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1、Unit 2 Saving the earth.Topic 2 All these problems are very serious Section C讲学稿（无答案）模块一：温故知新学习内容翻译下列句子。1. 水对人类是非常重要的，但并不是每个人都知道如何保护和节约它。_2. 砍伐树木对人类、动植物都有害。_human beings,animals and plants模块二：自主学习 (独立进行）预时25分钟(Self-study & Self-exploration)学习内容摘 记Step 1 词汇学习-请将 P37-38的新单词在抄写本上每个抄写6遍，中文一遍。Step 2 短语学习
2、-请同学们在课本上找出下列短语，英汉互译。（要求：短语在课本上划出）the ozone layer _ carbon dioxide _The word it in the passage refers to _拿走；取走 _ _ 全世界_涉及；提到；指的是_ 温室效应 海平面_ Step 3 课文学习1、 理解课文P37-1a，并从短文上面的短语中为每段挑选出合适的题目，写在短文前的横线上。2、 再一次阅读短文1a，完成1b。Step 4 句型及词的用法学习-知识点归纳。4.1. Some things weve done are very good for the earth while
3、some are bad. 译: 【归纳】：1) weve done为定语从句，修饰_2) be good for 译为：_ 反义词组：_3）while在句中译为：_，相当于_，表示对比。如：Her sister likes reading while she likes singing. 她妹妹喜欢看书，而她喜欢唱歌。请观察下列句子中的while: While I was doing my homework, my mother was cooking. We are going away for a while. 归纳：句中的while 译为：_，作连词，常用来引导含有延续性动词的时间状语
4、从句。句中的while译为：_, 作名词。4.2. When it rains or when the wind blows, the earth is taken away. 译: 1）take away 译为：_2) take的现在分词：_ ；过去式：_ ；过去分词：_ 3)与take 有关的短语有很多，看看你能写出多少？脱下，(飞机)起飞_；把带到去_；轮流，替换_带某人去散步_；乘公共汽车_；照看_看一看_；拍照_ ；休息一下_ 坐下_4.3. The fewer trees, the better.译: 【归纳】表示“越，就越”的比较级句型结构写出来：_4.4. As a resul
5、t, many rivers and lakes are now dead. 结果，现在许多河流和湖泊已经没了生机。【归纳】be dead 意为“死的”，表示一种状态，这里指“无生气的，死气沉沉的”。【链接】死（v.）_； 死亡（n.）_； 死的(adj.) _；小组内成员互查完成情况并给予等级评定： 模块三：交流研讨 (小组交流、合作、展示)预时30分钟 (Cooperation ，Exploration &Show)研讨内容摘 记Step 5 听读（10）1. 播放P37-1a的短文，学生跟读1-2遍。Step 6合作 大组长组织，组员共同探讨下面研讨内容，并形成统一的组内意见；【研讨内容
6、】 讨论一：核对模块二Step 2 归纳本课时的重点短语或句型。讨论二：核对模块二 Step 3课文学习-选择合适的标题及根据1a完成1b。 小组齐读课文P37-1a 。讨论三：核对模块二 Step 4句型及词的用法学习-知识点归纳。讨论四：P38-2 写作训练O3，CO2 ，the greenhouse effect 分别是什么含义？_，_，_他们是怎样影响环境的。参考1a短文，请将你的答案写在课本上。Step 7 展示 【大组展示方案】展示任务一：讨论二，模块二 Step3课文学习-读P37-1a；建议：本组读，与其他组PK，要带动班级朗读气氛。还可以背诵PK等；展示任务二：讨论三，模块二
7、 Step 4句型及词的用法学习-知识点归纳。建议：将本组答案在白板上展示，并解释短文含义。展示任务三：讨论四：P38-2 写作训练。建议：将本组答案在白板上展示，然后读并解释出来。小组内成员互查完成情况并给予等级评定： 课堂评价要素：1、 合理评价组员，全员参与，有序展示；2、 书写规范，工整美观，双色笔运用得当；3、 发音清晰，声音洪亮；4、 面向全体，自然大方，肢体语言运用得当；展示生动活泼，独具特色。模块四：教师精讲（预时10分钟，认真听讲并记录要点）训练内容摘 记1. while 作连词及名词的用法；2. 写作。 教学反思：_模块五：当堂训练（预时20分钟）一、单项选择。( ) 1.
8、 _ down trees harms the living conditions of human beings.A. Cut B. Cuts C. Cutting D. To cut( ) 2. A terrible earthquake happened in Wenchuan caused many people _ their lives and homes.A. lose B. losing C. to lose D. lost( ) 3. _ your hand if you know the answer.A. Raise B. Give C. Rise D. Put( ) 4
9、.There are _ students on the playground, and five _ girls are in them.A.hundred; hundreds of B.hundreds of; hundred C.hundred; hundred D. hundreds of; hundreds( ) 5. As many factories have polluted the river, you can find _ fish on the water here and there.A. die B. death C. dead D. died( ) 6.The li
10、ttle girl was playing with a knife, so her father _ it _ from her. A. took; off B. took; away C. turned; off D. put; away( ) 7. - _ the soldiers are very tired, they keep on working. Theyre great. We must learn from them. A. Because B. If C. Although D. Before( ) 8. He prefers playing basketball _ s
11、he prefers playing computer games.A. so B. and C. while D. though( ) 9. You look so happy today! Mr. Wang says I am clever. _ has ever said that to me before.A. everybody B. somebody C. anybody D. nobody( ) 10. Summer is coming. The days are getting _.A. long and long B. long and longer C. more and more long D. longer and longer( ) 11. We plant _ trees in our city every year.A. the millions B. millions of C. million of D. million( ) 12. It was quite a heavy snow last night. Is everyone here now? Yes, and _ of us was late for sc
