仁爱版九年级上册英语学案：Unit 2 Saving the Earth》2. All these problems are very serious（无答案）.doc

1、九年级英语导学案班级： 姓名： _ 组_ 号 导学案编号： 课题Topic 2 All these problems are very serious. SectionA课型听说课主备审核学习目标1学习新单词: sand, although, sandstorm, desert, human being, reduce, completely, change into, stop from, blow/ wash away, as a result等；2初步感知不定代词和不定副词的用法。3.通过课文的学习，了解沙尘暴形成的原因和过程，关注全球的环境问题。二、课前自学： 一读1a，找到下列必背短

2、语。 1.砍倒，砍伐 2.把变成 3.结果 4.阻止某人做某事 5. be harmful to 三、合作探究：探究一：People have cut down too many trees. As a result, a lot of rich land has changed into desert.人们砍了许多树，结果，大量肥沃的土地变成了荒漠。【归纳1】砍伐，砍倒_。cut的现在分词：_，过去式：_，过去分词：_。【链接】1）cut sth. in halves-把某物切成两半2）cut sth into pieces-把某物切成碎片【反馈训练】翻译：请把这个苹果切成两半。_【归纳2】

3、短语“结果”_；短语“变成” =turn into 【反馈训练】1. He got up late, _,(结果) he missed the early bus.2. Water has _（变成）steam. 水变成了蒸汽。 3. 请将这个句子翻译成英语。探究二： Trees can stop the wind from blowing the earth away. They can also stop the water from washing the earth away.【归纳】短语：阻止某人/某物做某事stop/prevent/keep sb./sth. from doing

4、sth.【归纳】短语：吹走：_；冲走 。( )1. We must _ the water from _ polluted.A. prevent, beB. prevent, beingC. prevent, tobeD. prevent, be done2.我们必须阻止这些孩子们在路上踢球。探究三：Although we have built “The Green Great Wall”, we still need to do something to protect the environment. 虽然我们修建了“绿色长城”，但我们仍然要采取措施来保护环境。【归纳】(although和

5、though一般用来引导 从句，但不能和but, however等连用。【反馈训练】尽管他们很穷，但却十分慷慨。They are generous _ they are poor.【归纳】(something是 代词，一般用于肯定句。【拓展】somebody, someone, something, somewhere一般用于_（肯定句/否定句/疑问句）；anybody, anyone, anything, anywhere一般用于_（肯定句/否定句/疑问句）；none, nobody, nothing, nowhere表示_（否定/肯定）含义。everybody, everyone, eve

6、rything, everywhere可用于各种句式。【链接】1. I have something important to tell you. 我有重要的事要告诉你。形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之_(前/后)；2. Everybody is ready for the match.不定代词作主语时，谓语动词要用_(单数/复数)。【归纳】(to protect the environment是动词不定式短语作_（目的/结果）状语。【反馈训练】我有许多作业要做。I have a lot of homework _.四、当堂典题训练：I. 根据汉语提示完成句子。 1.

7、人们砍下太多的树。People _ _ _ _ _ trees. 2.没有什么能阻止我们按时到校。 Nothing can _/ _ us _ _ to school on time. 3.水冲走了很多的土壤。Water _ the earth _. 4.大雨使我们无法外出。 5.虽然当时我觉得她错了，不过我什么也没说。_ I _ she was wrong at that time, I _ _.五、课后作业：单项选择。 ( )1. My hometown has changed _ a new one in the last three years.A. inB. toC. withD. into( )2. All the students have gone on a field trip. There is _ in the classroom.A. somebodyB. anybodyC. everybodyD. nobody( )3. Stoping smoking can the risk of heart diseases. A. causeB. reduceC. protectD. create