(
课件网) Unit 5 Unit 5 A delicate world MACQUARIE ISLAND: from Chaos to Conservation To find out what happened to Macquarie Island To organise information carefully and find out human actions, purposes and results on Macquarie Island To recognise that humans must maintain awe and respect toward nature and have an awareness of living in harmony with it. Look at the picture below and answer the questions. 1. What animals can you see in the picture Penguins, and a bird. 1 2. What kind of changes would take place if cats, rats and rabbits were introduced to an environment like this They would hunt the birds and eat the native vegetation, thus upsetting the local ecological balance. Similar situation happens on Macquarie Island. What do you know about the island Macquarie Island lies in the South-west Pacific Ocean, halfway between Australia and Antarctica. Its native inhabitants encountered challenges. Human intervention led to the erosion of the original habitat, cased chaos and destroyed the ecology dramatically. MACQUARIE ISLAND: from Chaos to Conservation Read the title and look at the pictures. Predict what the passage is mainly about. a state of total confusion with no order the protection of the natural environment Read the passage and find out what happened to Macquarie Island. 2 Read the topic sentences; Link the topic sentences together to get the main idea of the passage; Draw the outline of the passage; Find or summarise the main idea of each paragraph. Native inhabitants on Macquarie Island were once in perfect harmony with their natural habitat. Rats and mice brought to the island caused harm. 过渡句 The rabbit problem resulted in parakeets' dying out. People released a virus to kill rabbits and used traps and dogs to catch the cats. The rat, mouse and rabbit problem made people realise that problems should be solved once and for all. I participated in a programme to tackle this very problem. What happened to the Macquarie Island Non-native species introduced to Macquarie Island attacked native birds, and led to a substantial reduction of bird population and even the extinction of parakeets. In addition, non-native species ate and devastated the native vegetation. All of this played a part in upsetting the natural harmony of the island. But now the island’s ecology is on the road to recovery with human efforts. Choose the author's purpose in writing the passage and give your reasons. 1. To analyse how Macquarie Island was saved from destruction. 2. To inform readers of the chaos caused on Macquarie Island by humans. 3. To entertain readers with a funny story about what happened on Macquarie Island. 4. To suggest ways in which an ecosystem can be protected. 3 作者根据自己的工作经验讲述了麦夸里岛是如何从19世纪初的一片混乱状态慢慢走向如今人与自然和谐共处的局面。语篇类型为记叙文。作者按照时间顺序向读者介绍了这一漫长的过程。时间顺序主要是通过正确运用时态以及时间状语、时间名词或小句形成 ... ...
