2017届高考英语（全国卷地区）一轮总复习课件：必修3 Unit 4《Astronomy the science of the stars》

　　◇ 短语储存 ◇ 1

　　in time　(sooner or later)迟早；(eventually)最后；(early or soon enough) 及时

　　on time

　　准时

　　all the time

　　一直，始终

　　at one time

　　曾经，一度

　　at a time

　　每次，逐一

　　from time to time

　　有时，偶尔

　　in no time

　　立刻，马上

　　at times

　　有时

　　【温馨提示】in time 后可接for sth/to do sth 的形式，意为“做某事及时/来得及”。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2017·四川卷·阅读B] We arrived in the summer, just

　　in time to enjoy the midnight sun. 我们是夏季到的，正好赶上欣赏子夜的太阳。(及时)

　　(2)He was involved in a murder and in time they would

　　pick him up.

　　他参与了一起谋杀案，迟早他们会找到他并将他逮捕。 (迟早)

　　Unit 4　Astronomy: the science of the stars 返回目录 考 点 互 动 探 究 (3)It sounds as if you are getting treatment, and I hope

　　that some mixture of drugs and cognitive behaviour

　　therapy will help in time. 听起来你好像正在接受治疗，我希望药物加上认知行 为疗法最终能帮到你。(最终) (4)用time的相关短语填空。

　　①If you keep on, you'll succeed ____________．

　　②The car came to a stop just ____________ to prevent an accident.

　　③____________， half the land on the earth's surface

　　was covered by the forest.

　　④We'll have had the leak fixed______________． Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 in time in time At one time in no time 返回目录 2　in one's turn　

　　轮到某人；接着

　　in turn

　　依次；轮流；反之；反过来

　　by turns

　　轮流；交替地

　　take turns to do sth

　　轮流做某事

　　It is one’s turn to do sth.

　　轮到某人做某事。

　　It turns/turned out that… 结果是…… Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)Mr Franklin seemed to be as helpless as his cousin

　　when he heard the news in his turn.

　　当弗兰克林先生听到这个消息时，他也像他的表哥一样一筹莫展。 (2)It was my turn ________(recite). How I wish I had

　　been able to say the rules without a mistake!

　　轮到我背诵了，我多么希望我能够一点也不错地把那些规则说出来啊！ Unit 4　Astronomy: the science of the stars to recite 考 点 互 动 探 究 返回目录 (3)The young parents had to __________ to look after

　　their sick baby.

　　这对年轻的父母不得不轮流照看着他们生病的婴儿。 (4)The change of the climate

　　makes the earth warmer.

　　__________， the warmth of the earth changes the

　　climate, too.

　　气候的变化导致全球气温升高，反之，地球的升温也在改变气候。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 take turns　 in turn 返回目录 ◇ 句型透视 ◇ 1

　　But when I tried to step forward, I found I was carried twice as far as on the earth and fell over.但当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。

　　句型公式　

　　…倍数＋as＋形容词/副词＋as… Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【句式点拨】

　　该句型表示“……是……的几倍”，该句型也可用half, one fourth等词，表示“……是……的一半/四分之一等”。 常见的倍数的表达方式有： (1)倍数＋as＋形容词/副词原级＋as… (2)倍数＋形容词/副词比较级＋than… (3)倍数＋the size/height/weight/depth/…＋of… (4)倍数＋as many/much＋名词＋as… Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)The new stadium being built for the next Asian Games will be

　　＝three times as big as the present one.

　　＝three times bigger than the present one.

　　＝three times the size of the present one.

　　正在为下届亚运会而建设的新体育场将是目前这个育场的三倍。 (2)The gravity on the surface of Mars is about

　　____________________ as it is on the earth. (strong)

　　火星表面的引力大约是地球表面引力的三分之一。 Unit 4　Astronomy: the science of the stars one third as strong 考 点 互 动 探 究 返回目录 (3)Kenya, a land more than ________________ Britain,

　　is everywhere parched. (size)

　　肯尼亚，一个面积是英国两倍多的地方，四处干旱炎热。 (4)It is reported that the United States uses

　　____________________ the whole of Europe.(much，as)

　　据报道，美国使用的能源是整个欧洲的两倍多。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 twice the size of twice as much energy as 返回目录 This produced a chain reaction, which made it possible for life to develop. 　这引起了连锁反应，为生命的发展提供了可能。

　　句型公式　

　　make it possible…使……成为可能

　　【句式点拨】

　　本句是“make it＋形容词/名词＋ to do sth”句型。其中it为形式宾语，指代后面的不定式结构。it作形式宾语，除指代不定式结构外，还可指代that引导的宾语从句。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)The issue of fair and equal education has aroused

　　widespread concern, which makes it possible for more

　　students from less­developed areas to be enrolled in

　　universities.

　　教育的公平问题引起了大家的广泛关注，这使得更多来

　　自不发达地区的学生有可能上大学。 (2)People in the West make it a rule to buy Christmas

　　presents for their relatives and friends.

　　在西方，人们常在圣诞节时购买礼物给他们的亲属和朋

　　友。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 (3)[2015·广东卷·阅读C] Traditional wisdom also has

　　_____ that heavy television­watching lowers IQ(智商)

　　scores and affects school performance.

　　传统的观点也认为看电视过多会降低智商得分并影

　　响在校的表现。   Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 it 返回目录 Ⅰ.单句填空 1．Now there's a system _______the waste is disposed of using the principles of ecology. 2．During those four years, he worked day and night, thus__________(improve)

　　his theory gradually until it was complete. 3．Sometimes he found _____very hard to fall asleep at night, so he went to see the doctor. 4．What makes me _________(puzzle) is why he left the country without telling anyone. Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 where improving it puzzled 返回目录 5．Formaldehyde(甲醛) is used in the building materials, which is as _________(harm)

　　a chemical to our health as melamine(三聚氰胺)． 6．_______we should work out a plan to deal with the present serious situation is important. 7．She strongly objected to my mother's marriage. Surprisingly, my mother's reaction ______ it was rather calm. 8．The argument remains extremely heated on whether there are necessary conditions of __________(exist)

　　such as water on Mars. Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 harmful That to existence 返回目录 9．“I begin to feel the ground beneath me shaking and then I feel the whole entire building is _________(violent) rocking around，” she said. 10．What we believed firmly was that dangerous areas did

　　not prevent him from __________(continue) his search. Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 violently continuing 返回目录 Ⅱ.单句改错

　　1．The school has developed an online system which

　　students can choose their own teachers. 　

　　_______________________________________________

　　2．Apes have flexible hands much like ours but unlike that of

　　any other creature.

　　_______________________________________________ Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 which前加in或which 改为where that改为those 返回目录 3．That he considered a great proposal was turned down by

　　the boss at the meeting.

　　_______________________________________________

　　4．Whenever I get in trouble,

　　my father always encourages

　　me, “Don't worry, my girl. I'm sure everything will get

　　better on time.”

　　_______________________________________________

　　Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 That改为What on改为in 返回目录 5．The new bridge is three times width of that one built last

　　year.

　　_______________________________________________

　　　 6．Tired as I was, in fact, I was prevented sleeping by the

　　pain in my knee.

　　_______________________________________________

　　Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 width 前加the prevented 后加from 返回目录 7．We hope the new machine will work faster, instead

　　reducing our costs. 　

　　_______________________________________________ 8．When people in the room heard someone crying “Fire!

　　Fire！” they were seized by panic and began to run

　　towards all directions.

　　_______________________________________________ Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 instead改为thus towards 改为in 返回目录 9．Teachers can help them learn to take risks in an

　　atmosphere that they feel confident about doing so.

　　_______________________________________________ 10．Because there is no air or wind on the moon, the

　　footprints may stay there for million of years.

　　_______________________________________________

　　Unit 4　Astronomy: the science of the stars 步 步 跟 踪 验 收 that改为where million改为millions 返回目录 Unit 4　Astronomy: the science of the stars 基 础 自 主 梳 理 考 点 互 动 探 究 步 步 跟 踪 验 收 佳 作 晨 读 赏 析 返回目录 Unit 4　Astronomy: the science of the stars

　　你接受了一项写作任务，要为英语校报写一篇有关 UFO的文章。

　　请根据以下信息，简要介绍UFO。 佳 作 晨 读 赏 析 返回目录 Unit 4　Astronomy: the science of the stars

　　佳 作 晨 读 赏 析 名称简介 UFO是Unidentified Flying Object 的缩写 世界十大未解之谜之一 有关事件 首次目击报告是在1878年的美国 从那以后目击报告层出不穷，有许多是虚假的

　　人们的看法 来自其他行星的太空飞船 来自其他行星的太空飞船 外星人

　　研究状况 三分之一的国家对UFO展开研究 大量关于UFO的图书和期刊出版 有些大学开设UFO课程 外星人 alien

　　返回目录 ——

　　精 彩 美 文

　　——

　　UFO, which is short for Unidentified Flying Object, has long been regarded as one of the top 10 unsolved mysteries in the world. The first UFO sighting was reported to have happened in America in 1878. Since then, numerous sightings have been reported all over the world, many of which turned out to be false. Unit 4　Astronomy: the science of the stars 佳 作 晨 读 赏 析 返回目录 Some people think UFOs are spaceships from other planets, others believe that they're just a kind of natural phenomenon and still others guess they're aliens. Now about one third of the countries in the world are doing research on UFOs, about which many books and journals have been published, and in some universities courses are even set up to study UFOs. Unit 4　Astronomy: the science of the stars 佳 作 晨 读 赏 析 返回目录 ——

　　名 师 点 睛

　　——

　　1．文章体裁：说明文。

　　2．行文逻辑：介绍UFO→人们的看法→研究状况。

　　3．词汇短语：运用了较高级的词汇和短语。如：be short for(是……的简称)，be regarded as(被认为是……)，turn out(结果……)，set up(建立，成立)等。 Unit 4　Astronomy: the science of the stars 佳 作 晨 读 赏 析 返回目录

　　4．句式句法：运用了多样化的句式结构。如：①定语从句：which is short for Unidentified Flying Object, many of which turned out to be false, about which many books and journals have been published；②宾语从句：that they're just a kind of natural phenomenon and still others guess they're aliens等。 Unit 4　Astronomy: the science of the stars 佳 作 晨 读 赏 析 返回目录 Ⅰ.单词荟萃 1．________n．天文学→__________n．天文学家 2．________n．生物学→________n．生物学家→biological adj.生物学的 3．________n．物理学家→________adj.物理学的→________n．物理，物理学 4．________vi.存在→________n．存在 5．________ vt.使……迷惑 n．难题；谜→________adj.迷惑不解的 Unit 4　Astronomy: the science of the stars astronomy biology biologist physicist physics exist existence puzzled astronomer physical puzzle 基 础 自 主 梳 理 返回目录 6．________adj.猛烈的→________n．暴力→________ adv.猛烈地 7．________adj.有害的→________n．害处 vt.对……有害 8．________ n．球体；地球仪→________adj.全世界的；全球性的 9．________prep.不像；和……不同→________(反义

　　词)prep. →________v. & n．不喜欢 10．________n．质量；团；块；大量→________ (pl.)群众 Unit 4　Astronomy: the science of the stars violence globe unlike violently violent harmful harm global 基 础 自 主 梳 理 like dislike mass masses 返回目录 Ⅱ.短语检测 1．下蛋

　　__________________ 2．密切注视；当心；提防

　　__________________ 3．既然

　　__________________ 4．产生；分娩

　　__________________ 5．及时；终于

　　__________________ 6．阻止；制止

　　__________________ 7．感到高兴；感到振奋

　　__________________ 8．突发；爆发

　　__________________ 9．挡住(光线)

　　__________________ 10．轮到某人

　　___________________ Unit 4　Astronomy: the science of the stars lay eggs watch out for now that give birth to in time prevent…from cheer up break out

　　基 础 自 主 梳 理 block out in one's turn 返回目录 Ⅲ.佳句再现 1．The earth became ________________it was not clear whether the shape would last or not.

　　地球变得激烈动荡， 不知道这个形状是否会继续保持下去。 2．This produced a chain reaction，________ made it

　　possible for life to develop.

　　这引起了连锁反应，为生命的发展提供了可能。 Unit 4　Astronomy: the science of the stars so violent that which 基 础 自 主 梳 理 返回目录 3．But when I tried to step forward, I found I was carried ________________ on the earth and fell over.

　　但当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。 4．So _________ life will continue on the earth for millions of years to come ______________ whether this problem can be solved.

　　所以， 在未来的数百万年中， 生命能否在地球上延续取决于这个问题能否得到解决。 5．As a result of this event, a great dust cloud formed in the sky ______________ the sunlight.

　　由于这一事件，天空中形成一大团尘埃，遮住了阳光。 Unit 4　Astronomy: the science of the stars twice as far as

　　基 础 自 主 梳 理 whether will depend on blocking out

　　返回目录 Ⅳ.课文回顾

　　The earth was just a cloud of 1.________ (dusty) after the “Big Bang”. The 2.__________(explode) of the earth produced water vapour, which turned into water when the earth 3.________(cool) down. Water allowed the earth to dissolve harmful gases into the oceans and seas. That made 4.________ possible for life to begin to develop. The 5.________(arrive) of small plants encouraged the 6.___________(develop) of early shellfish and all sorts of fish. Many millions of years later the first green plants began to appear on land. Later land animals appeared. Unit 4　Astronomy: the science of the stars dust cooled 　 基 础 自 主 梳 理 explosion　 it 　 arrival 　 development　 　 返回目录

　　Some were insects. Others, called amphibians， 7.________(be) able to live on land as well as in the water.

　　Finally, some small clever animals appeared and spread all

　　over the earth. But they treat the planet in an

　　8.__________(friend) way, and the earth becomes too

　　9.________(pollute). Whether life will continue on the earth

　　for millions of years to come will depend on 10.________

　　this problem can be solved. Unit 4　Astronomy: the science of the stars were　 unfriendly　 基 础 自 主 梳 理 whether 　 polluted 　 返回目录 ◇ 单词点睛 ◇ harmful 　 adj. 有害的；伤害的(causing or capable

　　of causing harm)

　　(1)be harmful to　

　　对……有害

　　(2)do sb harm/do harm to sb

　　伤害某人

　　There is (no) harm in (sb's) doing sth

　　(某人)做某事有(无)害处

　　(3)harm n．& vt.

　　损伤；伤害

　　harmless adj.

　　无害的 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2015·江苏卷·阅读B] Many wastes produced in the

　　producing process are harmful as well.

　　在生产过程中产生的废品也是有害的。 (2)Scientists do not know how much and what kinds of

　　noises are harmful to (＝__________) ocean animals.

　　对于危害海洋动物健康的噪声的强度和种类，科学家

　　们了解甚少。 Unit 4　Astronomy: the science of the stars do harm to 考 点 互 动 探 究 返回目录 (3)It never occurred to him that his carelessness

　　could do ________________ to himself.

　　他从未想到他的粗心会对自己造成如此巨大的伤害。 (4)They may not be able to help but there's no harm

　　in ________(ask) them.

　　他们可能帮不上忙，但求他们一下倒也无妨。 Unit 4　Astronomy: the science of the stars such great harm 考 点 互 动 探 究 asking 返回目录 2　 exist 　vi.存在；生存

　　(1)exist on sth (＝live on sth)

　　靠某物生存

　　exist in…

　　存在于……之中

　　exist as…

　　作为……而存在，以……形态存在

　　There exists…

　　有/存在……

　　(2)existence n.

　　存在

　　in existence

　　现存的；现有的

　　come into existence 产生；存在

　　bring into existence 使发生；使产生；使成立 【温馨提示】

　　exist没有被动语态，也不能用于进行时态。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2015·全国卷Ⅰ·阅读D] If people had normal lives,

　　these cafes wouldn't exist.

　　如果人们过着正常的生活，这些咖啡厅就不会存在了。 (2)These services can __________ your systems or in

　　other organizations' systems.

　　这些服务可以存在于您的系统或其他组织的系统中。

　　Unit 4　Astronomy: the science of the stars exist in 考 点 互 动 探 究 返回目录 (3)According to some philosophers, everything in

　　________ is reasonable.

　　一些哲学家认为，存在的事物都是合理的。 (4)Ever since a long time ago, there have existed

　　different opinions among scientists on how the universe

　　first existed (＝_________________)．

　　长期以来，在宇宙起源的这个问题上，科学家们一直

　　存在着不同看法。 Unit 4　Astronomy: the science of the stars came into existence existence

　　考 点 互 动 探 究 返回目录 3

　　prevent 　 v．阻止；制止

　　prevent/stop/keep…from doing sth

　　阻止……做某事

　　protect…from

　　保护……不受……侵袭；挡住；防御

　　keep…doing sth

　　使……一直做某事

　　Unit 4　Astronomy: the science of the stars 返回目录 考 点 互 动 探 究 【巧学助记】 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【温馨提示】

　　(1)在主动语态中，stop/prevent…from doing sth中可 省去from，而keep…from doing sth中的from不可省略；

　　在被动语态中，这三个搭配中的from均不可省略。

　　(2)在protect…from结构中，from后接能带来伤害或损 害之物。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2015·北京卷·阅读C] The real challenge is preventing

　　light from scattering.

　　真正的挑战是防止光散射。 (2)I am very sorry that a previous engagement prevents me

　　________accepting your kind invitation.

　　很抱歉，因为我早已有约会，所以不能接受你友好的邀

　　请。

　　Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 from 返回目录 (3)Every possible means should be taken to prevent the

　　river from __________________.

　　应该采取各种可能的措施来防止这条河流受到污染。 (4)Unless we get more funding we'll

　　________________finishing our experimental

　　programme.

　　如果我们得不到更多的经费，我们将无法完成实验项目。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 being polluted be prevented from 返回目录 4

　　puzzle　 n. 谜；难题

　　vt. & vi.(使)迷惑；(使)为难

　　(1)puzzle sb

　　使某人为难

　　be puzzled by

　　被……迷惑

　　puzzle about/over sth

　　苦苦思索；仔细琢磨

　　(2)be in a puzzle about sth

　　对某事迷惑不解

　　(3)puzzling adj.

　　令人困惑的

　　puzzled adj.

　　感到困惑的

　　【温馨提示】

　　puzzled意为“迷惑的，不解的”，往往用于指人或 人的表情、脸色、声音等；puzzling意为“令人迷惑的， 让人不解的”，往往指物。

　　Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2015·四川卷·阅读E] People have long puzzled over how

　　the Egyptians moved such huge rocks.

　　长期以来，人们很不解的是埃及人是如何移动这些巨石的。 (2)How these creatures can survive in such severe

　　conditions ________ scientists.

　　这些生物是如何在这样艰难的条件下存活的，这使科学

　　家们很疑惑。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 puzzles　 返回目录 (3)The police are still puzzling(＝______________)

　　about/over how the accident could have happened.

　　警察仍然在苦思这起事故是怎么发生的。 (4)Due to their ________ nightmares the villagers have felt

　　________ recently.

　　因为最近村民们总做恶梦，所以大家都为此困惑不解。 (5)The reporters as well as some critics remained ________

　　by the election results.

　　一些评论家和记者们仍然对这次大选的结果困惑不解。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 in a puzzle puzzling puzzled　 puzzled　 返回目录 5

　　pull　 n. & vt.拉(力)；拖；牵引力

　　pull…up　把……往上拽

　　pull down

　　拆毁；摧毁

　　pull in

　　(车辆)进站停靠；靠边停靠

　　pull over

　　靠向路边

　　pull out

　　驶出；退出

　　pull through

　　康复；痊愈

　　Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 【活学活用】 (1)[2015·天津卷·阅读C] I sat down on the floor and pulled a

　　few books off the shelf at random. 我坐在地板上，从书架上随便抽了几本书。 (2)I felt a pull at my sleeve and turned round. 我觉得有人扯我的袖子，便转过身来。 Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 返回目录 (3)用pull短语的适当形式填空。

　　①The policeman signalled the driver to ________ his car

　　so that he could check his license.

　　②The foreign firm decided to ________ because of strikes.

　　③He _____________ his illness after the doctor had

　　almost given him up.

　　④If you can ________ your English grammar you stand a

　　good chance of succeeding in the exam. Unit 4　Astronomy: the science of the stars 考 点 互 动 探 究 pull over pull out pulled through pull up 返回目录