浙江专用2020版高考英语大一轮新优化复习Unit4Astronomythescienceofthestars课件新人教版必修3201901181131.ppt
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1、Unit 4 Astronomy:the science of the stars,-2-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,【识记阅读单词】 1.atom n. 原子 2.billion pron.锁链,-3-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,9.multiply vi.坠落 16.spaceship n. 宇宙飞船,-4-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,【拼写高频单词】 1. system n.系统;体系;制度 2. theory n.学说;理论 3. unlike prep.不同;不像
2、4. thus adv.因此;于是 5. puzzle n.谜;难题 vt.虔诚的,-5-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,3. violent adj.猛烈的;激烈的;强暴的 violently adv.强烈地 violence n.暴力 4. harmful adj.有害的 harm n.伤害;危害 harm vt.伤害;危害 harmless adj.无害的 5. exist vi.存在;生存 existence n.存在;生活(方式) 6. biology n.生物学 biologist n.生物学家 7. gentle adj.温和的;文雅的 gen
3、tly adv.轻轻地;温柔地,温和地 8. physicist n.物理学家 physics n.物理学 physical adj.物理的;物理学的 9. float vi.(使)漂浮 float n.漂浮物,-6-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,1.harmful和harm用法扫描 do harm to sb./do sb.harm 对某人有害 be harmful to sb./sth.对某人/某物有害 There is no harm in doing sth./It does no harm to do sth.做某事并无害处(反而可能带来某些好处
4、)。 2.“良好性格”的描写 gentle温和的 easy-going随和的 outgoing外向的 generous慷慨的,-7-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,3.“太空”单词集锦 astronomer n.天文学家 astronomy n.天文学 astronaut n.宇航员 satellite n.卫星 orbit n.轨道 universe n.宇宙 gravity n.万有引力 planet n.行星 spaceship n.宇宙飞船 atmosphere n.大气层,-8-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,4
5、.由thus想到的 therefore因此 however然而 still仍然 besides此外;而且 moreover 而且;此外 meanwhile同时,其间 otherwise否则;另外;在其他方面,-9-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,【识记】 1.solar system 太阳系 2.carbon dioxide 二氧化碳 3.lay eggs 下蛋 4.give birth to 产生;分娩 5.block out 挡住(光线) 6.get the hang of 精通;掌握 7.watch out for 密切注意;当心;提防 8.in al
6、l directions 向四面八方,-10-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,【默写】 1.及时;终于 in time 2.轮到某人;接着 in ones turn 3.阻止;制止 prevent.from 4.既然 now that 5.突发;爆发 break out 6.感到高兴;感到振奋 cheer up,-11-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,1.cheer常用短语 cheer on向欢呼,为鼓劲加油 cheer up(使)高兴起来,(使)振奋起来 Cheers!干杯! 2.“小心;当心”高频短语 be caref
7、ul小心 watch out for小心;当心 look out当心 take care小心,-12-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,3.birth用法小结 give birth to生,引起,产生 at birth在出生时 by birth在血统上 from birth自出生以来,-13-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,1.They were in time to produce carbon dioxide,nitrogen,water vapour and other gases,which were to make
8、 the earths atmosphere. 它们最终产生了二氧化碳、氮气、水蒸气和其他多种气体,从而形成了地球的大气层。 考点提炼be to do sth.“计划干某事,注定干某事”。 2.This produced a chain reaction,which made it possible for life to develop. 这就产生了一系列的反应,使得生命就有可能发展了。 考点提炼“make it+ adj.+for sb./sth.+to do sth.”结构中,it是形式宾语,代替不定式结构。,-14-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,3
9、.We watched,amazed as fire broke out on the outside of the spaceship as the earths gravity increased. 我们惊奇地看着,随着地球的引力增加,宇宙飞船的外层燃烧起火。 考点提炼第一个as引导时间状语从句,意为“当时候”;第二个as也引导时间状语从句,意为“随着”。,-15-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,1.约翰总是乐于帮助别人,这就注定了他会受欢迎。 John is always ready to help others,which is to make hi
10、m very popular. 2.他们团结协作,这就使得他们可能在三小时内完成这项工作。 They work together,which makes it possible for them to finish the work within three hours. 3.我一边写,笔一边颤抖。 My pen trembles as I write.,-16-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,No one 1. knows (know)exactly how the earth began.According to a 2. widely (wide)ac
11、cepted theory,the universe began with a “Big Bang”,3. which exploded loudly and produced water vapour and many 4. gases (gas)making the earths atmosphere.As the earth cooled down,water appeared and stayed 5. on the surface.It was the presence of water that allowed the earth to dissolve harmful gases
12、 and acids into the oceans and seas,which made 6. it possible for life to develop.First,the appearance of small plants encouraged the later development of early shellfish and all sorts of fish.Next,green plants began to grow on land,7. followed (follow)by land animals.So reptiles appeared for the fi
13、rst time.,-17-,.单词,.短语,.句式,.语篇填空,积累串记,联想归纳,仿造句子,Later,dinosaurs developed.However,they suddenly disappeared.After that,mammals came into being.Finally,humans 8. appeared (appear)and spread all over the earth.However,they are putting too much carbon dioxide into the atmosphere,9. making (make)the ear
14、th too hot to live on.So,whether life will continue on the earth for millions of years to come will depend on 10. whether this problem can be solved.,-18-,核心词汇,核心句式,2,3,4,5,6,1,7,1.in time及时;迟早;总有一天 【教材原句】They were in time to produce carbon dioxide,nitrogen,water vapour and other gases,which were to
15、 make the earths atmosphere. 最终产生了二氧化碳,氮气,水蒸气和其他多种气体,从而形成了地球的大气层。 领悟高考究考法 用in time或on time填空 (1)If you cant arrive there on time,you should warn them. 如果你不能按时到达,应该预先通知他们。 (2)Im just so glad I was there in time to help my son.(2018全国,完形填空) 我很高兴我能及时赶到那里帮助我的儿子。,-19-,核心词汇,核心句式,2,3,4,5,6,1,7,单句写作 (3)如果坚持
16、下去,总有一天你会成功的。 If you keep on,you will succeed in time. 联想拓展记考点 (1)at times 有时;偶尔;不时 (2)on time准时;按时 (3)in no time 立即;马上 (4)at one time 曾经;一度 (5)at no time 从不;决不 (6)all the time 一直;始终 (7)at a time 一次;每次,-20-,核心词汇,核心句式,2,3,4,5,6,1,7,2.exist vi.存在,生存 【教材原句】They laid eggs too and existed on the earth fo
17、r more than 140 million years. 他们也生蛋,在地球上生存了一亿四千多万年。 派生existence n.存在,生存 existent adj.存在的,现存的 领悟高考究考法 翻译句子 (1)It exists in milk in great amount.(2016四川,阅读理解D) 它大量存在于牛奶中。 (2)Jet airplanes and big trucks didnt exist yet.(2016北京,完形填空) 然而,喷气式飞机和大卡车还不存在。,-21-,核心词汇,核心句式,2,3,4,5,6,1,7,用exist的适当形式填空 (3)Ther
18、e exist different opinions on this question. 对于这个问题存在着不同的意见。 (4)The change endangers the very existence of certain animals and birds. 这种变化威胁到了某些动物和鸟的生存。 (5)If people had normal lives,these cafes wouldnt exist . 如果人们过正常的生活,这些咖啡店就不会存在。 联想拓展记考点 (1)There exists/existed.某地存在有 (2)exist on靠为生 (3)come into
19、existence开始存在,成立 (4)bring.into existence 使发生,产生,-22-,核心词汇,核心句式,2,3,4,5,6,1,7,3.in ones turn轮到某人;接着 【教材原句】Thus they have,in their turn,become the most important animals on the planet. 于是,他们接着成为了这个行星上最重要的动物。 领悟高考究考法 完成句子 (1)When its in my turn ,Im too excited to speak. 当轮到我时,我太兴奋以至于讲不出话来了。 (2)He cooke
20、d the meal in his turn this week. 本周轮到他做饭了。,-23-,核心词汇,核心句式,2,3,4,5,6,1,7,联想拓展记考点 (1)in turn 轮流地;挨个;依次;反过来 (2)out of turn 不依顺序地 (3)take turns 依次;轮班;轮流 (4)by turns 轮流地;交替地,-24-,核心词汇,核心句式,2,3,4,5,6,1,7,4.prevent.from doing sth.阻止做某事 【教材原句】They are putting too much carbon dioxide into the atmosphere,whi
21、ch prevents heat from escaping from the earth into space.他们把过多的二氧化碳排放到大气层中,这使得地球上的热量不能释放到太空中去。 领悟高考究考法 介词填空或用所给词的适当形式填空 (1)If you like,a squeeze of fresh lemon juice on the bananas will prevent them from turning brown.(2018全国,阅读理解B) 如果你喜欢,往香蕉上滴新鲜的柠檬汁可以防止香蕉变成褐色。 (2)Sure,I could have asked her,but som
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