课 时 教 案授课时间：第 周 年 月 日课 题Unit 4 Astronomy --The science of the stars 教 学 目 标Teaching aim: go over this unit to master the usage of words; phrases and sentences patterns of this unit.教 学 重 点Important points: Grammar filling教 学 难 点Difficult points: Basic writing教 学方 法Summary；Exercises；Consolidation教 具Book III ； Blackboard；PPT；教 学时 数Three Periods: (two periods for key points, one period for exercise)教学过程Teaching steps: Step 1 Word study一、单词拼写 根据词性和词义写出下列单词。1.___________ n. 天文学家 2.___________ n. 大气层3.___________ adj. 猛烈的 4.___________ vt.&vi. 使爆发5.___________ n. 系统 6.___________ adj. 有害的7.____________ n. 发展 8.__________ adj. 全球性的9.___________ vi. 依靠 10.__________ vi. 存在11._____________ n. 出席 12._____________ adj. 失望的13._____________ adv. 逐渐地 14._____________ n. 重力15._____________ vt. 减少 16._____________ n. 质量17._____________ vt.&vi. 使高兴 18._____________ n. 方法19._____________ adv. 一般地 20._____________ vt. 耗尽二、单词运用 根据句子的结构和意义，在空格处填入一个适当的单词，或者用括号中所给词的适当形式填空。 1. As a young man he didn’t know he was ________ world fame later on. (win)2. Most parents don’t allow their children ___ because it does harm to health. (smoke )3. he sent me a gift made me happy .4. he sent me made me happy .5. It is a surprise Pluto is no longer considered a planet in our solar system.教学过程6. A great dust cloud formed in the sky out the sunlight. ( block)7. The universe began a “Big Bang” that threw matter in all directions.8. As for me, you can pass the exam _______on whether you will work harder than before .9. Zhang Ming as well as I the members of the foot team .both of us are of p...
