1、高考资源网（） 您身边的高考专家2014-2015学年高中英语（重庆）同步教案（6）：Unit 4 Global warming人教新课标选修6）The Sixth Period WritingTeaching goals 教学目标1. Target language 目标语言a. 重点词汇和短语litter, butt, pollute, endanger, solution, add up to, break down b. 重点句式 P66Apart from the fact that butts spoil the beauty of the environment, they co
2、ntain some very toxic chemicals.It is up to people not to let plastic bags become litter. The earth would be a better place because it would be less polluted.2. Ability goals 能力目标Enable the students to write an essay on one of the environmental problems.3. Learning ability goals 学能目标Enable the stude
3、nts to learn how to write an essay.Teaching important points 教学重点The structure of an essay.Teaching difficult points 教学难点Enable the students to learn how to support their points of view.Teaching methods 教学方法Task-based method.Teaching aids 教具准备A computer and a projector.Teaching procedures & ways 教学过
4、程与方式Step Revision and Lead-inCheck the homework. Ask two groups to present their talk to the class.T: In the last period, we talked about plastic bags. What do you think of plastic bags?S: Plastic bags are widely used all over our country. Many people use them to carry food or other things. But I th
5、ink they are annoying and they seriously pollute our environment. T: You are right. Plastic bags are also known as white pollution. They endanger our environment and peoples health. Now, lets read an article and find how they endanger the environment. I hope after reading the article, all of you can
6、 realize the harm of using plastic bags and use fewer of them.Step ReadingT: Open your workbooks and turn to page 66. Read Toms essay about litter. Make a summary for each paragraph, and then fill in the table on page 67. You dont have to write down complete sentences, notes will be OK. Pay attentio
7、n to the writing skills while reading.Sample answers:Paragraph 1Point of viewTwo of the most common and dangerous litter: cigarette butts and plastic bags.Paragraph 2First point of the argument; EvidenceCigarette butts are small but bad for the environment: over 1,600 billion cigarettes are smoked e
8、ach year and large quantities of butts are thrown away; Butts contain toxic chemicals; Decrease the quality of water; Endanger plants and animalsParagraph 3Second point of the argument; EvidencePlastic bags litter is a danger to the environment: Waste of non-renewable resources; Last from 20 to 1,00
9、0 years in the environment; Kill up to one million seabirds, 100,000 sea mammals and countless fish every yearParagraph 4Point of viewThe best solution would be not to smoke or use plastic bags at all.T: This article is an essay. Essay is a short literary composition on a single subject, usually pre
10、senting the personal view of the author. After reading the article, can you summarize the writing characteristics of the essay?S: Let me try. In the first paragraph, the author presents his point of view on butts and bags. And in the next two paragraphs, he separately presents his views on butts and
11、 bags and provides evidences to support his views. In the last paragraph, he states his views again and calls up people to do something to our planet.Step Pre-writingT: After reading this essay, Id like you to write an essay on your own. I will give you some tips on how to write an essay.Show the ti
12、ps on the screen.Writing tips:Step 1: Write out the thesis statement.(point of view)Step 2: Write out the topic sentence of the first body paragraph.Step 3: Give the supporting points and details about the first subtopic.Step 4: Write out the topic sentence of the second body paragraph.Step 5: Give
13、the supporting points and details about the second subtopic.(more body paragraphs . )The last step: State again the thesis statement.(point of view)Step WritingAsk the students to list as many environment topics as possible. Choose one topic and write an essay about it.T: Now think of the environmen
14、tal problems that concern people most. I will divide you into two groups. Each group tries to give as many environment topics as possible. Lets see which groups get more topics.Ask the students to speak out the topics and collect them on the screen or blackboard.A sample list of environment topics:a
15、ir pollution, noise, soil erosion, water pollution, litter classification, desertification, make green by planting treesT: Now choose a topic from the list that you feel strongly about. Make notes on your topic using headings similar to those in the table above. Use Toms essay as a model to write yo
16、ur own.A sample version:The Environmental Effects of Fossil FuelsThere is no doubt that fossil fuels bring a lot of good to us. But do you know that many of the environmental problems our country faces today result from our fossil fuel dependence. The environment faces air pollution, global warming,
17、 acid rain, and several other very serious problems because of our use of fossil fuels. Over the last 150 years, burning of fossil fuels has resulted in more than 25 percent increase in carbon dioxide in our atmosphere. Carbon dioxide is one of the main factors in global warming which is negatively
18、affecting everyone. Fossil fuels also affect water pollution, land pollution, and thermal pollution(heat pollution). Coal mining is one of the causes of pollution in the environment. After the mining is completed, the land will remain barren. Materials other than coal are also brought to the surface
19、 in the coal mining process, and these are left as solid wastes. The production, transportation, and use of fossil fuels are to blame for the effects of pollution on the environment. Then what should we do? We should spare no effort to improve our environment. Please save energy and use fewer fossil fuels in our daily lives.Step Homework1. Finish the essay. 2. Review the whole unit by doing SUMMING UP on page 32 and CHECK YOURSELF on page 68.- 3 - 版权所有高考资源网
