英语必修三第四单元课件.ppt

共 116 页,1,Unit 4 Astronomy: the science of the stars,共 116 页,2,第一课时 Warming up & Reading,共 116 页,3,Each religion and culture has its own ideas about how life began on earth. What do you know about them?,共 116 页,4,共 116 页,5,共 116 页,6,共 116 页,7,共 116 页,8,重点单词 1astronomy n天文学astronomer n天文学家 2system n系统；体系；制度 3theory n学说；理论 4. religion(n.)宗教，宗教信仰religious(adj.)宗教上的 5globe n球体；地球仪；地球global adj.全球性的；全世界的 6. violent adj.猛烈的；激烈的；强暴的violence n暴力violently adv.猛烈地,共 116 页,9,7. fundamental(adj.)基本的；基础的 8. atmosphere n大气层；气氛 9. unlike prep.不同；不像dislike vt.不喜欢 10.presence n出席；到场；存在present adj. & n. & v在场的；目前，现在；出席；颁发，授予 11. harmful adj.有害的；伤害的harm n危害，害处harmless adj.无害的 12chain(n.)链子；连锁；锁链,共 116 页,10,exactly 精确地，准确地，确切地 exact adj. eg. Your answer is exactly right. happen take place Great changes have taken place in my hometown in the last thirty years.,共 116 页,11,according to 根据，按照，据所说 翻译：Everything went accoring to plan.,theory a formal set of ideas that explain why sth. happens n. 学说，理论 throw-threw-thrown throw away 扔掉,共 116 页,12,direction 方向 matter 物质 事情，问题 拓展： as a matter of fact in fact actually,共 116 页,13,combine .with .把与结合起来 翻译：They live happily because they combine their work with pleasure.,create creative creativity v. adj. n. 创造 有创造力的 创造力,共 116 页,14,body 身体，躯干 天体 uncertain 不确定的 certain 确定的 certainly adv. settle into 安定下来，稳定下来 settle down 定居，安定下来,共 116 页,15,solid 坚固的，结实的 globe n球体；地球仪；地球global adj.全球性的；全世界的,共 116 页,16,violent adj.猛烈的；激烈的；强暴的violence n暴力violently adv.猛烈地 so .that. 如此以至于 造句：他是如此的有趣以至于每个人都很喜欢他。,共 116 页,17,He is so funny that everyone likes him very much. it is not clear whether .or not 还不确定, 还不清楚 句子仿写： 他要不要来还不确定,共 116 页,18,It is not clear whether he will come or not.,共 116 页,19,来得及；及时 If you catch the early bus, youll get there in time. 如果你赶上早班车，你会及时到达那儿的。 Will we be in time for the six oclock train? 我们来得及赶上六点钟的那趟火车吗？,in time,共 116 页,20,atmosphere (n.) (1)(围绕地球的)大气；大气层；大气圈 (2)C(房间、封闭空间或某处的)空气 These plants love warm, humid atmosphere. 这些植物喜欢温暖潮湿的空气。 (3)C & U 气氛； 氛围 The atmosphere changed as soon as she walked in. 她一进来气氛就变了。,共 116 页,21,appear 出现v. appearance n. disappear 消失v. disappearance n 知识点回顾：The fact is that I earned my passage by working as an unpaid hand, which accounts for my appearance.( unit 3, page 18),共 116 页,22,unlike prep.不同；不像 Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. 在火星等其他行星上也出现了水，但不像在地球上一样，这些水后来消失了。 Its unlike him to be late; hes usually on time. 他不是会迟到的那种人；他通常很准时。,共 116 页,23,易 错 点 拨 自我完善误区备考 1. unlike/dislike/alike/likely (1)unlike prep.不同；不像 (2)dislike vt. 不喜欢 (3)alike adj. 相似的，同样的 (4)likely adj. 很可能发生的，有希望的,It is likely/unlikely that.有/没有可能,共 116 页,24,fundamental 基础的，基本的 Hard work is fundamental to success. 勤奋工作是成功的基础。 development n. 发展 develop v. developed （社会，国家）发达的 deloping 发展中的 造句：中国是一个发展中的国家,共 116 页,25,presence n出席；到场；存在present adj. & n. & v在场的；目前，现在；出席；颁发，授予 at present 现在，目前,共 116 页,26,共 116 页,27,chain n链子，连锁；锁链 This produced a chain reaction，which made it possible for life to develop. 这就产生了一个连锁反应，使生命的发展成为可能。 He is in a poor taste with a thick gold chain round his neck. 他戴着一条粗粗的金链子，显得俗气。,共 116 页,28,重点短语 1in time 及时；终于 2according to 据所说；根据，按照 3. combine .with. 把与结合起来 4. settle into 稳定下来 5. allow(permit) sb. to do sth. 允许某人做某事,共 116 页,29,.完成句子 1地球变得激烈动荡，不知道这个固体形状是否会继续存在下去。 The earth became_ it was not clear whether the shape would last or not. (so. that.如此以至于),共 116 页,30,2喷出的烈火与岩石及时产生了碳、氮气、水蒸气和其他气体，从而形成了地球的大气层。 They_ carbon, nitrogen, water vapour and other gases, which _ the earths atmosphere. (be in time to do sth.及时做某事；be to do sth.常用来表示不可避免将要发生的事情),共 116 页,31,3水对于生命的发展起关键作用，这一点在当时并不明显。 _water was to be fundamental to the development of life. (It is obvious that.很明显),共 116 页,32,4很多科学家相信，由于地球上长期有水存在，使地球得以把有害气体和酸性物质溶解在海洋里。 _the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.,共 116 页,33,5. This produced a chain reaction, which _. 这就产生了一系列的反应，使得生命的发展成为可能。,共 116 页,34,答案： 1.so violent that 2.were in time to produce; were to make 3.It was not immediately obvio