陕西省西安交大阳光中学高中英语 Unit 4 Astronomy the science of the stars words and expressions导学案（学生版）新人教版必修3(1).doc

unit4 astronomy: the science of the stars第 课时课题名称时间第 周 星期课型words and expressions主备课人 目标1.learn the useful words and expressions in this whole unit: astronomy system theory billion globe violent atmosphere unlike harmful chain multiply exist puzzle biology crash pull float mass solar system, in time, lay eggs, give birth to, in ones turn, preventfrom, cheer up, now that, 2. study the pronunciation of the key words. 3. preview the whole unit.重点to get familiar with the pronunciation and meaning of the key words and expressions 二次备课难点how to distinguish the pronunciation and the key words自主学习学习方法指导：第一步：写出所给单词的音标；第二步：大声朗读三遍，注意画线字母的发音；第三步：依次写出画线字母的音标。从单词表找出下列词汇的音标，并熟读。注意画线字母的发音。依次写出上面单词画线字母的音标：system theory violent exist puzzle pull float gentle climate multiply chain globe 问题生成记录： 精讲互动学习方法指导：第一步：从课本第17页到第24页找出下列字词的意义；第二步：在找出你所不会的字词或短语；第三步：小组讨论完成或向老师求助。warming up1. 天文学 _2.行星_3.宇航员_4.宗教_5.预测_6. 系统_1.太阳系_2. 生命的起源_3在地球上_reading1理论 _2 原子_3.十亿_4.地球_5.猛烈的_6.碳_7. 大气层_8. 基础的_9.酸_10 链条_11 氧气_ 12.存在_1. 以开始_2.及时_3和，又_4.生产_5.轮流_6.阻止做某事_using language11.太空船_2.拉 _3漂浮_4.质量，团_5.探索 _6.失重_1.欢呼_2既然，由于 _3.爆发 _词汇拓展：1.globe （形容词）_2.harm（形容词）_3.violent（名词）_4.biology (生物学家) _5.gentle （副词) _ 6.physics(物理学家) _7.confident（名词）_8.patient（名词）_9.religion(形容词) _10.unlike（反义词）_达标训练任务一：选出与所给词划线部分发音相同的单词。任务二：单词拼写1. there is too much (暴力) on tv.2. with the (发展) of economy, peoples living standards are higher now.3. every night he observes the space through a . （望远镜） .4. the illness is （传播） through the village.5. one cannot （生存） without air.6. you will (逐渐地) get used to the weather here.7. by the time they reached the top of the mountain, they were (筋疲力尽)8. there is a big underground railway (系统) in london, which is good for travelers.9. zhang heng was one of the most famous chinese （天文学家） in t