选择性必修第二册

MACQUARIE ISLAND: from Chaos to Conservation Learning objectives: At the end of the class, you will be able to: 1. Conclude the whole process about how Macquarie Island was destroyed. 2. Learn to retell the passage by using some phrases which talk about cause and effect. 3. Think deeply about the effect of these human activities on Macquarie Island and call on people to protect our delicate world. Enjoy the video What do you think of this island? What do you think of this island? Macquarie Island: Chaos to Conservation from Read the passage quickly and find out what happened to Macquarie Island? After rats, mice,cats and rabbits were brought to Macquarie Island ,they attacked native birds, ate native vegetation and caused soil erosion, which broke the island’s ecosystem. But now the island's ecology is on the road to recovery with humans’ efforts. Read for general idea Tip1: • the first sentene of each paragraph • key words of each paragraph location shape landscape inhabitants in the South-west Pacific ocean , halfway between Australia and Antarctic. long and thin green grass and bare rock contrast dramatically, giving it a wild and natural beauty. royal penguins, king penguins and elephant seals ? The present situation of the island live in perfect harmony with... What happened to Macquarie Island before the 1970s ? Actions Purposes Results To live there. unknowingly brought rats and mice Cats were brought to the island. The cats developed an appetite for ... To provide food for humans. The end result was that parakeets died out Human died out Humans arrived on Macquarie Island. To control the rats and mice. Rabbits were introduced to the island. …nature reserve With his goal in mind, a virus... The last cat was caught in 2000. With the departure of … 1970s 1980s-2000 2006 The rabbits caused... This incident made it clear that the rat, mouse...... Rabbits were reduced, but in consequence cats killed more birds. Traps and dogs were used... What happened to Macquar