教学目标
Teaching aims and demands
本单元的教学目标是使学生掌握表示判断和个人看法的常用语句，学会使用现在完成时的被动语态。能利用职权课文中所提供和信息，对比民航在购买计算机管理系统前后的情况，进行描写或表述。
1)Important vocabularies
damage, waste, pollute, fit, room, turn---into, cattle, cause, limit, in place, blow away, sight, present, pour, die out, in danger, no more than, purpose, go off, measure, point to, joy
2）Daily expressions
What was the conference like? (What do you think of /about ---? How do you like ---? How about ---?)
It’s a good idea. (I agree with you. That’s quite true. )
We’ve got to do something about pollution.
What else did you hear about at the meeting?
If ---, ----.
3) Useful phases
It was called ---.
That’s a problem we Chinese must pay special attention to.
It won’t be fit for us to live in.
Many of the injured lost their sight.
A lot of disease are present in the water.
The waters of this great lake.
In 1989 an oil tanker hit a rock off the northwest coast of Alaska.
The most important one is the part that humans have played.
First, ---. Second, ----.
In all there are probably no more than a total of 400 tigers left in China.
Last Monday our class went on an organized trip to a forest to study the wildlife.
He was busy measuring a plant and taking photographs of it.
To my great joy, ---.
4) Grammar
The Past Particle as Predicative and Attribute
 

教学建议
能力训练
1．通过口头练习，学会日常生活中各种表达自己观点和看法的方式。
2．学会简单的通过表面现象分析内在缘由, 并用现实的事例进行应证，初步掌握这种文体的写作技巧。
3. 通过35课的学习可以简单地描述一个完整的事件。
德育渗透
1．通过课文的学习，使得学生深层地了解地球环保这一重要主题, 让他们懂得地球环保不是一个和几个方面的事情, 而是随时随地, 方方面面, 彼此互相联系和沟通,并且影响着我们人类的生活的大问题。
2．通过对于环保的了解,使同学们的意识增强, 认识到环境污染的严重危害性和从自身做起保护环境的必要性。
师生互动活动
Lesson 33：口头练习：对话交际功能——日常生活用语(给出自己的观点和看法)。
Lesson 34：学生扮演新闻记者采访土壤沙化的当地的居民,印度的受伤的病人, 国家的环保机关的负责人询问有关课文的信息。另外可以让学生扮演俄罗斯的环保专家。
Lesson 35：学生扮演国家历史博物馆的讲解员同时其他学生可以作为参观者询问问题,了解某种动物的发展兴衰史。
Lesson 36：口头,笔头练习：讨论个别环保问题并汇报写出一篇小论文。
口语建议
可以让学生们就西北某一贫困林区毁林种庄稼的做法发表正反两方面的讨论，运用所学的口头的表达方式。
语法建议
可以让学生们将34和35课课文的有关过去分词作定语和表语的结构挑出，写在黑板上用学生找的现实的课文原例分析语法。
教材分析
从本单元的对话来看，主要是学习如何用英语表达出自己的观点和看法, 是同意还是不同意。如同意对方的观点: I think so. I agree completely. I’m with you. That’s a good idea---. I think it is great. 如果不同意: I don't know about that. I don’t think so. Sorry, but I disagree. I know what you mean, but don’t you think ---. I see your point, but I think ---. You’re right, but I think---.
同时注重 damage, pollute, desert, in place, limit, fit, present, pour, die out, measure, go off, point to, to one’s joy 等重点词汇和短语在本单元中学习，本单元中的阅读课主要内容是通过列举如:人为污染地球的土地,空气和水资源以及自然界对人类的报复; 动物界遭到人类的侵害,造成了生态不平衡等事例, 而达到警醒同学和世人,让同学们从小就培养一种环保意识, 维护环境生态的平衡。同时在这里运用了重点语法知识，Past Particle形式充当表语和定语的用法。
重点知识讲解
1. It was called “Saving the earth” and it was all about the damage that is being caused to the world.
1) It was called(believed, thought, considered, known, said ---) that --- 可以看成是主语从句，真正的主语后致，it是形式主语。可以翻译成：据说---, 据认为---。
It is believed that the troops have already crossed the border.
据说军队已经越过边境。
It is known that he is honest.( He is known to be honest.)
听说他是一个诚实的人。
1) damage
n. (不可数) 损坏，损害
The earthquake caused great damage.
地震造成巨大的损失。
When she sees the damage that you have done she will be mad.
当她看到你所造成的损失，她会发疯的。
vt. 损坏
A heavy rain came down and damaged the crops. 一场大雨突至，损坏了庄稼。
Her heart was slightly damaged as a result of her long illness.她长时间的疾病造成了她的心脏受到了轻微的损害。
2. We listen to lectures about pollution, agriculture, nuclear waste, radiation and so on.
waste
vt. 浪费
1) Mother told me not to waste money. 母亲不让我乱花钱。
2) Don’t waste time playing computer plays.不要浪费时间打电脑游戏。
waste something on something/in doing something 用法与spend类似，可以让学生记成“双费（浪费和花费）”。
n. (通常不可数) 浪费, 废物
1） This waste of good food should not be allowed. 浪费
生词表: