英语必修三第四单元.ppt

《英语必修三第四单元.ppt》由会员分享，可在线阅读，更多相关《英语必修三第四单元.ppt（36页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Unit 4Astronomy:the science of the stars1共 116 页第一课时Warming up&Reading2共 116 页vEach religion and culture has its own ideas about how life began on earth.What do you know about them?3共 116 页4共 116 页5共 116 页6共 116 页7共 116 页重点重点单词单词1astronomy n天文学天文学astronomer n天文学家天文学家2system n系系统统；体系；制度；体系；制度3theory

2、n学学说说；理；理论论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；地球球体；地球仪仪；地球；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；猛烈的；激烈的；强强暴的暴的violence n暴力暴力violently adv.猛烈地猛烈地 8共 116 页7.fundamental(adj.)基本的；基基本的；基础础的的8.atmosphere n大气大气层层；气氛；气氛9.unlike prep.不同；不像不同；不像dislike vt.不喜不喜欢欢10.p

3、resence n出席；到出席；到场场；存在；存在present adj.&n.&v在在场场的；目前，的；目前，现现在；出席；在；出席；颁发颁发，授予，授予11.harmful adj.有害的；有害的；伤伤害的害的harm n危害，害危害，害处处harmless adj.无害的无害的12chain(n.)链链子；子；连锁连锁；锁链锁链9共 116 页vexactly 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 homet

4、own in the last thirty years.10共 116 页uaccording to 根据，按照，据.所说 翻译：Everything went accoring to plan.u theory a formal set of ideas that explain why sth.happens n.学说，理论u throw-threw-thrown throw away 扔掉11共 116 页v direction 方向v matter 物质 事情，问题 拓展：as a matter of fact in fact actually12共 116 页vcombine.wi

5、th.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 13共 116 页vbody 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14共 116 页vsolid 坚固的，结实的vglobe n球体；地球球体；地球仪仪；地球；地球global adj.全球性全球

6、性的；全世界的的；全世界的15共 116 页u violent adj.猛烈的；激烈的；猛烈的；激烈的；强强暴的暴的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。16共 116 页vHe 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17共 116 页vIt is not clear whether he will come or

7、not.18共 116 页 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 time19共 116 页vatmosphere(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 atmosp

8、here changed as soon as she walked in.她一进来气氛就变了。20共 116 页vappear 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)21共 116 页vunlike prep.不同；不像vWater had also appeared on other plane

9、ts 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。22共 116 页易易 错错 点点 拨拨自我完善自我完善误误区区备备考考1.unlike/dislike/alike/likely(1)unlike prep.不同；不像不同；不像(2)dislike vt.不喜不喜欢欢(3)alike adj.相似的，同相似的，同样样的的(4)

10、likely adj.很可能很可能发发生的，有希望的生的，有希望的It is likely/unlikely that.有/没有可能.23共 116 页vfundamental 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24共 116 页vpresence n出席；到出席；到场场；存在；存在present adj.&n.&v在在场场的；目前，的；目前，现现在；出席；在；出席

11、；颁发颁发，授予授予 at present 现现在，目前在，目前25共 116 页26共 116 页vchain 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。27共 116 页重点短重点短语语1in time及及时时；终终于于2according to 据据.所所说说

12、；根据，按照；根据，按照bine.with.把把.与与.结结合起来合起来4.settle into 稳稳定下来定下来5.allow(permit)sb.to do sth.允允许许某人做某事某人做某事28共 116 页.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)29共 116 页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,

13、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)30共 116 页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)31共 116 页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 p

14、resence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.32共 116 页v5.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。33共 116 页答案：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.34共 116 页HomeworkvRecite the wordsvRead the passage and analyze the four sentences 35共 116 页 Thank you for listening!36共 116 页