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1、新课标人教版课件系列 高中英语 必修3-4.7 Unit 4 Astronomy: the science of the stars How Life Began on the Earth Period 1 Science Science SubjectsSubjects Physics Chemistry Biology Geology Mathematics Medicine Biochemistry Geophysics Astronomy AstronomyAstronomy is the scientific study of the universe and the heaven
2、bodies (such as the sun, the moon, and stars), gas, and dust within it. astronomerastronomer The Big BangThe Big Bang The Solar systemThe Solar system eight planets many comets other objects WaterWater AirAir LifeLife Water is the headspring of Water is the headspring of life.life. ? A cloud of dust
3、 Combine into a solid ball Explodewith fire less than 70 kg Calm, mature, hard-working l What have you learnt from the great scientist? l What qualities should a scientist have? What should you do now in preparation for becoming an astronaut or scientist? Brainstorming for writing What will we meet
4、on the moon? when wherewhat who problems Solution How to write an outline? Outline (main idea) The first paragraph (introduction) Body (your own ideas on the item) Conclusion (summing up) heading Homework 1. Search more information on Shenzhou 5 billions of galaxies, in a universe that is infinite a
5、nd expanding; big bang; black hole; a dark matter; a possible Big Crunch. Learning to understand what we see. 1._ the universe is like has attracted Stephen Hawking all his life. 2._ is clear and simple about the universe has always seemed too difficult for us to answer. 3._ the universe exists the
6、way it does is a major question to all those who have looked at stars like Hawking. 4._ has developed over two thousand years of observation has to be greatly revised. 5._ in the universe we live is not the centre, but one of the mine planets orbiting the sun, which is just one of millions of stars
7、in our own Milky Way galaxy. What What Why What where 6. _ we understand the universe is the time when we human beings will have answered all the questions. 7. _ we can have a complete picture of the universe depends on learning to understand what we see. 8. _ Hawking wants to tell us in this text i
8、s that we should study the universe, and understand it. When How What 做主语用的名词性从句，因其在复合句中做主 语，又称主语从句，引导主语从句的有从属连 词that, whether， 连接代词who, what, which， 连接副词when, where, how, why等。 1.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. Tha
9、t he will come is certain. 2)连接代词who ，what ，which, whatever, whichever, whoever What seems easy to some people seems difficult to others. Which side will win is not clear. 由whether及其他连词引导的主语从句 放在句首，句后都可。 Whether it will please them is not easy to say. Whether shes coming or not doesnt matter too muc
10、h. 3)连接副词when，where， how， why等。 Why he did it remains a mystery. When they will start is not known yet. How he became a great scientist is known to us all. 2.位置： 主语从句可以前置，也可以后置 。用it做形式主语，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 表语：（名词， 形容词，过去分词） It is certain that she will do well in her exam. It
11、is true that I told her everything. It is a pity that we cant go. It is no surprise that our team should have won the game. It is an honour that I was invited to attend the meeting. It is said that Mr. Green has arrived in Beijing. It is reported that China has sent another manmade earth satellite i
12、nto orbit. 2）It+不及物动词或短语+主语从句 It seemed (happened, doesnt matter, has turned out) that It happens that they were absent. It seems that Alice is not coming to the party at all. It doesnt matter whether she will come or not. It makes no difference where we shall have the meeting. 3) It +及物动词（被动语态）+主语从
13、句 It has been decided that the exhibition will not open on Sundays. 注意: 1）主语从句在句首时，必须由连接词引 导，不能省略这些连接词；但是如果用it 做形式主语，而把主语从句放在句末时， 从属连词that可以省略。 误：They should like each other is natural. 正：That they should like each other is natural. 正：It is natural that they should like each other. 2)如果主语从句放在句首，不能用i
14、f引 导，但是如果用it 做形式主语，而把主 语从句放在句末时，也可以用if引导. 误：If Mary really heard him is really doubtful. 正：It was doubtful if Mary really heard him. 1.I have always been honest and straightforward, and it doesnt matter _that Im talking to. A. who is it B. who it is C. it is who D. it is whom 2. It is pretty well un
15、derstood _ controls the flow of carbon dioxide in and out the atmosphere today. A. that B. when C. what D. how 3. _ made the school proud was_ more than 90 of the students had been admitted to key universities. A. What; because B. What ; that C. That ; what D. That ; because 4. _ we will go camping tomorrow depends on the weather. A. If B. Whether C. That D. Where 5. _ that they can pass the written exam this time. A. That is hoped B. It is hoped C. It hopes D. That hopes 6. It was doubtful _ Mary really heard him. A. that B. if C. whether D. what Reading comp
