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高中英语 unit 4 astronomy the science of the stars period 1 warming up and reading优秀教案 新人教版必修3

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    • 1、Unit 4 Astronomy: the science of the stars 单元要览类别课程标准要求掌握的项目话题Science of the stars; the development of life; space travel and gravity词汇astronomyn. 天文学existvi. 存在; 生存systemn. 系统; 体系; 制度thusadv. 因此; 于是religionn. 宗教; 宗教信仰dioxiden. 二氧化物theoryn. 学说; 理论biologyn. 生物学atomn. 原子biologistn. 生物学家billionpron. & n. & adj. (英)万亿; (美)十亿puzzlen. 迷; 难题vt. & vi. (使)迷惑; (使)为难globen. 球体; 地球仪; 地球gravityn. 万有引力; 重力violentadj. 猛烈的; 激烈的; 强暴的floatvt. & vi. (使)浮动; (使)漂浮n. 漂浮物carbonn. 碳gentleadj. 温和的; 文雅的atmospheren. 大气层;

      2、气氛physicistn. 物理学家unlikeprep. 不同; 不像climaten. 气候fundamentaladj. 基本的; 基础的crashvt. & vi. 碰撞; 坠落harmfuladj. 有害的spaceshipn. 宇宙飞船acidn. 酸pulln. & vt. 拉; 拖; 牵引力chainn. 链子; 连锁; 锁链satelliten. 卫星; 人造卫星multiplyvt. & vi. 乘; 增加massn. 质量; 团; 块; 大量oxygenn. 氧exhaustvt. 用尽; 耗尽短语solar system太阳系block out挡住(光线)in time及时; 终于cheer up感到高兴; 感到振奋lay eggs下蛋now that既然give birth to产生; 分娩break out突发; 爆发in ones turn轮到某人; 接着watch out密切注视; 当心; 提防carbon dioxide二氧化碳prevent. . . from阻止; 制止重要句型1. What it was to become was uncerta

      3、in until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe. (be to do; what-clause as the subject)2. The earth became so violent that it was not clear whether the shape would last or not. (so. . . that; it is/was not+adj. +whether-clause)3. What is even more important is that as the earth cooled down, water began to appear on its surface. (what-clause as the subject; that-clause as the predicative)4. It was not immediately obvious that water was to be fundamental t

      4、o the development of life. it is/was (not)+adj. +that 5. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (whether-clause as the subject; depend on+whether-clause as the object)功能Instructions:Please pay attention to. . . Please check that. . . . You need. . .Dont forget to. . .Make sure that. . . .Watch out for. . .Youd better. . .You must/mustnt. . .Please look at. . .语法Noun clauses as the subjectWhat it was to become wa

      5、s uncertain. . . . . it was not clear whether the solid shape was to last or not.教学重点1. Get students to learn about the development of the earth and making a space trip.2. Have students learn some useful new words and expressions and let them learn effective ways to remember English vocabulary.3. Enable students to use the expressions of instructions correctly in daily life.4. Let students learn the new grammar item: noun clauses as the subject.5. Develop students listening, speaking, reading an

      6、d writing abilities.教学难点1. Enable students to master the use of noun clauses as the subject.2. Let students learn to write a short article to show their problems and the ways to overcome them.3. Develop students integrative skills.课时安排Periods needed: 7Period 1 Warming up and readingPeriod 2 Learning about language: Important language pointsPeriod 3 Learning about language: GrammarPeriod 4 Using language: Listening and speakingPeriod 5 Using language: Extensive readingPeriod 6 Using language: Spe

      7、aking and writingPeriod 7 Revision: Summing up and learning tipPeriod 1Warming up and reading整体设计教材分析This is the first teaching period of this unit. At the beginning of the class, the teacher can lead in the topic of the unit by having a free talk with students about some famous scientists and what they have discovered. Then turn to Warming Up. It is intended to have students think about and then discuss these two groups of questions:1. In our solar system eight planets circle around the sun. Wh

      8、at are they? Can you match the names with the planets?2. What interests you in astronomy? Do you know any questions that astronomers are interested in?Pre-reading is to remind students that the origin of life on the earth is a question that interests astronomers and each religion and culture has its own ideas about how life began on the earth. The teacher should ask students what they know about these and then let them predict what kind of information will be introduced in the next part Reading.

      9、The reading passage titled HOW LIFE BEGAN ON THE EARTH provides students a brief introduction on how the universe developed and how life began on the earth. It provides a scientific background to any investigation into space and it is factual. Students are encouraged to preview the text and find out the useful new words, expressions and structures themselves. They should try to work out the meanings of the new words through the context. Then if necessary, they can look them up in the dictionary or turn to the teacher for help. Also encourage them to look at the pictures and read the title to guess what the text might be about. Then let them skim for the general idea, and scan for further understanding. In

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