Unit 2 Section Ⅱ Grammar and usage-【金版新学案】2025-2026学年高中英语选择性必修第三册同步课堂高效讲义配套课件（译林版）

该高中英语课件围绕“主语从句”核心知识点，通过教材示例引导学生观察黑体部分自主总结用法，构建“语法探究—知识拾遗—课时精炼”的学习支架，帮助学生系统掌握主语从句的定义、连接词及形式主语结构等内容。 其亮点在于融合语言能力与思维品质培养，通过“我的发现”环节引导学生自主分析从句用法，结合“名师点津”解析易错点如whether/if的区别，分维度练习（单句语法填空、微写作）提升学习能力。实例丰富如形式主语结构表格、微写作任务，助力学生夯实语法基础并学会应用，也为教师提供结构化教学资源，提升课堂效率。

UNIT 2　Out of this world Section Ⅱ　Grammar and usage 内容索引 语法探究 1 课时精练 3 知识拾遗 2 语法探究 返回 主语从句 教材示例　 观察黑体部分并体会主语从句的用法 1．That Hubble is based in space allows it to see further than ground-based telescopes，and it allows scientists to learn more about the universe. 2．Whether life on other planets does exist is yet to be proved，but the signs are promising... 3．It is clear that telescopes are crucial tools for space exploration and that developing the required technology will help astronomers all over the world make exciting discoveries. 4．How much we will learn from the telescopes is merely limited by our imagination. 新知导学 我的发现　 1．当从句陈述一个事实时，我们可以使用 _____ 来引导一个主语从句。 2．当从句是一个表示是否的问题时，我们可以使用 ________ 来引导一个主语从句。 3．当主语从句很长时，可用 ___ 作形式主语。 4．当从句是表示程度的问题时，我们可以使用 __________ 来引导一个主语从句。 that whether it how much 一、主语从句的定义 在主从复合句中充当主语的从句即为主语从句。 What surprised me is that everybody seemed to be very cold to her. 让我吃惊的是每个人似乎对她都很冷淡。 It worried the woman that her son was always playing computer games. 她的儿子一直在玩电脑游戏，这让这个女人很担心。 语法精讲 二、主语从句的连接词及其句法功能 引导词 例词 句法功能 从属 连词 that，whether/if 两者在从句中均不作成分，只起连接作用；that无实义，whether/if表示“是否”。 连接 代词 who，what，which，whoever，whatever等 在从句中作主语、宾语、表语、定语等成分。 连接 副词 when，why，where，how等 在从句中作时间、原因、地点、方式状语等成分 That he will win the medal seems unlikely. 他似乎不太可能获得奖牌。 Whether they would support us was still a problem. 他们是否会支持我们仍然是个问题。 What I say and what I think are no business of yours. 我说什么，想什么与你无关。 Who will present the meeting has not been decided yet. 由谁来主持会议还没有决定。 Whatever you do in your spare time should do no harm to others. 无论你在业余时间做什么都不应该伤害其他人。 How this happened is not clear to anyone. 这件事怎样发生的，谁也不清楚。 When we will have a meeting is an important question. 我们何时举行会议是个重要的问题。 Where I spend my summer is no business of yours. 我在哪里过暑假不关你的事。 名师点津　 (1)whether/if引导主语从句时，也可以让it充当形式主语，真正的主语后置；在句首不能用if引导主语从句。 Whether the radiation will be controlled is still unknown. ＝It is still unknown if/whether the radiation will be controlled. 辐射是否会得到控制还不知道。 (2)that引导主语从句时只起连接作用，在句子中不作任何成分，也无任何意义。有时为了平衡句子结构，用it充当形式主语，而将that从句置于后面。that引导主语从句时通常不能省略，尤其是位于句首时。 That they were in truth sisters was clear from the facial resemblance between them. 很明显，她们确实是亲姐妹，她们的脸型很相似。 It is certain that she will do well in her exam. 毫无疑问，她考试成绩会很好。 (3)what引导主语从句时在从句中作主语、宾语、表语或定语，相当于定语从句中的“先行词＋关系代词”的形式，表示“……的事情(时间、地点、样子等)”。 What(＝The thing that) you did at the meeting yesterday was right. 昨天在会上你做得对。 She made a trip to what (＝the place that) was once a battlefield. 她到以前曾是一个战场的地方去旅游。 (4)who“谁”，表疑问含义；whoever“无论是谁”，表肯定意义，相当于anyone who。 Whoever(＝Anyone who) did the job must be rewarded. 无论谁做了这项工作一定要得到酬谢。 (5)“疑问词＋ever”既能引导主语从句，又能引导让步状语从句。但是“no matter＋疑问词”只能引导让步状语从句。 Whenever he is willing to give up his foolish idea is of no interest to me. 无论他什么时候愿意放弃他的愚蠢的想法，我都不感兴趣。(主语从句) No matter when you come，please call me first.(状语从句) 不管你什么时候来，请先给我打个电话。 三、主语从句中用 it 作形式主语的结构 为保持句子平衡，常把主语从句后置，而用形式主语 it 代替。it 作形式主语时常用于以下句型： 句型 说明 It＋系动词＋形容词＋that 从句 常用于此句型的形容词有 important，(un)likely，possible，necessary，natural，wrong等 It＋系动词＋名词＋that 从句 常用于此句型的名词有 fact，idea，honor，question，pity等 It＋be 动词＋过去分词＋that 从句 常用于此句型的分词有 known，proved，said，decided，suggested，thought 等 It＋特殊动词＋that 从句 常用于此句型的动词有 appear，happen，seem，occur 等 It is obvious that he has done what he can to help you. 很明显，他已经尽了最大努力来帮助你。 It is likely that someone gave her a lift，or that she took a taxi. 可能有人开车捎了她一程，要不就是她打了辆出租车。 It's an honour that we have been invited to the party.很荣幸我们能被邀请参加宴会。 It's no surprise that he won the first prize in the English-speaking contest. 他在这次英语演讲比赛中获一等得奖并不令人惊奇。 It is said that he has set up several companies of his own.据说，他创办了好几家自己的公司。 It is expected that air quality will become better and better.人们期望空气质量将会变得越来越好。 It happened that he was out when I called on him. 当我拜访他时，他碰巧不在家。 It occurred to me that I had left the door unlocked. 我突然想起来忘记锁门了。 名师点津　在“It＋be＋过去分词＋主语从句”结构中，过去分词若为suggested/ordered/required/advised等，主语从句中的谓语用“(should) do”。 It is suggested that the foundation should be set up to collect enough money. 有人建议应建立基金会来筹钱。 四、主语从句中应注意的问题 1．从句的语序要用陈述语序。 Whoever leaves the room last is expected to turn off the lights. 无论谁最后离开房间都要把灯关掉。 2．从句作主语时，主句的谓语一般用单数形式。有时受表语的影响用复数形式。 What you said just now is quite right. 刚刚你说的话很对。 What he wants to read now are some magazines. 现在他想读的是一些杂志。 3．从句的时态一般要取决于主句。 What made people excited was that the solar ship had completed around-the-world trip. 让人们激动的是太阳能船已完成了环游世界的旅行。 体系构建 返回 知识拾遗 返回 foundation n.基础，根据；地基；创办；基金会 (教材原句)...how it laid the foundation for future exploration. ……它是如何为未来的探索奠定基础的。 (1)lay the foundation for...　 为……打下基础 (2)found vt. 创立，建立；创办 be founded on... 被建立在…… (3)founder n. 创立者，创办者，创建者 佳句背诵　Four years of university study and life lay the foundation for future business. 大学四年的学习生活为今后的事业奠定基础。 核心词汇精研 基础练透——单句语法填空 ①This theory is built on a __________ (found) of factual knowledge. ②A good relationship has to be founded ____ trust. 能力提升——微写作 ③我们在学校学到的知识将为我们的将来打下基础。 What we are learning at school will ____________________________． foundation on lay the foundation for the future 句型公式：动词不定式作后置定语 (教材原句)In the early 1600s，Galileo was the first to use his telescope to explore the sky and since then，telescopes have continually improved. 在17世纪早期，伽利略是第一个用望远镜探索天空的人，从那以后，望远镜不断改进。 重点句型解构 句中的动词不定式短语to use his telescope to explore the sky作后置定语，修饰the first。 (1)英语中序数词是中心词或作定语修饰名词时，后常用动词不定式作后置定语。 (2)除了序数词外，最高级或no，all，any等限定词的中心词也常用动词不定式作后置定语。 (3)chance，wish，ability，courage，need，promise，attempt，time，opportunity，way等名词后常用动词不定式作后置定语。 佳句背诵　Do you know which is the best route to take to the museum? 你知道去博物馆的最佳路线吗？ 基础练透——单句语法填空 ①She was the first woman ________ (win) the gold medal in the Olympic Games. ②Where is the best place ________ (meet)for us tomorrow evening? ③He felt there was no one ________ (turn) to when he got into trouble. 能力提升——微写作 ④我已经放弃了现在的工作，有机会找到另一份工作。 I have given up my present job and _____________________________． to win to meet to turn have a chance to get another one 维度一　单词拼写 1．The organization has grown enormously since its __________ (创建)in 2000. 2．He said nothing，_______ (只不过)smiled and watched her. 3．Too much time is spent on ______________(管理). 4．It's hoped that the _________ (望远镜)will enable scientists to see deeper into the universe than ever before. 5．In 1957 the Soviet Union launched the first satellite to _____ (围绕……运动)the earth. 随堂演练 foundation merely administration telescope orbit 维度二　单句语法填空 1．The committee is comprised ___ representatives from both the public and private sectors. 2．Tom is an excellent __________ (astronomy). 3．The criticisms ____________(found) on facts as well as on the convincing evidence. 4．It's crucial that you _______________ (spend) some time cultivating genuine love with the members of your family. of astronomer are founded (should)spend 维度三　语法与写作 1．给我印象最深的是在那段时间里形成的友谊。 ______________________ is the friendship formed in the period. 2．我母亲告诉我的事深深扎根在我的脑海里。 __________________________ was deeply rooted in my mind. 3．我们每天去游泳对我们有很多好处。 _____________________________ does a lot of good to us. 4．很明显，我们需要更多的实践。 ________________ we need more practice. 返回 What impresses me most What my mother had told me That we go swimming every day It is obvious that 课时精练 返回 维度一　单句语法填空 1．_____ John was late for the class is plain to see. 2．_______ part of the territory he will make his way to needs discussing. 3．When she will come back school ________ (depend) on her mother. 4．It is uncertain _______ his family was originally Britain or American. 5．What they want at present ____(be) basic skills for survival in the wild. 6．___ is desirable that we should read the instructions of the instruments in advance. 基础达标 Why　 Which　 depends　 whether　 are　 It 7．________ the astronomers will hold a party tomorrow depends on the weather. 8．________ is interested in the activity can sign their names. 9．It is requested that all the members __________(be) present at the meeting tomorrow. 10．______ theory must go hand in hand with practice is a principle we should always keep in mind. Whether　 Whoever　 (should) be　 That 维度二　完成句子 1．据报道中国又成功发射了一颗人造地球卫星。 ________________China has launched another man-made earth satellite into orbit. 2．很明显视频是极好的。 ________________ the video turns out splendid. 3．给我们印象最深的是你那展示了你的杰出才能的艺术技巧。 __________________________ your art skills，in which you showed outstanding talent. 4．我想强调的是我的英语很流利。 ____________________ is that I am fluent in English. It is reported that It is obvious that What impressed us most were What I want to stress 5．这个电影明星将来我们市使我们每个人感到兴奋。 __________________________________ has excited every one of us. 6．很遗憾，那场争吵破坏了他们的友谊。 _______________ the quarrel broke up their friendship. 7．他的父母是否会给他买一台新电脑要看他的考试成绩。 _______________________________________________ depends on his exam results. 8．这种动物为什么突然灭绝仍然是个谜。 It remains a mystery _____________________________________． That the film star will come to our city It's a pity that Whether his parents will buy a new computer for him why this kind of animal died out suddenly (二)运用衔接词把上面的句子合并成一篇80词左右的微型作文。 ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 　　It is said that our school will hold a singing contest to celebrate the Party's birthday.It is not yet clear when the contest will take place and how it will be organized.But after hearing the news，the students have begun to prepare for it.It is thought that through this activity，we can express our love for the Chinese Communist Party and whether we can win the prize or not doesn't make any difference.It's well-known that under the leadership of the Communist Party，our life is getting better and better.What makes us proud is that we are living in a stable，peaceful and prosperous country.I'm sure the singing contest will be a great success. Ⅰ.阅读理解 A From now，if all goes well，a high-tech spacecraft will land in the South Pole of the moon.There，it will drill 66 feet down into the surface and collect samples of the mantle(月幔) to bring back to the Earth. But before it leaves，it will have a two-part time capsule: a public part，full of the Earth's history，and a private part，full of digital memory boxes created by individuals.These memory boxes can hold digital files—records of family trees，videos or actual DNA in the form of human hair.Not everyone can have a digital memory box，though.The boxes are only delivered for the people who donate the money to the project. 素能提升 The project，called Lunar Mission One，has already raised more than half of its ￡600，000 goal since its launch just a few days ago.The founders thought that it would succeed because of the attraction of both exploring the moon surface and leaving a time capsule behind.The mission was a technical action，but it was also an emotional one，bringing the excitement of knowing that something humans built on the Earth reached somewhere else in space. Still，it does seem risky for a person to donate ￡60 to keep a digital memory box for a project that won't come true until 2024.What if the project never takes off? What if the technology isn't good enough? What if those digital memory boxes break on the moon's surface? And how will anybody ever even know if that happens? Ian Crawford，a professor at Birkbeck College in London and scientific advisor to the mission，says it is not necessary to worry about these.The plan to leave a time capsule on the moon isn't really about physically leaving something on the moon—it's more an opportunity to encourage people's interest in space. 语篇解读　本文是一篇说明文。文章主要介绍了名为“月球任务一号”的太空项目：高科技航天器将携带两个时间胶囊在月球南极着陆。 1．Who can have a digital memory box on the moon? A．A person who donates ￡60 to the project. B．A person who has records of family trees. C．A person who is in charge of the project. D．A person who is interested in exploring the moon. 细节理解题。根据第二段中的 “The boxes are only delivered for the people who donate the money to the project.”及第四段中的“Still，it does seem risky for a person to donate ￡60 to keep a digital memory box for a project that won't come true until 2024.”可知，一个人捐赠60英镑便可以在月球上留下一个数字存储盒。故选A。 √ 2．What can be learned about Lunar Mission One from Paragraph 3? A．The spacecraft was successfully launched just a few days ago. B．It will explore the moon surface and leave a time capsule on the moon. C．It was created because of the excitement of knowing something in space. D．It was a technical action because it was designed with rich emotion. 细节理解题。根据第三段中的 “The founders thought that it would...leaving a time capsule behind.”可知，“月球任务一号”将会探索月球表面，并在月球上留下时间胶囊。故选B。 √ 3．Why does it seem risky to donate ￡60 to keep a digital memory box? A．Because the spacecraft won't be sent on time. B．Because the technology isn't good enough. C．Because the project won't come true until 2024. D．Because there are various possibilities in such a long time. 推理判断题。根据第四段中的那些质疑的问题可推知，捐赠60英镑去拥有一个数字存储盒有一定的风险，是因为在这么长的时间里会有各种各样的可能性。故选D。 √ 4．What can be concluded from the last sentence of the passage? A．Everything about the project will be OK. B．The time capsule on the moon is not meaningful. C．The plan to leave a time capsule on the moon is scientifiC． D．The message of the project is to call more people's attention to space. 推理判断题。根据文章最后一句 “The plan to leave a time capsule on the moon isn't really about physically leaving something on the moon—it's more an opportunity to encourage people's interest in space.”可知，该项目的目的是呼吁人们更多地关注太空。故选D。 √ B In 2017，the United Arab Emirates announced its ambition to colonize Mars within the next 100 years.But architects are already imagining what a Martian city might look like—and planning to recreate it in the desert outside Dubai. Mars Science City was originally scheduled to cover 176，000 square meters of desert—the size of more than 30 football fields—and cost approximately 135 million dollars.To create a space for Dubai's Mohammed Bin Rashid Space Centre(MBRSC) to develop the technology needed to colonize Mars，architects from Bjarke Ingels Group were asked to design a prototype of a city suitable for sustaining life on Mars—and then adapt it for use in the Emirati desert. For this unique commission，the architects first had to overcome the immense challenges of creating a design to make the severe environment of Mars habitable. Mars has a thin atmosphere and no global magnetic field，so there's little protection from harmful radiation.Temperature is another problem—the average on Mars is a chilly -63 degrees C．The thin atmosphere also means there's little air pressure，so liquids quickly evaporate into gas；despite freezing temperatures，unprotected human blood would boil on Mars.But according to Jonathan Eastwood，director of the Space Lab at Imperial College London，the biggest challenge in terms of a sustained presence on Mars is not the engineering or scientific challenge，but the human and personal one.More researches need to be done to test the effects of isolation on mental and physical health of astronauts. The MBRSC hopes that，in future，such research could take place in Mars Science City.This is going to be our platform where we can develop the science and the technology that will help us in our future missions to Mars，said Adnan AlRais，Mars 27 Program Manager at MBRSC．“We want to come up with a totally new facility that will help the international community.” 语篇解读　本文是一篇说明文。文章主要介绍了该火星城的相关情况，包括其外观、建设中需要解决的难题及其存在的意义等。 5．What information can you get about the Martian city? A．It is planned to be completed in the next 100 years. B．It occupies more than 30 football fields of Dubai. C．It has been put into use in the desert outside Dubai. D．It serves as a prototype for sustaining life on Mars. 细节理解题。根据第二段中的“To create a space for...a city suitable for sustaining life on Mars”可知，火星城是为了模拟在火星上生存而设计的城市模型。故选D。 √ 6．Which is NOT the challenge for living on Mars? A．A thin atmosphere exposes people to harmful radiation. B．High temperature makes unprotected human's blood boil. C．Little air pressure causes liquid to turn into gas quickly. D．A long period of isolation may affect physical health. 细节理解题。根据第三段中的“despite freezing temperatures，unprotected human blood would boil on Mars”可知，尽管温度极低，未采取任何防护措施的人的血液在火星上还是会沸腾。B项中的“High temperature”描述错误，故选B。 √ 7．What's the attitude of Adnan AlRais toward building MBRSC? A．Positive.　 B．Objective. C．Critical.　 D．Skeptical. 观点态度题。根据最后一段中的“This is going to be our platform...future missions to Mars，said Adnan AlRais”可知，阿德南·拉伊斯认为火星城会成为一个发展科学技术的平台，它将帮助我们完成未来一系列的火星任务。由此可推知，阿德南·拉伊斯对于火星城的建设持积极态度。故选A。 √ 8．Which of the following can be the best title for the text? A．The Research on the Effects of Living on Mars B．A Martian City Designed for the Desert Outside Dubai C．The United Arab Emirates' Ambition to Colonize Mars D．The Challenges of Surviving the Inhabitable Environment of Mars 标题归纳题。本文第一段点明主题，即阿联酋将在迪拜外围的沙漠上建造一个模拟火星居住环境的火星城；第二段介绍火星城概况；第三段介绍建造火星城要解决的一些问题；最后一段介绍阿德南·拉伊斯对火星城的看法。由此可知，B项(一个在迪拜外围的沙漠上设计的火星城)最适合作为本文的标题。故选B。 √ C The oddness of life in space never quite goes away.Here are some examples. First consider something as simple as sleep.Its position presents its own challenges.The main question is whether you want your arms inside or outside the sleeping bag.If you leave your arms out，they float free in zero gravity，often giving a sleeping astronaut the look of a funny ballet (芭蕾) dancer.“I'm an inside guy，” Mike Hopkins says，who returned from a six-month tour on the International Space Station.“I like to be wrapped up.” On the station，the ordinary becomes strange.The exercise bike for the American astronauts has no handlebars.It also has no seat.With no gravity，it's just as easy to pedal violently.You can watch a movie while you pedal by floating a microcomputer anywhere you want.But station residents have to be careful about staying in one place too long.Without gravity to help circulate air，the carbon dioxide you exhale (呼气) has a tendency to form an invisible (隐形的) cloud around your head.You can end up with what astronauts call a carbon-dioxide headache. Leroy Chiao，54，an American retired astronaut after four flights，describes what happens even before you float out of your seat.“Your inner ear thinks you're falling.Meanwhile your eyes are telling you you're standing straight.That can be annoying—that's why some people feel sick.” Within a couple of days—truly terrible days for some astronauts' brains learn to ignore the panicky signals from the inner ear，and space sickness disappears. Space travel can be so delightful but at the same time invisibly dangerous. For instance，astronauts lose bone mass.That's why exercise is considered so vital that National Aeronautics and Space Administration (NASA) puts it right on the workday schedule.The focus on fitness is as much about science and the future as it is about keeping any individual astronaut healthy.NASA is worried about two things: recovery time once astronauts return home，and，more importantly，how to maintain strength and fitness for the two and a half years or more that it would take to make a round trip to Mars. 语篇解读　本文是一篇说明文。文章主要介绍了在太空中生活时所面对的各种挑战。 9．What is the major challenge to astronauts when they sleep in space? A．Deciding on a proper sleep position. B．Choosing a comfortable sleeping bag. C．Seeking a way to fall asleep quickly. D．Finding a right time to go to sleep. 细节理解题。第二段谈到宇航员在太空的睡眠，说睡姿是一个很大的问题(Its position presents its own challenges.)，然后以胳膊是否应该放在睡袋里为例进行解释说明。由此可知，宇航员在太空中睡觉时面临的最大挑战是睡姿的问题。故选A。 √ 10．When will the astronauts suffer from a carbon-dioxide headache? A．They circle around on their bikes. B．They use microcomputers without a stop. C．They exercise in one place for a long time. D．They watch a movie while pedaling. 细节理解题。第三段讲到宇航员面临的另外一个问题就是在锻炼的时候，由于没有重力帮助空气循环，宇航员呼出的二氧化碳有可能在头顶形成隐形的云朵，此时宇航员就会出现二氧化碳状态下的头疼。故选C。 √ 11．One of NASA's major concerns about astronauts is ________． A．how much exercise they do on the station B．how they can remain healthy for long in space C．whether they can recover after returning home D．whether they are able to go back to the station 细节理解题。最后一段讲到美国国家航空航天局(NASA)关心宇航员的身体健康，他们关心宇航员回到家里之后的恢复期，更重要的是，如何让宇航员在进行火星探测的两年半或更长时间内保持身体健康，这与B项描述是一致的。故选B。 √ Ⅱ.阅读七选五 Ways to Get Your Kids into Nature 　　Being in nature for kids has tremendous health benefits.There are many ways you can incorporate nature into your children's lives，even if you live in the city. 　　Inspire curiosity by being curious yourself.A parent's excitement can be spread to the children，and when you show respect for nature，your children follow suit.1______．“I don't know! Let's find out together.” is a wonderful way to get the ball rolling.Be open to a mutual adventure and allow your curious inner child to come out while you explore nature with your children. 　　2______．If you have to carpool(拼车) in the morning，turn off the devices instead and encourage your children to look out of the window.The early morning fall skies are beautiful with color and migrating birds. After all，even views of nature from the car window are calming and beneficial. 　　Stop thinking about nature time as leisure time.Time in nature is an essential investment in your children's health and well-being.If you view nature time as essential to good health，you will be more likely to engage in it. 3______，nurturing creativity and wonder is part of your responsibility as parents. 　　Look at the stars.Visit your local observatory，and then drive out of the city some morning or evening for your own stargazing(天体观察) with a blanket and telescope.Observing the stars offers a deeper and wider understanding of the universe.4______． 　　Plant a small garden.5______．Bean and pea plants grow quickly and can be eaten when mature，so teach your children about food and the wonder of growth. A．Limit electronic devices while driving B．Encourage questions you don't know the answers to C．If you want to raise your healthy，well-balanced children D．If you have the space，help your children plant a few vegetables E．It will teach teamwork，pride in the community，and family togetherness F．If your child is interested，encourage him to get involved in the community G．Allow yourself to think about it，and talk to your children about that wonder 语篇解读　本文是一篇说明文。文章主要介绍了让孩子融入自然的一些方法。 Ways to Get Your Kids into Nature 　　Being in nature for kids has tremendous health benefits.There are many ways you can incorporate nature into your children's lives，even if you live in the city. 　　Inspire curiosity by being curious yourself.A parent's excitement can be spread to the children，and when you show respect for nature，your children follow suit.1_________________________________________________. “I don't know! Let's find out together.” is a wonderful way to get the ball rolling.Be open to a mutual adventure and allow your curious inner child to come out while you explore nature with your children. B．Encourage questions you don't know the answers to B项中的“不知道答案的问题”和后一句中的“我不知道！让我们一起找到答案。”相呼应，符合语境。故选B。 　　2_____________________________________．If you have to carpool(拼车) in the morning，turn off the devices instead and encourage your children to look out of the window.The early morning fall skies are beautiful with color and migrating birds.After all，even views of nature from the car window are calming and beneficial. A．Limit electronic devices while driving A项表达的是“开车的时候限制电子设备的使用”，和后一句中的“关掉电子设备”相呼应。故选A。 　　Stop thinking about nature time as leisure time.Time in nature is an essential investment in your children's health and well-being.If you view nature time as essential to good health，you will be more likely to engage in it. 3_____________________________________________________，nurturing creativity and wonder is part of your responsibility as parents. C．If you want to raise your healthy，well-balanced children 由空格前面“Time in nature is an essential investment in your children's health and well-being.”可知，在自然中待的时间是对你孩子健康和幸福的必要投资。选项C表达的是“如果你想要培养出健康而且明智的孩子”，是对空格前面“对孩子健康和幸福的必要投资”的承接。故选C。 　　Look at the stars.Visit your local observatory，and then drive out of the city some morning or evening for your own stargazing(天体观察) with a blanket and telescope.Observing the stars offers a deeper and wider understanding of the universe.4_______________________________________ _________________________________． G．Allow yourself to think about it，and talk to your children about that wonder 由空格前一句“Observing the stars offers a deeper and wider understanding of the universe.”可知，观察星空能够加深对宇宙的理解。选项G中的“那种神奇”指代的是前一句表达的“对宇宙的理解”，和前一句相呼应。故选G。 　　Plant a small garden.5__________________________________________ ____________________．Bean and pea plants grow quickly and can be eaten when mature，so teach your children about food and the wonder of growth. D．If you have the space，help your children plant a few vegetables D项表达的是“如果你有空间，帮助你的孩子们种一些蔬菜”，是对前一句“开辟一个小菜园”的承接，并和后一句“种植豆角和豌豆”相呼应。故选D。 Ⅲ.语法填空 　　The Big Bang theory is science's best explanation of how the universe began.The theory insists that our universe 1.____________(create) when a tiny and superhot mass exploded and began expanding very rapidly.It 2.________ (final) cooled and formed into the stars and galaxies(星系) with 3._______ we are familiar.It is said 4._____ the event happened approximately 15 billion years ago.The event of the Big Bang was space itself expanding—perhaps at speeds 5.________(great) than light. was created finally which that greater 　　Since the late 1960s，the Big Bang theory 6.________(be) the main explanation for the birth of our universe.Because 7.__________(physics) have not yet found a convincing theory that explains how gravity operates，they are unable 8.________(find) theories as to what happened after the Big Bang.At the very beginning，our universe may have been an object with nearly-infinite density，9.___ perhaps something else.Our instruments and 10.__________ (science) methods may need to be fully improved before any further progress is made. 语篇解读　本文是一篇说明文。文章主要介绍了“大爆炸理论”。 has been physicists to find or scientific 1．答案：was created　 2．答案：finally　 考查词性转换。设空处作状语修饰cooled和formed，故填finally。 考查动词的时态、语态和主谓一致。universe为单数形式且与create之间是被动关系，且create所表示的动作发生在过去，故填was created。 3．答案：which　 4．答案：that　 考查名词性从句。It is said that...意为“据说……”，其中It是形式主语，真正的主语是由that引导的从句。故填that。 考查定语从句。此处为由“介词＋关系代词”引导的限制性定语从句，修饰先行词stars and galaxies(星系)，因该关系代词在从句中作介词with的宾语，故填which。 5．答案：greater　 6．答案：has been　 考查动词的时态和主谓一致。由“Since the late 1960s”可知，此处应用现在完成时，又因主语为单数形式，故填has been。 考查形容词的比较级。由than可知，此处应用比较级形式，故填greater。 7．答案：physicists　 8．答案：to find　 考查非谓语动词。be unable to do sth.意为“没有能力做某事”。故填to find。 考查词形转换。设空处作主语，表示“物理学家”，又因谓语动词为复数形式，故填physicists。 9．答案：or　 10．答案：scientific　 考查词性转换。设空处作定语修饰methods，表示“科学的”，故填scientific。 考查连词。由句意可知“an object with nearly-infinite density”与something else之间是选择关系，故填or。 返回 谢 谢 观 看 UNIT 2　Out of this world 返回 $