广东省河源中国教育学会中英文实验学校2020届九年级英语上册《Unit 2 Saving the earth Topic 2 All these problems are very serious（第3课时）》讲学稿（无答案）（新版）仁爱版（通用）

All these problems are very serious学习目标：1. 掌握本课的重点词汇和短语：hole, form, rise, oxygen, ozone layer, radiation, directly, carbon dioxide, blanket, escape, the greenhouse effect, refer，during this period, take away, pass through2. 能读懂有关环境问题的文章，进一步学习各种污染对地球造成的危害和造成这些污染的原因。第一段：【短课导学】 模块一：自主学习学习内容摘 记Step1. Leading1.What can we do to protect our environment ? 2.Watch the cartoon video about protecting the ozone layer and discuss what they have learnt from it. Step 2. 初读-感悟课文一、Read P39-1a and underline the following phrases and sentences.(在课本上划出下列内容，并归纳短语及结构)1.during this period 在这期间 2. Some things we have done are very good for the earth while others are bad. 我们做的事情一些对地球有益，而另一些是有害的。(表达“对有益”：_；反义词组“对有害”：_)3.all over the world 全世界（=_/_） 4. the wind blows.刮风 5the earth is taken away. 土会被带走6. So many kinds of animals and plants are disappearing. 因此很多种类的动植物都正在消失。7. As a result, many rivers and lakes are now dead. 因此很多河流和湖泊都成了死河和死湖。(be dead 死的，表示一种状态，这里指，“死气沉沉的，无生气的”。请写出“死”相关词性的单词：(动词)死_；(名词)死亡_；(形容词)死的_)8. around the earth 在地球周围9. too much harmful radiation from the sun 太阳散发出的很多有害射线 10. pass through通过 11. This has formed a blanket around the earth. 这已经在地球周围形成了一个“毯子”。12. the greenhouse effect 温室效应 the level of the oceans 海平面 the climate of the earth 地球的气温 13.(P40-1b) refer to 谈及，说起二、Read 1a again and finish 1b. (7分钟限时阅读)Step 3. 精读-理解课文一、 Read 1a the third time, then complete the notes. Finish 2c.二、Listen to 1a and read after it.三、语言点梳理：3.1.请看：Some things weve done are very good for the earth while some are bad. 我们做的一些事情对地球有益，而另一些对地球是有害的。【归纳】1)while 在这里作并列连词，表示对比，意为“_”。【链接】2)While I was doing my homework, my mother was cooking. 我做作业时，妈妈在做饭。【归纳】3)while在此句中作从属连词，意为“_”，常用 来引导含有延续性动词的时间状语从句，表示一个动作在进行的同时，另一个动作也在发生。【练一练】( ) 4.1. He prefers playing basketball _ she prefers playing computer games.A. so B. and C. while D. though3.2. When it rains or when the wind blows, the earth is taken away. 当刮风下雨时，土就被刮走或冲走。【归纳】1）take away 译为：_2) take的现在分词：_ ；过去式：_ ；过去分词：_ 此句中，is taken away，表达的是一种被动，“被刮走”。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_3.3. It causes the level of the oceans to rise. 它使海平面上升。【链接】The sun rises in the east. 太阳从东方升起。 She raised her hand. 她举起了手。【归纳】表示“某人/某物从低处上升到高处”是：_；表示“主语发出”抬、举”的动作，作用于其他事物上”的是： _；rise -_（过去式）-_(过去分词)（可查阅P147）【练一练】选词并用其适当形式填空。3.3.1. She_from his chair. (rise, raise) Peter _ his empty glass. 第二段：【长课导学】 模块二：交流研讨研讨内容摘 记内容一：小组成员核对课本1b,1c的内容填空及语言点梳理，将不懂的内容提出来。模块三：巩固内化学习任务任务一：熟读P39-1a; 熟记本课时短语和句型。1)“对有益”：_； “对有害”：_2)全世界_=_3) (动词)死_；(名词)死亡_；(形容词)死的_4)通过_ 5) 谈及，说起_ 6)带走_7)刮风_ 8)温室效应_Unit2 Topic 2 All these problems are very serious. Section C P 39-40 第3课时授课时间：第7周 姓名 模块四：当堂训练老师的话：复杂的事情简单做，简单的事情认真做，认真做的事情重复做，重复做的事情创造性做！一时专一事，做最好的自己，你一定成功！一、单项选择。( ) 1. _ 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.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 .He is tall, _his son is short.A. so B. and C. while D. though( )7. My mother was cooking while I _ the radio. A. listened to B. have listened to C. was listening to D. is listening to二、 从方框中选择合适的单词或短语，用其适当形式填空。refer to, form , hole, rise, take away1. Who has _ my dictiona