1、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
2、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 难点 How to distinguish the pronunciation and the key words二次备课学习方
3、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 自主学习问题生成记录： 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、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
5、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 vil
6、lage.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 the world.10. The mammals (繁殖) when the animals, harmful to them,disappeared.成长资源词汇专练作业反思板书设计
