Unit2Savingtheearth.docx

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1、Unit 2 Saving the earth一、教学目标与要求通过本单元学习,学生了解地球当今所面临的重大污染问题。如对空气、 水的污染现状和造成的严重后果;了解人类活动对我们周围环境造成的破坏,以及对动物生存造成的极大威胁, 使学生能更好地树立环保意识。学生能用英语描述以上内容,并通过讨论,得出自己的看法和人类应采取的措施。使英语学习和语言能力的提高与增强环保意识结合起来;通过对话课的学习与操练,学生复习有关表示同意和假设的用语;学习并初步掌握过去分词作定语和表语的用法;正确完成练习册安排的练习。二、教学重点与难点1 重点词汇damage; pollute; pollution; caus

2、e ;sight ; present; pour ;living ; proba bly ;separately;unclear waste;be fit for;hear about; turn to ;time and time again; lose one s sight; so that; die out; go off ; point to; toone s joy2 重要句型1 ) It is said that 125 000 people died in Russia as a result ofillnesses caused by this accident 2 ) Oc

3、eans are able to clean themselves, butcertain seas, once they become dirty, are not able to do so 3 )There are manyreasonsforanimalsdyingout ,butthemostimportantoneis thepartthathumans have played3 语法过去分词作定语和表语(ThePastParticipleasPredicativeandAttribute) 1 ) Polluted rivers and lakes have also been

4、a cause of death 2 )One suggested answer is for farmers to limit the numbers of their cattle 3 )Another problem is that good soil is gradually lost4 ) One quarter of the shoresof the Mediterranean are polluted4 日常交际用语同意和假设 ( Agreement and supposition) 1 )It s a good ideato hold such conferences 2 )

5、Yes If we go on polluting the world,it won t befit for us to live in 3 ) I agree with you We ve got to do something about thepollution Itgettingsworse 4 ) Yes,itcertainlyis Ifpeopledon stoppolluting the seas and rivers, there will be no fish left 5 ) That s quite true 三、课型(一)对话课 教具录音机、投影仪。 课堂教学设计1 教

6、师通过向学生提出下列问题导入本课:Do you think the world is facing a lotof problems? If you do, please thint these problems What are they?由学生讨论以上问题,引出有关防止污染、保护地球的话题。2 准备放对话录音。 借助授影片打出以下听前提问:1 )about?2 ) What did Jackie do at the meeting?What was the conference放录音一至两遍,请学生回答上述问题,教师予以必要订正。Key : 1 ) The conference was a

7、bout the damage that is being caused to the world 2 ) Jack ie listened to some lectures about pollution and so on at the meeting 根据本课对话内容, 教师再提出一些问题, 检查学生的理解程度 (可参阅练习册所列内容)。3 再次放对话录音,学生跟读。将学生分为两人一组练习对话。数分钟后,请两三组同学到前面表演。教师指导学生归纳本课中有关同意和假设(Agreement语句(见日常交际用语部分)。组织学生两人一组,练习书上Practice中所安排的练习。4 要求学生将本课对

8、话改写为一篇短文,描述Jackieandsupposition)的常用参加会议所涉及的内容。教师可给予必要的提示。提示语(用投影仪打出) :1 ) What conference did Jackie attend? 2 ) What wasit about? 3 )What did they do at the beginning?4 )What opinion did Jackie haveafterattendingtheconference?5 )Saysomethingaboutthetalkontheincrease in the world s population将首句给出:Jackie is talking to Yang Pei about a conference he has just beento 要求学生根据对话,参照老师所给的提示及首句编写短文,当堂要求学生完成。数分钟后,请几住同学朗读自己的短文,教师予以讲评。

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