英语必修三第四单元课件.ppt

共 116 页1Unit 4Astronomy:the science of the stars共 116 页2第一课时Warming up&Reading共 116 页3vEach 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重点单词重点单词1astronomy n天文学天文学astronomer n天文学家天文学家2system n系统；体系；制度系统；体系；制度3theory n学说；理论学说；理论4.religion(n.)宗教，宗教信仰宗教，宗教信仰religious(adj.)宗教上的宗教上的5globe n球体；地球仪；地球球体；地球仪；地球global adj.全球性的；全全球性的；全世界的世界的6.violent adj.猛烈的；激烈的；强暴的猛烈的；激烈的；强暴的violence n暴力暴力violently adv.猛烈地猛烈地 共 116 页97.fundamental(adj.)基本的；基础的基本的；基础的8.atmosphere n大气层；气氛大气层；气氛9.unlike prep.不同；不像不同；不像dislike vt.不喜欢不喜欢10.presence n出席；到场；存在出席；到场；存在present adj.&n.&v在场的；目前，现在；出席；颁发，授予在场的；目前，现在；出席；颁发，授予11.harmful adj.有害的；伤害的有害的；伤害的harm n危害，害处危害，害处harmless adj.无害的无害的12chain(n.)链子；连锁；锁链链子；连锁；锁链共 116 页10vexactly 精确地，准确地，确切地 exact adj.eg.Your answer is exactly right.vhappen take place Great changes have taken place in my hometown in the last thirty years.共 116 页11uaccording to 根据，按照，据.所说 翻译：Everything went accoring to plan.u theory v a formal set of ideas that explain why sth.happens n.学说，理论u throw-threw-thrownv throw away 扔掉共 116 页12v direction 方向v matter 物质 事情，问题 拓展：as a matter of fact in fact actually共 116 页13vcombine.with.把.与.结合起来 翻译：They live happily because they combine their work with pleasure.vcreate creative creativity v.adj.n.创造 有创造力的 创造力 共 116 页14vbody 身体，躯干 天体vuncertain 不确定的 certain 确定的 certainly adv.vsettle into 安定下来，稳定下来 settle down 定居，安定下来共 116 页15vsolid 坚固的，结实的vglobe n球体；地球仪；地球球体；地球仪；地球global adj.全球性全球性的；全世界的的；全世界的共 116 页16u violent adj.猛烈的；激烈的；强暴的猛烈的；激烈的；强暴的violence n暴力暴力violently adv.猛烈地猛烈地uso.that.如此如此.以至于以至于.造句：他是如此的有趣以至于每个人都很喜欢他。共 116 页17vHe is so funny that everyone likes him very much.vit 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18vIt 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？vin time共 116 页20vatmosphere(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21vappear 出现v.appearance n.vdisappear 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22vunlike prep.不同；不像vWater had also appeared on other planets like Mars but,unlike the earth,it had disappeared later.v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。vIts unlike him to be late;hes usually on time.v他不是会迟到的那种人；他通常很准时。共 116 页23易易 错错 点点 拨拨自我完善自我完善误区备考误区备考1.unlike/dislike/alike/likely(1)unlike prep.不同；不像不同；不像(2)dislike vt.不喜欢不喜欢(3)alike adj.相似的，同样的相似的，同样的(4)likely adj.很可能发生的，有希望的很可能发生的，有希望的It is likely/unlikely that.有/没有可能.共 116 页24vfundamental 基础的，基本的v Hard work is fundamental to success.v勤奋工作是成功的基础。vdevelopment n.发展 develop v.developed（社会，国家）发达的 deloping 发展中的v造句：中国是一个发展中的国家共 116 页25vpresence n出席；到场；存在出席；到场；存在present adj.&n.&v在场的；目前，现在；出席颁发，在场的；目前，现在；出席；颁发，授予授予 at present 现在，目前现在，目前共 116 页26共 116 页27vchain n链子，连锁；锁链vThis produced a chain reaction，which made it possible for life to develop.v这就产生了一个连锁反应，使生命的发展成为可能。vHe is in a poor taste with a thick gold chain round his neck.v他戴着一条粗粗的金链子，显得俗气。共 116 页28重点短语重点短语1in time及时；终于及时；终于2according to 据据.所说；根据，按所说；根据，按照照bine.with.把把.与与.结合结合起来起来4.settle into 稳定下来稳定下来5.allow(permit)sb.to do sth.允许某人做某事允许某人做某事共 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302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313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324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33v5.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 that2.were in time to produce;were to make3.It was not immediately obvious that4.What many scientists believe is that5.Which made it possible for life to develop.共 116 页35HomeworkvRecite the wordsvRead the passage and analyze the four sentences 共 116 页36 Thank you for listening!