高三英语一轮复习优质学案10：Unit 4 Astronomy：the science of the stars

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高三英语一轮复习优质学案13：Unit 4 Astronomy：the science of the stars

Unit 4Astronomy：the science of the stars主语从句作主语用的名词性从句，因其在复合句中作主语，又称主语从句。

一、连接词1. 从属连词that, whether等。

that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。

That she left him cut him to the heart. 她的离开使他很伤心。

注意由whether引导的主语从句放在句首、句末都可。

Whether it will please them is not easy to say. /It is not easy to say whether it will please them.很难说这会不会使他们高兴。

2. 连接代词who, what, which, whoever, whatever, whichever等。

What seems easy to some people seems difficult to others.对某些人很容易的事, 对另外一些人可能很困难。

3. 连接副词when, where, how, why等。

Why he did it remains a mystery. 他为什么做那件事依然是个谜。

二、位置主语从句可以前置，也可以后置。

用it作形式主语，而把主语从句放在句末，常用下面几种句型：1. It+be+表语+主语从句It is still uncertain whether he is coming or not.他是不是来还没有确定。

2. It+不及物动词+主语从句It happens that they were absent.他们碰巧缺席了。

3. It+及物动词（被动语态）+主语从句It has been decided that the exhibition will not open on Sundays.现经决定展览会星期日不开放。

高三英语一轮复习精品学案：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the starsⅠ.完形填空I was driving my car the other day.The radio was playing，and I was __1__ along.The song was a __2__ one and even my weak voice sounded good.Then something bad __3__，however.The sweet sound of the music ended and was __4__ with the alarming news break.I drove on while the __5__ said prices were going higher again because of the __6__ speculation(投机) on Wall Street.The race for the Presidency was getting worse.Violence __7__ when fans of a sports team went wild，__8__ their favorite team’s championship.Finally，I could __9__ no more and turned off the radio.Silence seemed __10__ to listening to anything else about the crazy，competitive society we live in.I slowed down as I entered a local town and __11__ the people.__12__ a smiling woman was throwing birdseed into her backyard，a dozen birds flew down to enjoy the __13__ being laid out before them.A young man was __14__ his little daughter safely in his arms.He tickled (胳肢) her __15__ when she pulled the hat off his head and they both laughed.I laughed too as I looked at all of this __16__．Although in my car the radio was __17__，in my heart I was still singing. __18__，this world could use a little more kindness and a lot less competition.Kindness makes us all __19__ in this life.Your only competition is with __20__：to be the best possible you that you can be.【语篇解读】本文是一篇记叙文。

高三英语一轮复习优质学案1：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the stars [考情解读]一、重点单词1．astronomy n．天文学astronomer n．天文学家2．theory n．理论3．atmosphere n．大气层；气氛4．biology n．生物学biologist n．生物学家biological adj.生物学的5．gravity n．地心引力；重力6．satellite n．卫星；人造卫星7．physicist n．物理学家physical adj.物理的physics n．物理8．multiply vt.乘；增加9．exist vi.存在existence n．存在10．puzzle vt.使……迷惑puzzle n．难题；谜puzzled adj.迷惑不解的puzzling adj.令人困惑的11．crash vi. & vt.碰撞；坠落12．violent adj.猛烈的violence n．暴力violently adv.猛烈地13．harmful adj.有害的harm n．害处harm vt.对……有害14．global adj.全世界的；全球性的globe n．球体；地球仪15．unlike prep.不像；和……不同二、必备短语1．lay eggs下蛋2．in one's turn 轮到某人；接着3．block out 挡住(光线)4．get the hang of 熟悉；掌握；理解5．watch out 密切注视；当心；提防6．depend on 依靠7．cheer up 感到高兴；感到振奋8．now that 既然9．give birth to 产生；分娩10．prevent from 阻止；制止三、经典句式1．The earth became so violent that it was not clear whether the shape would last or not.地球变得如此猛烈以至于不明确是否它的形状会保持这个样子。

高三英语一轮复习精品学案：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the starsⅠ.阅读理解Electricity from renewable sources including solar，wind and others will replace coal as the largest source of electricity shortly after 2030. That’s thanks to both future global investment in clean energy power factories and a decline in coal power use in developed nations like the U.S. and in Europe. By 2040，there will be 13% more energy produced by clean power than by coal factories. Clean energy already contributed to almost half of the world’s new power generation capacity (发电容量) added last year.China’s growing service economy is actually a big deal for energy. China，the world’s factory，has been working to build more industries around services instead of its historic focus on heavy industry. As a result，the country’s energy intensity—energy consumption (消耗) per unit of economic output—has been declining over the years and that is having a major effect on global energy use. China has been able to reduce the amount of energy it consumes per unit of future economic growth by 85% over the last two decades.Economic growth gradually breaks the connection with carbon emissions (排放物). For years，economic development has been tied to energy use. Generally, countries that use a lot of energy have a stronger economy. But with the rise of clean energy technologies，a handful of small European countries have been able to lower their carbon emissions without dampening their economic growth. Norway，Denmark，Finland，Iceland and Sweden have led this trend.But now the International Energy Agency has found that global carbon emissions remained flat or declined ever so slightly in 2014, while the world’s economy actually grew at a good pace. That is likely to be abnormal and won’t be repeated inthe near future. But the data suggests that the poor connection between carbon emissions and economic growth is starting to happen on a broader range outside of those small，wealthy early－adopter nations.【语篇导读】本文为说明文。

高三英语一轮复习优质学案4：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the starsWords1、harmful有害的harm vt.&n.有害；害处do harm to sb对某人有害Smoking is harmful to our health.=Smoking harms our health.=Smoking does harm to our health.抽烟对我们的身体有害。

2、develop vt.&n.发展；开发；冲洗（底片）developed adj.发达的developing adj.发展中的①He believes that sports can develop mind and body.他相信运动有益于身心发展。

②In my opinion, developed countries ought to help developing countries.我认为，发达国家应该帮助发展中国家。

③With the development of agricultural and industry, we live better and better.随着工农业的发展，我们的生活越来越好。

3、presence n.出席；当场present adj.出席；当场；礼物；赠送（读音有别）①I attended the discussion but I didn’t notice her presence.我参加了讨论会，但没有看到她。

②All the people present agreed to our plan.（作形容词时放在被修饰的词后面）所有当场的人都同意我们的计划。

③Almost everybody who was present at yesterday’s meeting got a present.差不多所有参加昨天会议的人都得到了一份礼物。

4、disappoint vt.使失望disappointment n.失望disappointed adj.失望的disappointing adj.令人失望的①To our great disappointment, our football team failed again.使我们特别失望的是，我们的足球队又输了。

高三英语一轮复习精品学案：Unit 4 Astronomy：the science of the stars(1)

Unit 4 Astronomy：the science of the starsⅠ.单词语境记忆1．exist in space存在于太空2．crash into a truck 撞上一辆卡车3．float on the surface of the water 漂浮在水面上4．pull out my tooth 拔掉我的牙齿5．masses of work 一大堆的工作6．in that cold climate在如此寒冷的气候条件下7．create a comfortable atmosphere创造一种舒适的气氛8．more than one billion dollars 十亿多美元Ⅱ.词性转换与派生记忆1．puzzle n．谜；难题→v t.& v i.(使)迷惑；(使)为难2．religion n．宗教；宗教信仰→religious adj.宗教的3．theory n．学说；理论→theoretical adj.理论的，理论性的4．violent adj.猛烈的；激烈的；强暴的→violence n．暴力→violently ad v.暴力地；猛烈地5．harmful adj.有害的→harm n．& v．伤害→harmless adj.无害的6．exist v i.存在；生存→existence n．存在；生存7．puzzle v i.& v t.(使)迷惑；(使)为难n．谜；难题→puzzled adj.迷惑不解的→puzzling adj.令人迷惑的8．biology n．生物学→biologist n．生物学家Ⅲ.单词趣味串记1．Tom was in violent pain.As a result，he behaved violently and treated everythingwith violence.汤姆处于极度痛苦之中，因此他表现得很粗暴，一切都以暴力对待。

高三英语一轮复习优质学案15：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the starsⅠ.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____________________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。

高三英语一轮复习精品课件10：Unit 4 Astronomy：the science of the stars

by force 依靠武力 force sb.to do sth.迫使某人做某事 come into force (法律)实施 force sb.into doing sth.迫使某人做某事 in force 大批的 force one's way 强行前进或进入 force sth.on sb.把……强加于……
5. I cheered_up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.(p.31)
我立刻高兴起来，由于失重，我在太空船舱里飘来飘去，我望着地球越来越小，而月球越来越大。
4. Before we left，Li Yanping explained to me that the force of gravity would change three times on our journey...(p.30)
在启程之前，李彦平向我解释说，在我们的航行中会有三次重力的改变。
[探究学习] 阅读下列句子，注意 force 的意思。
(1)We forced the door open and arrested the two murderers.(强迫，强行)
(2)The force of gravity is really mysterious.(力量) (3)When he was only seventeen，he joined the forces to defend his country.(军队) (4)As most men suffered from this strange disease，the majority of the labour_forces in this village were women and children.(劳动力) [词语归纳] force open 强行打开

高考英语复习学案Unit 4 Astronomy：the science of thestar学案

Unit 4 Astronomy：the science of the stars1、It exploded loudly with fire and rock, they were in time to produce the watervapor, ... 地球猛烈的爆炸喷出了烈火和岩石，最终产生了水蒸气……in time=sooner or later迟早=not late or without delay（on time准时）①Good luck to him, the doctor arrived there in time and the boy was saved.幸运的是，医生及时赶到，男孩得救了。

②You’ll understand it in time.（=sooner or later）你迟早会明白这件事的。

*be to do常用来表示不可避免将要发生的事或必须要做的事。

①This discovery was to have a major effect on the treatment of heart disease.这个发现对心脏病的治疗产生了重大影响。

②Mr. Clark said to his daughter, “You are to be home by 10 o’clock at the latest.”克拉克先生对他的女儿说，“你必须在10点以前到家。

”③I was（about）to leave when my uncle came in.（此时be to do=be about to do）我正要出发，这时叔叔进来了。

2、It allowed the earth to dissolve harmful gases, which had become part of theearth’s atmosphere, into the oceans and seas.它使地球把曾经存在于大气层中的有害气体溶解在海洋里。

高三英语一轮复习优质学案11：Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy: the science of the stars重点单词1．harmful adj.有害的[经典例句]Experts point out that fruit juices can be harmful to children’s teeth.(牛津P803)专家指出果汁可能损害儿童的牙齿。

①Some boys are too crazy about playing games on the computer, which is veryharmful(harm) to their health.有些男生对玩电脑游戏简直到了痴迷的程度，这对他们的健康非常有害。

②These days, breaking traffic rules and littering are not uncommon,causing/doingseriousharmtolife and the environment. (2013·安徽高考书面表达) 这些天，违反交通规则和乱扔垃圾的现象很常见，对生活和环境造成了严重的破坏。

③If you want to solve the problem in this way, thereisnoharmincallinghim.如果你想以这种方式来解决问题，你不妨给他打个电话。

2．exist vi.存在；生存[教材原句]They laid eggs too and existed on the earth for more than 140 million years.它们也生蛋，在地球上生存了一亿四千多万年。

Thereexists a generation gap between the young and the old.青年人和老年人之间存在着代沟。

②You can’t imagine what difficulty they have existing on the money he’s earning.你无法想象他们靠他挣的那点钱维持生活是多么的困难。

高考英语一轮复习 Unit 4 Astronomy学案新人教版必修3

Unit 4 Astronomy：the science of the stars天文学：恒星科学晨读·记忆Explore MKIIMKII, a planet billions of kilometers away, is the origin of life in many religions. Physicists have proved the theory that its gentle climate and the pull of its gravity are similar to the earth’s. And astronomers have found that oxygen atoms and carbon dioxide, which are fundamental to life, exist in its atmosphere through satellites. Cheered up by this news, biologists, in their turn, began to do some research to remove people’s puzzles—Now that there are some suitable conditions, does life really exist on this globe? Do they multiply by laying egg s or giving birth to babies?Last month, a spaceship was sent there. It’s a pity that this mission failed. Unlike the earth, MKII is a much younger planet. Thus, masses of harmful acid clouds float everywhere causing violent chain reactions to break out. These clouds not only blocked out the pilots’ sight but also damaged the engine system. Luckily, the pilots watched out carefully and prevented the spaceship from crashing in time.探测MKII行星MK二号是一颗几十亿公里外的行星，它在许多宗教里都是生命起源的地方。

高三英语一轮复习精品学案：Unit 4 Astronomy：the science of the stars(1)

必修三Unit 4 Astronomy：the science of the starsⅠ.阅读理解(2018·石家庄高三复习教学质量检测一)The brightest object in the evening sky after the sun and the moon isn’t a star，but a planet.I t’s Venus(金星)，our closest neighbor and the second planet from the sun.Venus is so bright that you can see it both at night and in the early morning.This caused some confusion for ancient Egyptian(埃及的) and Greek(希腊的) star observers.Because they saw Venus at two different times，they thought it was two different planets.What makes Venus so bright？Huge clouds of 20 miles thick，completely surround it and reflect 75% of the light from the sun that strikes them.For a long time，these clouds caused Venus to be a great mystery(谜) to the world’s astronomers(天文学家).If，like other clouds，the ones on Venus were made up of water vapors(水蒸气)，could there not be life hiding beneath them on the planet？Were there “Venusians(金星人)” waiting to communicate with us on Earth?It was an exciting thought，but on that the Mariner recently landed to rest.The Mariner thoroughly examined Venus and its atmosphere，only to find that the cloud cover was made mostly of deadly carbon dioxide(二氧化碳) gas.The atmospheric pressure was 15 to 22 times greater than on Earth，which further disproved the theory of life on Venus.And what did the Mariner find under the clouds？A world of great mountains and smooth areas，dry as a bone.The temperature is abut 900.That’s hot.Although the greatest mystery has been solved，there are still others waiting for us on Venus.Why does Venus rotate so slowly？What is the inside of Venus like？And most important of all，why is there no water on Venus？If，as it was thought，it was formed about the same time as our planet，it should have water.These questions and others may some day be answered.Until then，Venus will continue to be the brightest mystery in the sky.1.Venus is very bright because ________.A.the clouds surrounding it take in 75% of the sunlight striking themB.the clouds surrounding it throw back 3/4 of the sunlight striking themC.75% of the clouds surrounding it are made up of water vaporsD.3/4 of the clouds surrounding it are made up of carbon dioxide gas『答案』B[细节理解题。

高三英语一轮复习精品学案：(浙江) Unit 4 Astronomy：the science of the stars

Unit 4 Astronomy：the science of the starsⅠ.情景默写1．Their education system (体系)is perfect.2．I hope you will recover soon under this enjoyable climate (气候)．3．It’s reported that the plane crashed (坠落)shortly after take－off.4．Would you like to have a look at the gold chain (链子)and silver anklet here? 5．He pulled (拉)the car door handle and began to get out.6．There are a lot of theories (学说)about the origin of life.7．Look! The small boat is floating (漂浮)on the surface of the water.8．A great block (块)of rock had fallen from the cliff and now blocked the road. 9．Changes in the climate are due to pollution of the atmosphere (大气层)．10．These kittens look exactly alike (一样的)．Can you tell them apart? 11．Spending on military equipment has multiplied (大量增加)in the last five years.12．When travelling in space，the feeling of weight which the force of gravity (万有引力)produces is gone.13．Astronomy (天文学)was one of the subjects in which he had interested himself at college.14．She married at 25 and gave_birth_to (分娩)her first child shortly after. 15．Do remember to watch_out_for (密切注意)cars while crossing the street. 16．Cheer_up (振作起来)! You must believe in yourself and you will get success. 17．Class Three should be responsible for raising the red flag this week in_its_turn (轮到)．18．Only by practising time and time again can you get_the_hang_of (掌握)thegrammar rules.19．Last night，Mrs.Green had a heart attack.But luckily，the doctor came in_time (及时)to save her life.20．A fierce fight broke_out (爆发)between the two brothers just because of a small thing.Ⅱ.词性转换1．The biologist (biology)advanced a new theory of life.2．To be honest，beef tastes better when you boil it gently (gentle)．3．The physicist (physics)has set up a new theory concerning the motion of particles.4．There are fundamental (fundament)differences between your temper and mine. 5．We live in a global (globe)village，but this doesn’t mean that we all behave in the same way.6．He often says that he doesn’t believe in any religion but meanwhile he respects others’ religious freedom.(religion)7．Do you believe the existence of ghosts? Perhaps they only exist in the minds of some people.(exist)8．Last night we had a discussion，which became more and more violent．Finally we reached an agreement that we will never use violence whatever happens.(violent) 9．There was a puzzled look on the little girl’s face because a puzzling problem puzzled her.(puzzle)10．Playing computer games will not only do harm to your physical health，but it is also harmful to your mental health.So there is no harm in advising you to give it up.(harm)1．句型公式：倍数＋as＋形容词或副词原级＋as杰西卡付出的时间和精力是以前的三倍，所以我相信她这次能成功。

英语一轮复习学案：Unit4 Astronomy：the science of thestars

Unit 4 Astronomy：the science of the starsⅠ.阅读理解(2018·湖州高三调研)A tiny lizard(蜥蜴) has been clingingto the wall behind me for TWO HOURS.I want to change theTV channel，but I feel I ought to at least ask him.I know I’m alot bigger than the lizard but I can’t help myself.It’s not just me.This morning，a female neighbor ran screaming out of her room after finding a terrifying creature waiting inside.An ant.But she wanted to be alone. Humans，I believe，should never kill bugs.Not for religious reasons.Mostly because they get back at us horribly.They have cosmic justice on their side，you see.I’ve come across several news stories about guys who try to kill bugs and end up destroying their home s instead.Have you noticed it’s always guys？On the day I wrote this，the Man vs Bug news of the day involved an American guy from Seattle who tried to kill a spider using a can of spray paint and a cigarette lighter.He ended up torching his rental home，causing US $60 000 worth of damages.In another Man vs Bug incident，this time in Japan，a man was so annoyed by a mosquito that was disturbing his nap that he emptied a can of bug spray trying to get it.Then he decided to light his cigarette.The resulting explo sion caused his parents’ house to go up in flames.These two stories could also serve as effective anti－smoking ads.Let’s hope that in both cases，the men at least successfully managed to get rid of the offending insects.If not，it would be an EPIC_FAIL．What do these tales teach us？The lesson is clear.If you offend against the Universe，such as the attempted murder of an innocent bug，then cosmic justice will ensure that you pay the price.I like cosmic justice.I think it makes life fair.So I am going to wait until this show ends before changing the TV channel，just in case I annoy the lizard.【语篇导读】本文是一篇夹叙夹议文。

高三英语一轮复习精品学案：Unit 4 Astronomy：the science of the stars(1)(1)

Unit 4 Astronomy：the science of the starsⅠ.单词默写1．The problems of excessive (过度的) energy consumption，climate(气候) change and population growth have been described in a book by the American writer Thomas L．Friedman.(2018·浙江卷)2．The Transition is now going through crash(碰撞)tests to make sure it meets federal safety standards.(2017·全国卷Ⅱ)3．These include custom－made navigation(导航)tools，night vision systems(系统)and intelligent speed adaptations.(2017·全国卷Ⅲ)4．Worse still，being addicted to cell phones might als o lead to teenagers’ poor performance at school，thus(因此)adding to the elders’ worries.5．His gentle(温和的)smiles and ready hands have always been our best prides. 6．The finals of the match were going on in an exciting atmosphere(气氛) and won hearty applause at times.7．His brother received a degree of astronomy(天文学) when he graduated from college.8．You’d better pull(拉；拖) your car over to the side of the road if you must answer a phone call.9．Some fundamental(基本的) mistakes are not allowed to make when you are doing the work.10．Unlike(不像) most people in the office who come to work by car，I usually come to work by bus.11．If you multiply(乘)two and three, you will get six.12．Oxygen(氧气)is a kind of gas that is necessary for animals and plants to live.13．The you ng man knows little about Newton’s law of gravity(重力)．14．The smell of new bread floated(飘动) up from the kitchen.Ⅱ.词性转换1．He often says that he doesn’t believe in any religion(religious) and only believes in himself.2．The factory gives off harmful gases.They may do harm to our health.(harm) 3．Do you believe the existence of ghosts? Perhaps they only exist in the minds of some people.(exist)4．The puzzled look on her face suggested she was puzzled about the puzzling math problem.(puzzle)5．The robbers hit them violently．They couldn’t bear it any more so they decided to answer violence with violence and began their violent fightback.(violent)Ⅲ.短语填空1．When the Chinese women volleyball team turned up，all the fans cheered_up(感到振奋)．2．Please tell me when Mr.Smith is arriving at the train station so that I can pick him up in_time(及时)．3．Once he has made up his mind，no one can prevent him from(阻止)carrying out the plan.4．At last the firefighters put out the fire in the supermarket，which broke_out(突发；爆发)at ten this morning.5．You’ve made me suffer in the past，so now you，in_your_turn(轮到你)，suffer again!6．She married at 17 and gave_birth_to(分娩)her first child shortly after.7．She bought a heavy curtain to block_out(挡住)the light.1．句型公式：形式宾语it我理所当然地认为他会帮助我们。

高三英语一轮复习 Unit 4 Astronomy：the science of the stars

高三英语一轮复习 Unit 4 Astronomy：the science of the stars精品同步练习新人教版必修3 Ⅰ.多项选择1．Stay away from Lynch.He’s a liar.You’ll be cheated if you don’t __________.A．break out B．watch outC．take off D．set off解析：选B。

句意：离林奇远点。

他是个骗子。

你要是不小心会被骗的。

watch out注意，当心，符合句意。

break out突发，爆发；take off起飞；set off出发，动身。

2．The top leaders of the two countries are holding talks in a friendly__________.A．atmosphere B．stateC．situation D．phenomenon解析：选A。

句意：两国高层领导人之间的会谈在友好的气氛中举行。

atmosphere气氛；state状态；situation处境；phenomenon现象。

由句意可知A项正确。

3．The woman’s illness __________ all the doctors in this hospital；they couldn’t find the cause.A．prevented B．puzzledC．exhausted D．consulted解析：选B。

句意：那位妇女的病难倒了医院的所有医生，他们找不出病因。

puzzle(使)迷惑，(使)为难。

prevent阻止；exhaust用尽，耗尽；consult咨询，请教。

4．There was a __________ quarrel between the husband and the wife；after that the wife left home and never came back.A．sensitive B．seriousC．violent D．strict解析：选C。

英语一轮复习学案：Unit4 Astronomy：the science of the star学案

Unit 4 Astronomy：the science of the starsGRAMMAR主语从句【语境展示】观察下面句子，并试着归纳主语从句的用法要点。

1. That he had finished writing the composition in such a short time surprised us all.2. Whether the plan is to be carried out still needs to be discussed.3. Who will go to the energy conference is not important.4. What I wanted was a few days’ rest.5. Which hotel he is staying at is unknown to us.6. When the sports meeting will be held has not been decided yet.7. Where we should leave the garbage is a problem.8. Why he isn’t here today is a mystery.9. How the man died puzzled us all.【自我归纳】在复合句中，担任主语的从句叫主语从句（句1—句9）。

引导主语从句的词有：连词that, whether（句1、句2）；连接代词who, what, which （句3—句5）；连接副词when, where, why, how（句6—句9）等。

一、由连词that, whether引导的主语从句1. that引导主语从句时，无实际意义，只起连接作用，不充当任何句子成分，当它引导的主语从句置于句首时，that不能省略（句1）。

2. whether意为“________”，不可以省略（句2）。

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