Unit 4 Global warming Reading 课件（ 23张PPT）

课件23张PPT。Q: What has caused these problems?Global warmingQ: Is global warming good or bad?The earth is becoming warmer - but does it matter?From the title, guess the main idea of the passage A. Carbon dioxide B. Greenhouse gases C. Different ideas about global warmingGuess Task 1Match the main idea with each part.Part 1 (Para 1): Part 2 (Para 2-5): Part 3 (Para 6-7):C. The Introduction of global warming.A. How has global warming come aboutB. Different ideas about whether global warming mattersTask 2Read para 1 What are the two questions Sophie Armstrong wants to explore?→ _____ and _____How has this come about?Does it matter?Task 3 From the two graghs, with the rising of carbon dioxide, we can see temperature is _____, which lead to global warming.increasingHow has global warming come about? She says, “..., but it could be very _____.” seriouspositiveHe states, “more carbon dioxide is actually a _____ thing.” Dr Janice FosterGeorge Hambley Why?VSHow do scientists think of global warming?Task 4 a rise of sea levelstormsfloodsdroughtsfaminesspread of diseasesdisappearance of speciesa rise of sea levelstormsfloodsdroughtsfaminesspread of diseasesdisappearance of speciesplants grow quickercrops produce morea greater range of animalsTask 5: Discussion What's your opinion about global warming? What's your opinion? I think ... because...“... will .... in the future.” “There will be...”... will... in the future die out/ disappearAnimals... will... in the futureriseSea levelThere will be... in the future floods... will have... in the future more foodPeople... will ... in the future grow quickerPlants... will ... in the future see new animalsPeople 作为中学生的你对全球变暖现象很关注，因此以“Does global warming matter?”为题，谈论这一话题。主要内容如下： 1.介绍全球变暖　 2.介绍人们对于全球变暖不同的观点 3.谈谈自己的观点 注意：合理安排文章结构；可适当增加细节，以使行文连贯流畅Writing1. write in groups 2. share 3. assess(评价)Writing: Does global warming matter? sharing and assessing(评价)whether the writing sticks to the topic (符合题意) whether the writing has any spelling or grammar mistakes? whether the writing has any advanced words or expressions (高级词汇和短语) Summary1. Read a passage about global warming 2. Write an article about global warming“Hope for the best. Prepare for the worst.”1. Read the passage again 2. Revise the writing.