概要：2. Play the game to see who can find as many as possible the past participles in the text on Page 53. Then explain the functions of these words.Step IV Practise1. Get Ss to do Ex 2 P115. Tell them to fill in the blanks without looking back at the text.2. Ask one student to act as a librarian in national museum of nature history. And 《Saving the earth(第3页)》出自：www.88haoxue.com网www.88haoxue.com other students to ask some questions about some certain animal, such as Panda:How many Pandas
Saving the earth,标签：高二英语教案大全,http://www.88haoxue.com2. Play the game to see who can find as many as possible the past participles in the text on Page 53. Then explain the functions of these words.
Step IV Practise
1. Get Ss to do Ex 2 P115. Tell them to fill in the blanks without looking back at the text.
2. Ask one student to act as a librarian in national museum of nature history. And
《Saving the earth(第3页)》出自：www.88haoxue.com网How many Pandas are in the World? Why they are few? What can we do to protect them? and so on.
Step Ⅵ Homework
1. Written work WB P115. Ex 4. Ask Ss to guess and find the difference between so --- that and so that.
2. Written work WB116 Ex3. And find the functions of Past Participles in the sentences.
探究活动
1.Suppose you are a scientist and you attend a conference about the pollution in the area you live in. You should prepare a talk about the facts, history and the reasons about the local pollution in different aspects, such as earth, air and water. Can you sum up the most important and serious pollution in your area? (Do you concern about the population pollution?) And do you find the best way to solve these problems? (Such as integrated methods? And international co-operation?)
2.了解中国某一地区的污染状况其发展的原因，解决方法。 如果是重工业城市可以参观某些工厂如化工厂，水泥厂和钢铁厂， 如果是农村则应该参观林地和农田询问公社的气象局和土地办等有关情况。如果污染已经改善则问清楚是何手段和方法，如果没有任何改善则向有关的机构询问解决的可能，并向污染单位建议。最后用英文写一篇小论文。
3．如果条件允许，可以上网浏览环保的网站并与其他国家的人民交换环保的信息和知识。加强了解，毕竟中国的环保起步较晚。同时学习一些有关环境的英文表达方式，积累知识。
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