2019届一轮复习人教版必修三Unit4 16页

‎2019届一轮复习人教版必修三Unit 4Astronomy:the science of the starsPeriod 1Reading单元学案设计 学习目标 ‎1.Understand the theory about the origin of the universe and life on the earth—the “Big Bang” theory.‎ ‎2.Learn to concern about the future of life on the earth.‎ 思考导引 How the universe began.‎ 课堂探究 ‎1.Skimming What is the main idea of the text?‎ ‎2.Scanning ‎ Which paragraphs are the questions mentioned in?‎ ‎(1)How old is the earth?‎ ‎(2)How does the universe begin?‎ ‎(3)Is there any water in the Mars?‎ ‎(4)When did dinosaurs disappear?‎ ‎(5)Which animal is the most important one on the earth?‎ ‎3.Intensive reading Task 1 Read the passage carefully and analyse its structure.‎ Main Body Task 2 Put the order of development of life into a timeline.‎ ‎(　　)1　Insects and amphibians appeared.‎ ‎(　　)2　Dinosaurs appeared.‎ ‎(　　)3　The earth became a solid ball.‎ ‎(　　)4　Small plants grew on the water.‎ ‎(　　)5　Reptiles appeared.‎ ‎(　　)6　Plants began to grow on dry land.‎ ‎(　　)7　The earth was a cloud of dust.‎ ‎(　　)8　Water appeared on the earth.‎ ‎(　　)9　Shellfish and other fish appeared.‎ ‎(　　)10　The universe began with a “Big Bang”.‎ ‎(　　)11　Clever animals with hands and feet appeared.‎ ‎(　　)12　Mammals appeared.‎ Task 3 After reading the passage,discuss the following questions.‎ ‎1.Why was the earth different from the other planets?‎ ‎ ‎ ‎2.Why is it wrong to show films with dinosaurs and people together?‎ ‎ ‎ ‎3.What problem is caused by human beings?‎ ‎ ‎ 课堂提升 Summary After the “Big Bang”,the earth was still just a cloud of 　　　　.It 　　　　loudly with fire and rock,which were 　　　　 to produce 　　　　,nitrogen,water vapour and other gases.Then 　　　　 began to appear on its surface. ‎ ‎　　 which grew on the water are considered to be the earliest lives on the earth.The oxygen they supplied encouraged the lives of 　　　　.Slowly green plants grew on land,which were followed by 　　　　 like insects and 　　　　.When the plants grew into 　　　　,　　　　 appeared.Then 　　　　 developed but disappeared later,which made the rise of a totally different kind of animal,　　　　,possible,and finally 　　　　 spread all over the world. ‎ Discussion ‎ ‎1.Do we human beings look after the earth well?What problems have been caused by human beings to the earth?‎ ‎2.As a student,what little things can we do for the earth?Design an activity on Earth Day.‎ ‎◆What the activity is about ‎ ‎◆Why the activity is designed ‎◆When and where to do the activity ‎ ‎◆Who takes part in the activity ‎◆What to be done in the activity ‎◆...‎ 课后作业 ‎1.Search the Internet for the information of the development of life.‎ ‎2.Read the text again and find out your difficult points.‎ 参考答案 课堂探究 ‎1.Skimming How life began on the earth.‎ ‎2.Scanning ‎(1)Para.2　(2)Para.1　(3)Para.3　(4)Para.4　(5)Para.5‎ ‎3.Intensive reading Task 1‎ Main Body Task 2‎ ‎8,10,3,5,9,7,2,4,6,1,12,11‎ Task 3‎ ‎1.Because the water remained on the earth.‎ ‎2.Because dinosaurs died out long before human beings developed on the earth.‎ ‎3.Human beings cause global warming.‎ 课堂提升 Summary dust;exploded;in time;carbon dioxide;water;The small plants;shell fish and all sorts of fish;land animals;amphibians;forests;reptiles;dinosaurs;mammals;human beings ‎【二】Period 2Language points单元学案设计 学习目标 ‎1.Master the usages of such important words and expressions as:exist,puzzle,in time,in one’s turn,prevent...from,cheer up,break out,watch out;learn to express yourself by using them.‎ ‎2.Learn the method of constructing knowledge trees through self-study and cooperative exploration.‎ ‎3.Enjoy the fun of expressing yourself by using English and participate in class with a strong passion.‎ 课堂探究 一、词汇精粹 学习建议:根据所列例句,理解并尝试总结下列词汇的用法。‎ ‎1.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。‎ ‎【观察思考】‎ ‎(1)Fish can’t exist out of water.鱼离开了水无法生存。‎ ‎(2)Do you believe the existence of ghosts?Perhaps they only exist in some people’s imagination.‎ 你相信鬼魂的存在吗?或许他们只存在于一些人的想象里。‎ ‎(3)The hostages (人质)existed on bread and water.人质靠水和面包生存。‎ ‎(4)There exist many ancient temples of this kind on the shores of the Mediterranean.‎ 在地中海沿岸地带,有许多这样的古庙。‎ ‎(5)As time went on,the small town came into existence.‎ 随着时间的流逝,这个小城镇形成了。‎ exist vi.存在;生存 ‎(1)存在于……　　　　　　　 ‎ ‎(2)靠……为生　　　　　　　 ‎ ‎(3)某地存在……　　　　　　　 ‎ ‎(4)开始存在;成立　　　　　　　 ‎ ‎2.puzzle n.谜;难题　vt.&vi.(使)迷惑;(使)为难 ‎【教材原句】 How life began on earth is one of the biggest puzzles that scientists found hard to solve.地球上的生命是如何起源的是科学家们最难以解答的问题之一。‎ ‎【观察思考】‎ ‎(1)What puzzles me was why they didn’t take her advice.‎ 使我大惑不解的是他们为什么没有接受她的建议。‎ ‎(2)They puzzled over the question for quite a while.‎ 这问题他们苦苦思索了很久。‎ ‎(3)The present situation is puzzling,and we are all puzzled about what will happen in the days to come.目前的形势令人困惑,我们都对未来几天将会发生什么感到困惑。‎ ‎(1)puzzle over 　　　 ‎ ‎(2)对……迷惑不解　　　 ‎ ‎(3)puzzling adj.　　　 ‎ ‎(4)puzzled adj.　　　 ‎ 二、短语集锦 ‎1.in time 及时;终于 ‎【教材原句】 They were in time to produce carbon dioxide,nitrogen,water vapour and other gases,which were to make the earth’s atmosphere.它们最终产生了碳、氮气、水蒸气和其他多种气体,从而形成了地球的大气层。‎ ‎【观察思考】‎ ‎(1)You are lucky to be in time for our party.你很幸运能及时参加我们的聚会。‎ ‎(2)He made it in time when he failed thousands of times.‎ 当失败了成千上万次后,他终于成功了。‎ ‎【联系拓展】(1)He could not come on time because of the traffic jam.‎ 因为交通堵塞,他不能准时(按时)到了。‎ ‎(2)At no time should we give in to difficulties.我们在任何时候都不能向困难屈服。‎ ‎(3)The bus was filled with students in no ‎ time.这辆公共汽车很快就被学生挤满了。‎ ‎(1)in time 　　　 ‎ ‎(2)按时;准时　　　 ‎ ‎(3)立即;马上　　　 ‎ ‎(4)从不;绝不　　　 ‎ ‎2.in one’s 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,它们接着成为了这个行星上最重要的动物。‎ ‎【观察思考】‎ Now that I have finished buying,Tom,in his turn,should cook.‎ 既然我已经完成了采购,就该轮到汤姆来做饭了。‎ ‎【联系拓展】‎ ‎(1)We protect the environment and in turn it benefits us a lot.‎ 我们保护环境,反过来保护环境会使我们受益匪浅。‎ ‎(2)The children called out their names in turn.孩子们依次自报姓名。‎ ‎(3)We took turns to drive the car on the way.‎ 在路上我们轮流开车。‎ ‎(4)It is your turn to do the experiment.轮到你做实验了。‎ ‎(1)反过来,转而;依次;轮流;逐个　　　 ‎ ‎(2)轮流做……　　　 ‎ ‎(3)轮到某人做某事　　　 ‎ ‎3.prevent...from...阻止;制止 ‎【教材原句】 They are putting too much carbon dioxide into the atmosphere,which prevents heat form escaping from the earth into space.‎ 他们把过多的二氧化碳释放到大气层中,这使得地球上的热不能释放到太空中去。‎ ‎【观察思考】‎ He said this would prevent companies from creating new jobs.‎ 他说这将阻止各公司创造新的职位。‎ ‎【联系拓展】‎ ‎(1)We should try our best to stop the West Lake (from)being polluted.‎ 我们应该尽力阻止西湖被污染。‎ ‎(2)We’ll be prevented / stopped / kept from finishing our experimental programme.‎ 我们将被阻止完成实验性项目。‎ 阻止……干某事:‎ ‎(1)　　　 ‎ ‎(2)　　　 ‎ ‎(3)　　　 ‎ ‎4.cheer up感到高兴;感到振奋;使高兴起来 ‎【教材原句】 I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon ‎ larger.我立刻感到很高兴,由于失重我在太空舱里飘来飘去,我望着(身后的)地球越来越小,而(前方的)月球越来越大。‎ ‎【观察思考】‎ ‎(1)Cheer up! Our troubles will be over soon.振作起来!我们的困难很快就会过去。‎ ‎(2)When I’m feeling sad my mother tells me funny stories to cheer me up.‎ 当我感到忧伤时,我的母亲就会给我讲有趣的故事让我高兴起来。‎ ‎【联系拓展】 We did our best to cheer him on when he was about to give up.‎ 当他将要放弃时我们尽力鼓励他。‎ ‎(1)(使)感到高兴;(使)感到振奋　　　 ‎ ‎(2)(赛跑比赛中)以喝彩声鼓励某人;为某人加油　　　 ‎ ‎(3)cheerful adj.　　　 ‎ ‎5.break out (火灾,战争,疾病)突发,爆发 ‎【教材原句】 We watched,amazed as fire broke out on the outside of the spaceship as the earth’s 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。‎ ‎【观察思考】‎ He was 29 when the war broke out.战争爆发时他29岁。‎ ‎【辨析】 break out/take place/happen ‎　　意为“发生、爆发”,常指战争、灾难、疾病或者争吵等事件的发生,也可以表示突然大声叫喊等。 ‎ ‎　　指某事按照计划进行或者按照计划发生,此外还有“举行”之意。 ‎ ‎　　一般用于偶然或突发性事件。 ‎ ‎(1)The party will take place on Sunday,rain or shine.‎ 不管下雨还是阳光明媚,聚会将在周日举行。‎ ‎(2)The plane crash happened only minutes after take-off.飞机起飞几分钟后就坠毁了。‎ ‎【联系拓展】‎ 逃脱;脱离　　　　　　　　　 ‎ 出故障;垮掉　　　　　　　　　 ‎ 强行进入;打断　　　　　　　　　 ‎ 强行闯入;突然开始　　　　　　　　　 ‎ 断开;中断;停顿　　　　　　　　　 ‎ 突破;冲破　　　　　　　　　 ‎ 破碎;解散;分手　　　　　　　　　 ‎ ‎(1)They broke away from the national union and set up their own organization.‎ 他们脱离了总工会建立了他们自己的组织。‎ ‎(2)The printing machines are always breaking down.这些打印机总是出故障。‎ ‎(3)Thieves broke in and stole the computer equipment.‎ 小偷破门而入盗走了电脑设备。‎ ‎(4)Her house was broken into last week.上周有人闯入了她的家。‎ ‎(5)I broke off the conversation and answered the phone.‎ 我中断了谈话去接听电话。‎ ‎(6)The sun soon broke through the mist.‎ 太阳很快就突破了云雾的包围。‎ ‎(7)He lost his job and his marriage broke up.‎ 他失业了并且婚姻破碎了。‎ ‎6.watch out密切注意;当心;提防 ‎【教材原句】 You’ll be cheated if you don’t watch out.如果你不小心,就会上当受骗。‎ ‎【观察思考】‎ ‎(1)Watch out! The milk is boiling over.小心点儿,牛奶沸腾溢出来了。‎ ‎(2)Watch out for any sign of unhappiness in yourself.‎ 一定要密切关注你自身出现的不高兴的迹象。‎ ‎【联系拓展】 There must have been an angel watching over me that day.‎ 那天一定有天使在帮我。‎ ‎(1)密切注视;当心;提防　　　　　　　　　 ‎ ‎(2)留意　　　　　　　　　 ‎ ‎(3)照顾;监督;保护　　　　　　　　　 ‎ 课堂练习 ‎1.Fish can’t be existed without water.(改错)‎ ‎2.We’ll be prevented finishing our experimental programme.(改错)‎ ‎3.We watched,amazed as fire was broken out on the outside of the spaceship.(改错)‎ ‎4.The present situation is 　　　　(令人困惑的),and we are all 　　　　(感到困惑)about what will happen in the days to come. ‎ ‎5.We protect the environment and 　　　　(反过来)it benefits us a lot. ‎ ‎6.　　　　(密切关注)any sign of unhappiness in yourself. ‎ 课后提升 挑战一　小试牛刀 ‎1.You will succeed in time as long as you don’t give up.(translation)‎ ‎ ‎ ‎2.我们要尽最大的努力阻止河流被污染。‎ ‎ ‎ ‎3.警告乘客当心小偷。‎ ‎ ‎ ‎4.用break的相关短语填空 ‎(1)He 　　　　 my house and stole my money. ‎ ‎(2)Once you join them,you can never 　　　　 from them. ‎ ‎(3)If you go on working like this,you will 　　　　 sooner or later. ‎ ‎(4)Please don’t 　　　　 on our conversation. ‎ ‎(5)The Second World War 　　　　 in September 1939. ‎ ‎(6)Scientists say they’re beginning to 　　　　 in the fight against cancer. ‎ ‎(7)Their marriage is 　　　　. ‎ ‎5.We suggest that they provide an effective warning system to 　　　　 many of the disasters 　　　　. ‎ A.keep;breaking out B.prevent;from happening C.stop;from being happened D.prevent;from taking place ‎6.—I’m thinking of the test tomorrow.I’m afraid I can’t pass this time.‎ ‎—　　　　! I’m sure you will make it. ‎ A.Go ahead B.Hurry up C.No problem D.Cheer up ‎7.People try to avoid public transport delays by using their own cars,and this 　　　　creates further problems. ‎ A.in case B.in return ‎ C.in turn D.by turns ‎8.Facing the 　　　　 situation,the sales manager looked 　　　　. ‎ A.puzzling;puzzled ‎ B.puzzling;puzzling C.puzzled;puzzling ‎ D.puzzled;puzzled 挑战二　走进生活 假设你到太空旅游,请你用本节课所学的知识描述你的太空之旅。‎ 课后作业 ‎1.Master what we have learned today.‎ ‎2.Make sentences by using each word or phrase.‎ 参考答案 课堂探究 一、词汇精粹 ‎1.【归纳总结】‎ ‎(1)exist in ‎(2)exist on ‎(3)there exist(s)...‎ ‎(4)come into existence ‎2.【归纳总结】‎ ‎(1)冥思苦想;苦苦思索 ‎(2)be puzzled about ‎(3)令人迷惑的 ‎(4)感到迷惑不解的 二、短语集锦 ‎1.【归纳总结】‎ ‎(1)及时;终于　(2)on time　(3)in no time　(4)at no time ‎2.【归纳总结】‎ ‎(1)in turn ‎(2)take turns to do sth.‎ ‎(3)It is one’s turn to do sth.‎ ‎【归纳总结】‎ ‎(1)prevent+宾语+(from)‎ ‎(2)stop+宾语+(from)‎ ‎(3)keep+宾语+from ‎4.【归纳总结】‎ ‎(1)cheer up ‎(2)cheer sb.on ‎(3)快乐的;高兴的 ‎5.【辨析】break out take place happen ‎【联系拓展】‎ break away from break down break in break into break off break through break up ‎6.【归纳总结】‎ ‎(1)watch out ‎(2)watch out for sth.‎ ‎(3)watch over 课堂练习 ‎1.be existed改为exist ‎2.prevented后加from ‎3.was broken改为broke ‎4.puzzling;puzzled ‎5.in turn ‎6.Watch out for 课后提升 挑战一 ‎1.只要不放弃,你总有一天会成功的。‎ ‎2.We should try our best to prevent the river from being polluted.‎ ‎3.Passengers are warned to watch out for thieves.‎ ‎4.(1)broke into　(2)break away　(3)break down　(4)break in　(5)broke out　(6)break through　(7)breaking up ‎5.B　6.D　7.C　8.A ‎ ‎【三】Period 3Learning about language单元学案设计 学习目标 ‎1.Introduce a visit to the moon and train students’ reading ability.‎ ‎2.Accumulate common knowledge about astronomy through the author’s experience,self-directed study and cooperation.‎ ‎3.Be interested in astronomy by expressing yourself in English. ‎ 学习过程 Ⅰ.Reading activity 浏览文章内容,把握阅读速度;结合插图,猜测文章大意。‎ Task 1 Fast reading ‎1.Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping.‎ The way gravity changed Left the earth ‎(1)‎ In space ‎(2)‎ On the moon ‎(3)‎ ‎2.Read the passage carefully and then describe how his weight changed.‎ The weight changed Left the earth ‎(1)‎ In space ‎(2)‎ On the moon ‎(3)‎ Task 2 Careful reading ‎1.It will not be as strong a pull as the earth’s.‎ ‎(1)翻译本句　。 ‎ ‎(2)在as...as...结构中第一个as是　　　　(词性),因此后面可以跟　　　　、　　　　;第二个as是　　　　(词性)。 ‎ ‎2.But when I tried to step forward,I found I was carried twice as far as on the earth and fell over.‎ ‎(1)翻译本句 ‎ ‎ ‎ ‎(2)通过本句总结倍数的表达方式: ‎ Ⅱ.Writing ‎ 学习建议:请根据写作指导完成写作任务。‎ If you were given the chance to travel to the moon,what problems do you think you would face?List one of the problems and think of a solution to solve it.‎ Requirements:‎ ‎1.First list the problem you might have on the moon.‎ ‎2.List the possible solution.‎ ‎3.How the solution help solve the problem.‎ ‎4.The writing must be written about 120 words.‎ ‎ ‎ ‎ ‎ According to the above points,make an outline about the passage of expository writing:solving a problem.‎ ‎ ‎ ‎ ‎ A.Discuss with your partners how to solve your problem and then enrich your content.In the meanwhile,look up some new words in the dictionary.‎ ‎ ‎ ‎ ‎ B.Please finish the composition according to the above outline.‎ ‎ ‎ ‎ ‎ C.After finishing your writing,swap your composition with your partners and correct mistakes.‎ D.Hand in your composition.‎ 好词好句 ‎1.I would be happy to accept the chance to...我非常高兴接受这样的机会……‎ ‎2.If I visited the moon,perhaps I would face many problems.(虚拟语气)如果我登上月球,或许我会面临许多问题。‎ ‎3.As far as we know据我们所知 写作要求:短文连贯,词数120左右,限时15分钟完成。‎ 写作正文 ‎ ‎ ‎ ‎ 课后作业 Polish your composition and hand it in.‎ 参考答案 学习过程 Ⅰ.Pre-reading activity Task 1‎ ‎1.(1)The gravity became very strong.‎ ‎(2)The gravity disappeared.‎ ‎(3)It became very light.‎ ‎2.(1)He became very heavy.‎ ‎(2)He had no weight and could float around like a feather.‎ ‎(3)He was about one-sixth of his weight on the earth.‎ Task 2‎ ‎1.(1)月球的引力不像地球的引力那么大。(2)副词;形容词;副词;连词 ‎2.(1)当我试着向前迈步时,我发觉我被送出去很远,步子的跨度竟是地球上的两倍,因而,我摔倒了。(2)A+is+倍数+as+adj./adv.+as+B Ⅱ.Writing 参考范文 I would be happy to accept the chance to travel to the moon.But if I visited the moon,perhaps I would face many problems.One of the problems I might have:How should I stop my food floating away.I would have to take all my food with me if I went to the moon.As far as we know,in the spaceship there is no gravity so the food would float around if it was solid.So I would make sure that it is specially made as liquid space food.I can put my liquid space food in a cub and then I would be able to eat it more easily.Perhaps I would use a straw to eat it.It would solve the problem.‎ ‎【四】Period 4Grammar单元学案设计 学习目标 ‎1.Master the basic usage of noun clauses as the subject.‎ ‎2.Learn to use the noun clauses as the subject in real situations through self-study and practice.‎ ‎3.Be absorbed in English study and enjoy the beauty of English.‎ 学习过程 Ⅰ.主语从句在复合句中作句子的主语 What made her happy was that she won the game in such an important match. ‎ 令她高兴的是在这么重要的比赛中她获胜了。‎ Ⅱ.主语从句的引导词及在句中的功能 ‎1.连词that,whether。‎ ‎(1)that在从句中不作句子成分,只起引导词的作用,没有实际意义,不能省略。‎ That she could come to help us made us very happy.她能来帮助我们使我们很高兴。‎ That the big earthquake had killed many people frightened people all ‎ over the world.‎ 大地震使很多人丧生令世界震惊。‎ ‎(2)whether在从句中不充当任何成分,只起引导词的作用,但有“是否”之意,也不可以省略。‎ Whether we go by train or by boat makes no difference.我们乘火车还是乘船去没有差别。‎ It is still unknown whether the plan will be carried out.这个计划是否会实施还不知道。‎ ‎2.连接代词who,whose,whom,what,which,whichever,whoever,whomever,whatever等在从句中作主语、宾语、表语或定语,每个词都有自己的具体的含义。‎ What is needed for the space trip is careful preparation.太空之旅所需要的就是认真准备。‎ Who will go makes no difference.谁去没有区别。‎ Whatever you do in your spare time should do no harm to others.‎ 无论你在业余时间干什么都不应该伤害他人。‎ ‎3.连接副词when,where,how,why在从句中分别作时间、地点、方式、原因状语。‎ Why dinosaurs died out remains a puzzle.恐龙为什么会灭绝仍然是个谜。‎ Where the English evening party will be held has not yet been decided.‎ 英语晚会将要在哪里举行还没有决定。‎ When we will have a meeting is an important question.我们何时举行会议是个很重要的问题。‎ 连接词有:　　　　　　　　;在句中　　　　　　　　(作/不作)句子成分。连接代词有　　　　　　　　;在句中作　　　　　　　　。 ‎ 连接副词有:　　　　　　　　;在句中作　　　　　　　　。 ‎ Ⅲ.主语从句与形式主语it ‎1.It+be+形容词+主语从句,如:‎ It is uncertain whether he can come to Jenny’s birthday party or not.‎ 他是否能够参加詹妮的生日聚会还不确定。‎ ‎2.It+be+名词(词组)+主语从句,这类名词有:‎ a fact,a pity,a shame,an honour,a question等,如:‎ It’s a pity that you missed the exciting football match.很可惜你错过了激动人心的足球比赛。‎ It remains a question whether he will come or not.他是否会来还是个问题。‎ ‎3.It+be+过去分词+主语从句,这类过去分词有:‎ announced,believed,expected,hoped,decided,reported,said,shown等,如:‎ It is reported that 16 people were killed in the earthquake.据报道,16人在地震中丧生。‎ It is not decided who will give the operation to the patient.谁给病人做手术还不确定。‎ ‎4.It+不及物动词+主语从句,这类不及物动词有:appear,happen,seem等,如:‎ It seemed that he didn’t tell the truth.似乎他没有说实话。‎ It happened that I was out when he called.碰巧他打电话时我出去了。‎ Ⅳ.主语从句的注意事项 ‎1.从句的语序用陈述语序 What you need is more practice.你需要的是更多的练习。‎ ‎2.主谓一致 ‎(1)从句作主语时,主句的谓语一般用单数形式,但what和who引导主语从句时,有时主句谓语的数与主句中作表语的名词的单复数保持一致。‎ What they need are books.他们需要的是书。‎ What they need is love.他们需要的是关爱。‎ ‎(2)如果由and连接两个或两个以上的主语从句作主语时,主句的谓语动词用复数;由两个或两个以上的连接词引导一个主语从句时主句的谓语动词用单数。‎ When they will start and where they will go have not been decided yet.‎ 他们将在什么时间动身以及要去哪里还没有定下来。‎ When and where the meeting will be held has not been decided.‎ 会议将在什么时间以及在哪里举行还没有确定。‎ ‎【自学效果检测】‎ 找出主语从句的引导词,并分析引导词在从句中充当什么成分。‎ ‎1.What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.‎ ‎ ‎ ‎2.Who will go makes no difference.‎ ‎ ‎ ‎3.It was not immediately obvious that water was to be fundamental to the development of life.‎ ‎ ‎ ‎4.Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.‎ ‎ ‎ ‎5.Where the English evening will be held has not yet been decided.‎ ‎ ‎ 课后提升 挑战一　小试牛刀 ‎1.It is likely 　　　　 he is the winner of this game.很可能他是这场游戏的胜利者。 ‎ ‎2. 　　　　 we will build a new high school hasn’t been decided. ‎ 我们是否要建新高中还没决定呢。‎ ‎3. 　　　　 breaks the law should be punished.不管谁违法都应该受到惩罚。 ‎ ‎4. 　　　　 he was born is unknown.他生于何时还不知道。 ‎ ‎5.　　　　　　　　(你刚才告诉我的) was really a surprise. ‎ ‎6.　　　　　　　　(我们如何去那里) is a question. ‎ ‎7.　　　　　　　　(他为什么哭) is not clear. ‎ 挑战二　典题在线 ‎1.　　　　 the delayed flight will take off depends much on the weather. ‎ A.Why B.When C.That D.What ‎2.I think 　　　　impresses me about his painting is the colours he uses. ‎ A.what B.that C.which D.who ‎3.Exactly 　　　　 the potato was introduced to Europe is uncertain,but it was probably around 1565. ‎ A.whether B.why C.when D.how ‎4.Some people believe 　　　　 has happened before or is happening now will repeat itself in the future. ‎ A.whatever B.whenever C.wherever D.however ‎5.　　　　 makes the book so extraordinary is the creative imagination of the writer. ‎ A.That B.What C.Who D.Which ‎6.　　　　 one of you breaks the window will have to pay for it. ‎ A.Whoever B.Whatever C.Whichever D.Wherever ‎7.It remains to be seen 　　　　 the newly formed committee’s policy can be put into practice. ‎ A.that B.which C.what D.whether ‎8.　　　　 you said at the meeting describes a bright future for the company. ‎ A.When B.How C.What D.That ‎9.The limits of a person’s intelligence,generally speaking,are fixed at birth,but 　　　　 he reaches these limits will depend on his environment. ‎ A.where B.whether C.that D.why ‎10.It suddenly occurred to him 　　　　 he had left his keys in the office. ‎ A.whether B.where C.which D.that 课后作业 ‎1.Master what we have learned today.‎ ‎2.Tidy the mistakes in the paper.‎ 参考答案 学习过程 ‎【归纳总结】‎ that,whether,if等;不作;what,whatever,who,whoever,whom,whomever,whose,which,whichever等;从句的主语、宾语、表语或定语等;when,where,how,why;从句的状语等 Ⅳ.【自学效果检测】‎ ‎1.what引导主语从句,在从句中作表语,意思是“什么”。‎ ‎2.who引导主语从句,在从句中作主语,意思是“谁”。‎ ‎3.it作形式主语,真正的主语是that引导的主语从句,that在从句中不作句子成分,没有任何实际意思,只起引导词的作用。‎ ‎4.whether引导主语从句,在从句中不作任何句子成分,意思是“是否”。‎ ‎5.where引导主语从句,在句中作地点状语,意思是“哪里”。‎ 课后提升 挑战一 ‎1.that　2.Whether　3.Whoever　4.When ‎5.What you told me just now ‎6.How we will go there ‎ ‎7.Why he cries 挑战二 ‎1.B　2.A　3.C　4.A　5.B　6.C　7.D　8.C　9.B　10.D