内蒙古巴彦淖尔市乌中旗二中九年级英语上册《Unit 2 Saving the Earth Topic 2 All these problems are very serious.Section C》学案（无答案） 仁爱湘教版.doc

九年级英语上册unit 2 saving the earth topic 2 all these problems are very serious.section c学案（无答案） 【学习目标】：（课前预习）1.熟记本节单词p37,p38及短语:2.让我帮你理解课文。1). 我们所做的一些事情对地球有益，然而有一些对地球却有负面影响。some things we _ _ are very _ _ the earth while some are bad.2). 下雨或刮风时，土壤被带走，森林变成了荒漠，因此越来越多种类的动植物正在灭绝。when it rains or when the _ _, the earth is _ _ forests _ _ deserts, so _ _ more _ _ animals and plants _ _. 3).大量来自太阳的有害射线穿过这个洞直接进入地球大气层。_ _ harmful _ _ the sun _ _ the hole and _ the earth _.4) 它会引起海平面的升高而且地球上的气候也会有变化。it causes _ _ _ the ocean _ _ and the _ _ the earth _ _.【重难点】：掌握不定代词的用法。【课堂活动】:一【预习检测】：1. 根据首字母及汉语提示完成句子。(1). the sun r_ in the east and sets in the west.(2). what do you think of the l_ of our living conditions ?- just so so. i hope it will be better.(3).tom is very tall w_ his father is very short.(4). have you ever heard of _ _ _ (温室效应)?(5). she has _ _ (带走) her book.(6). internet has changed our lives _ _ _ (在许多方面) 2.学生翻译下列句子，教师讲解。(1). but now air pollution is destroying it and that has made a very big hole in the ozone layer.(2).carbon dioxide (co2) in the air has increased a lot.(3). this has formed a blanket around the earth. (4). the heat from the sun cant escape so the temperature is rising. this is called “the greenhouse effect”.二【自主探究】:三【题组训练】: （一）单项选择1.there are many leaves on the ground. when the wind comes, the leaves will be _. a. taken up b. taken away c. taken to d. taken in 2. _ down trees harms the living conditions of human beings.a. cut b. cuts c. cutting d. to cut 3. she managed to escape _ the burning car. a. in b. from c. by d. to 4. 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 5. there are _ students on the ground, and five _ girls are in them.a. hundred; hundreds of b. hundreds of; hundredc. hundred; hundred d. hundreds of;