Unit 5 A delicate World Understanding ideas 课件-2025-2026学年高二英语外研版选择性必修第二册

A delicate world A delicate world Understanding Ideas Unit 5 Unit 5 Please watch a video Are humans part of Earth’s ecosystems? In what ways can humans affect ecosystems? 6p-prepare Are humans part of Earth’s ecosystems? In what ways can humans affect ecosystems? Leading in Watch a video and discuss: Are humans part of Earth’s ecosystems? In what ways can humans affect ecosystems? In positive ways In negative ways …… …… Plant trees Kill animals Pre-reading Look at the title and predict the main idea of the passage. Macquarie Island: from Chaos to Conservation Chaos Conservation How do humans destroy ecosystems How do humans build ecosystems How do humans restore ecosystems 6p-present While-reading Skim: Read for structure. Part 1: para ____ Part 2: para ____ Part 3: para ____ ___________ of Macquarie Island ___________ of Macquarie Island ___________ of Macquarie Island 1 beauty 2-3 chaos 4-6 conservation 6p-present The passage is developed in the order of time. while-reading Choose the author’s purpose in writing the passage. To analyse how Macquarie Island was saved from destruction. To inform readers of the chaos caused on Macquarie Island by humans. To entertain readers with a funny story about what happened on Macquarie Island. To suggest ways in which an ecosystem can be protected. While-reading Scan part 1 and find the beauty of the island. I am standing on Macquarie Island, in the South­west Pacific Ocean, halfway between Australia and Antarctica. Strong winds and stormy seas have helped sculpt its long, thin shape. The green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural beauty. No visitor would think it surprising that the island is a UNESCO World Heritage Site. Nor would they fail to imagine how its native inhabitants, including royal penguins, king penguins, and elephant seals, existed in perfect harmony with their natural habitat for thousands of years. 6p-practice ADD YOUR TITLE HERE Macquarie Island(麦夸里岛) Location Shape Landscape Title Inhabitants in the ____________Pacific Ocean between ________ _______ and _______ shape caused by _______ wind and ___________ ___________ and ________ contrast ___________ a _________ and ________ beauty ________ and _______ penguins, _________ and _________ Australia Antarctica Pacific Ocean South-west Australia Antarctica ADD YOUR TITLE HERE Macquarie Island(麦夸里岛) Location Shape Landscape Title Inhabitants in the ____________Pacific Ocean between ________ _______ and _______ shape caused by _______ wind and ___________ ___________ and ________ contrast ___________ a _________ and ________ beauty ________ and _______ penguins, _________ and _________ South-west Australia Antarctica long thin strong stormy seas ADD YOUR TITLE HERE Macquarie Island(麦夸里岛) Location Shape Landscape Title Inhabitants in the ____________Pacific Ocean between ________ _______ and _______ shape caused by _______ wind and ___________ ___________ and ________ contrast ___________ a _________ and ________ beauty ________ and _______ penguins, _________ and _________ South-west Australia Antarctica long thin strong stormy seas green grass bare rock dramatically UNESCO World Heritage Site royal king elephant seals While-reading Scan part 2 and finish the blanks. brought ________ rats&mice brought ________ cats brought ________ rabbits took over the island, eating the birds' eggs and attacking baby birds. Aim: Aim: Aim: Results unknowingly control the rats and mice food for humans developed an appetite for the birds soil erosion more cats hunting the birds Results Results The end result parakeets died out in 1891 6p-practice While-reading Scan part 3 and finish the mind map. after the 1970s in the 1980s after 2006 measure(s) result(s) to remove rabbits to kill cats to remove all release_______ fewer________ but_____ birds fewer virus rabbits use__________ drop poison use_______ traps &dogs dogs no ____,but more _____,______ land collapse _____free in 2014 ecology is ________ ________ cats rats rabbits pest on recovery 6p-practice Post-reading Retell the passage based on the mind map. Macquarie Island(麦夸里岛) Chaoes conservation rats&mice cats rabbits took over the island developed an appetite soil erosion Release virus Use traps &dogs drop poison Use dogs 6p-perform Post-reading Think and share What is your understanding of “... we humans owe it to the island to give it a happy ending” ? It is _________ that have damaged the __________ of the Macquarie island and it is humans’ _________ to help it return to ________. humans ecosystem duty normal beauty chaos conservation Human harmony 6p-produce Post-reading Think and share From this story, do you konw how we can avoid similar problems happening? Discuss in groups and share your ideas. ? • * Avoid human intervention. • * Think twice before action while tackling problems. • * Better late then never • * Raise the awareness of protecting nature. • * Keep balanced between development and conservation. ... 6p-produce Do you want to know about China’s ecological conservation efforts？ Only to obey nature in order to overcome nature. ---Charles Darwin Humans and nature have a close relationship. Nature provides essential resources for human survival and development. However, as society develops, humans have been exploiting natural resources excessively, leading to environmental problems like pollution and climate change. To achieve sustainable development, we must balance economic growth with environmental protection. We need to use resources wisely and reduce waste. Protecting nature is not only about preserving the environment, but also about ensuring a better future for ourselves and future generations. 4月22日是世界地球日，你将代表全体师生演讲，呼吁大家“珍爱地球，保护环境，人与自然和谐共生。” Cherish the earth, protect the environment, and live in harmony with nature homework-writing GROUP1 homework-writing GROUP2 假如你是一名英语导游，带领同学们去参观麦夸里岛。你会怎么介绍呢？ $$