21世纪英文报高二教案 864期（6版）Covered in darkness (P6)教案

1、2021-2022学年度第33期总第864期Covered in darkness (P6)Lead inDo you know Earth Hour?Earth Hour is a global event organized by WWF (World Wildlife Fund) and is held on the last Saturday of March annually. Households and businesses turn off their non-essential lights and other electrical appliances for one ho

2、ur to raise awareness about need to take action on climate change.Look at the title “Covered in darkness”, what do you think the passage is about? Read to check your prediction.Fast readingRead the passage fast and fill in the blanks.During Earth Hour each year, people _ for one hour, which draws at

3、tention to the threat of _.Key: turn off all their electrical appliances; light pollutionCareful readingRead the passage carefully and answer the questions.1. When does light pollution happen?Light pollution happens when too much man-made light harms nature.2. How are animals affected by light pollu

4、tion?For nocturnal animals: Their sleep cycles are disturbed, which disorientates them and harms their physical health.For baby turtles:They are attracted to lights and crawl inland or aimlessly down the beach until dawn when predators or birds get them.For predators and preys:Imbalance in the eco-s

5、ystem.3. What is the aim of the passage?A. To promote Earth Hour.B. To raise peoples awareness of light pollution.C. To call on people to pay attention to the ecosystem.Key: BDiscussionIn what other ways do you know light pollution is harming nature?·Plants growth is disturbed.·It contribu

6、tes to seaweeds thriving, killing plankton (浮游生物) and causing water pollution.·Birds are misguided and get killed or injured. Think and share Language study1. This year, Earth Hour was observed on March 26.observe: v. 庆祝；观察；遵守 n. observationobserve the rules 遵守规定译文：今年的地球一小时在3月26日庆祝。Eg: The pati

7、ents were observed for a week.病人被观察了一周。2. The annual tradition, started by the World Wildlife Fund in 2007 in Sydney, Australia, was created to raise awareness for climate change.started by. 过去分词做tradition的定语raise awareness for 提高对的认识译文：这项一年一度的传统由世界野生生物基金会于2007年在澳大利亚的悉尼创立，目的是为了提高（人们）对气候变化的认识。3. These creatures rely on the natural light cycle provided by the movement of the sun to help coordinate their sleep cycles.rely on 依赖provided by . 过去分词做定语修饰light cyclecycle 周期；循环译文：这些生物依赖太阳运动所提供的自然光循环来帮助协调睡眠周期。4. Animals have evolved on this pl