最新人教新课标英语必修3 Unit 4 Astronomy the science of the stars Reading 单词复习导入 汉-英 课件

A. insects and amphibians appear
B. a solid ball
D
B I G
H A C F J
C. reptiles appear
D. a cloud of dust
E. shellfish and other fish appear
F. dinosaurs appear G. small plants grow on the water H. plants begin to grow on dry land I. presence of water J. mammals (including humans )appear
6.What life developed after dinosaurs? mammals on land
7. What life developed after mammals? small clever aney doing on the earth?
Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.
•
2. What is the significance of the presence of water on the earth?
It allowed the earth to dissolve harmful gases into oceans and seas.
Put the order of development of life into a time line.

Unit 4 Astronomy : the science of the stars 教案2(A VISIT TO THE MOON<PART 2>)IntroductionYou are advised to lead in by talking about Tibet which is a wonder for a travel trip. Then help students with their reading of Journey down the Mekong. Translation of the text into Chinese is proposed.Objectives⏹to write an essay to show your problems and the way to overcome themProceduresI. Warming upLet 2-3 students retell the passage learned in the first two periods. Revise some important words and statements.Remind the students of October 15th2003 when Yang Liwei went up into space. (showing pictures or Videos in possible)List the following questions before listening:●What education and experience do you need to become an astronaut?●Do you think there are any special requirements?●What kind of a person makes a good astronaut?●What problems do you think he/she would have in space?(Students report back to the class in fours)II. Listening (P62)Listen to parts 1 and 2. Write down the main idea.Then listen to part 1 finish exercise 3 and part 2 to finish exercise 4.Listen again (if necessary) and fill in the blanks in exercise 5.III. TalkingThis task asks the students to work in pairs and give a friend a number of “dos" and "don'ts" about going into space.Remind the students of having discussed some problems before reading " A VISIT TO THE MOON".Brainstorm a list based on what they remember in pairs.Compare the ideas with another pair and make a report to the class.Make suggestions either to avoid or to solve the problems listed in groups of four. Give some Sample dialogues:IV. Speaking taskThe purpose of this task is to use the information gained from the listening text and reading passage in a new situation.Before the task, work out some questions to ask. For example:●What was the most unexpected thing you found out about "black holes"?●If you cannot see a "black hole", how do you know you have got close to it?●What was the most frightening thing that happened to you on this journey? Prepare the answers to the questions in pairs.Suggested answers to the questions above:●Most unexpected thing: the "black hole" threw out material as well as swallowingobjects.●Knowing when we reached it : You only know you are close to a black hole byseeing things going around what appears to be an empty space. The black hole cannot be seen.●Most frightening experience: when the gravity of the "black hole" was pullingus slowly into its "mouth", and then the spaceship moved around the hole; I was terrified because I thought we would be swallowed by the "hole". Practice the interview in front of the class in pairs.V. ReadingThis reading uses information from the listening text above. It is a science fiction story which imagines what it might be like if an astronaut visited the Moon. Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping and how his weight changed.Suggested sentences:1.The pull of gravity became very strong as he left the earth's atmosphere. Hisweight is normal.2.It disappeared when he was in space. He is weightless.3.It was very light when he was on the moon. He weighs less than on the earth. VI. Reading TaskRemind the students of the knowledge of "black holes".Read the passage to discover the new ideas about "black holes" .VII. Writing taskThe purpose of this writing task is for the students to use the information they have gathered on astronomy and their question to each other to write an interestingand lively newspaper article.Analyze the sample writing on page 67 with the students.Leave a writing task as homework.品味人生1、不管鸟的翅膀多么完美，如果不凭借空气，鸟就永远飞不到高空。

8. Why are mammals different from all
life forms in the past? They gave birth to young baby animals and produced milk to feed them.
Careful reading
Read the passage carefully and
God created the world in seven days.
Nuwa made human beings
The Biblical Account According to Bible , God created the world in seven days. Day 1: God spoke and separated light from darkness creating Day and Night Day 2: God spoke and separated the water creating sky and ocean Day 3: God spoke and created dry land
Careful reading
Fill in the blanks in the following form. Time What happened
Big Bang ______ Atoms began to form and combine to create stars and other bodies.
2. What form was the earth after the ―Big Bang‖? The earth was still just a cloud of dust. 3. What made up the earth’s atmosphere after the earth exploded? Carbon, nitrogen, water vapour and other gases.

UNIT 4 Astronomy: the science of the starsGrammar导学案2学习重点：正确选择关系词并运用主语从句。

学习难点：关系代词和关系副词的用法区别。

课前预习案Previewing Case使用说明及学法指导：1. 自我学习课本29页的内容,完成预习案进行自我检测。

2. 完成时间20分钟。

Task 1 Discussion: Everybody has an amazing mother who gives us life and the whole affection. We thank them very much.Q1：What do you think of your mother? Please share your feelings with us.*I think ____________________________*I wonder_________________________________*I feel _____________________________*I’m sure _________________________________Q2: Do you think you know your mother very well?*What my mother likes is_____________________________________________________*What my mother doesn't like is________________________________________________*What makes my mother happy is_______________________________________________*What my mother needs is_____________________________________________________ Task 2 Listen to a song and fill in the blanks. Here I have given you the lyrics of the song. Although loneliness has always been a friend of mine I'm leaving my life in your hands People say①______I'm crazy and that I am blind Risking it all in a glance②_____ you got me blind is still a mystery I can't get you out of my headDon't care ③____ is written in you history As long as you're here with meI don't care ④____ you are,_____ you're from,____ you didAs long as you love me Who you are Where you're from Don't care ⑤____ you did As long as you love me Every little thing that you have said and doneFeels like it's deep within me Doesn't really matter if you’re on the runIt seems like(as if)⑥_______ we're meant to beTask 3 Revision: Find the subjects in the following sentences.1. A tree has fallen across the road.2. You are a student.3. To find your way can be a problem.4. Smoking is harmful to you.5. What she said is not yet known.6. That we shall be late is certain.7. It’s certain that we shall be late.Conclusion(from 5&6 ): 主语从句：一个句子在________引导下,在另一个句子中充当______(相当于一个___词)的从句。

5. What problem is caused by human beings? Human beings caused global warming.
Read the passage again and underline all the discourse markers and sentence connectors.
Plants began to grow on dry land. Insects and amphibians appeared. Reptiles appeared. Dinosaurs appeared. Mammals appeared. Clever animals with hands and feet appeared.
the rise of _m__a_m__m_a_l_s_
Comprehending
Read the passage carefully and analyse its structure. Write the main idea for each paragraph.
Para. 1 Para. 2 Para. 3
early _s_h_e_l_lf_i_sh__ and all sorts of fish
green plants on land
amphibians
land animals
insects
__r_e_p_t_il_e_s ___
huge animals (dinosaurs)
human beings
carbon nitrogen water vapour _g_a_se_s_
the earth’s _a_t_m__o_sp_h__er_e___

Unit 4 Astronomy: the science of the starsTeaching goals 教学目标1 Target language目标语言a重点词汇和短语preparation, instruction, unexpected, a set of, pay attention to, as well asb交际用语Practice giving instructionsPlease look at/ listen to…Please check that…You need…Please pay attention to…Don’t forget to…You’d better…Make sure you…Watch out for…You mustn’t…2 Ability goals 能力目标a. Enable the Ss to make a list of things that they need.b. Enable the Ss to talk about giving instructions.c.. Enable the Ss to play different roles in a conversation.3Learning ability goals 学能目标a. Learn how to make a list of things that they needb Help the Ss learn how to talk about giving instructionsc. Enable the Ss learn how to play different roles in a conversation. Teaching important and difficult points教学重点难点a. Teach the Ss how to how to talk about giving instructionsb. Help the Ss to learn how to play different roles in a conversation. Teaching methods教学方法a. Pairs work and group workb. Discussion and cooperative learningTeaching aids教具准备1 A computer2 A projectorTeaching procedures & ways教学过程与方式Step I RevisionAsk some of the Ss to read his / her passage about gravity.One possible passage:Sir Isaac Newton: The Universal Law of GravitationThere is a popular story that Newton was sitting under an appletree, an apple fell on his head, and he suddenly thought of theUniversal Law of Gravitation. As in all such legends, this isalmost certainly not true in its details, but the story containselements of what actually happened.What Really Happened with theApple?Probably the more correct version of the story is that Newton,upon observing an apple fall from a tree, began to think alongthe following lines: The apple is accelerated, since its velocity changes from zero as it is hanging on the tree and moves toward the ground. Thus, by Newton's 2nd Law there must be a force that acts on the apple to cause this acceleration. Let's call this force "gravity", and the associated acceleration the "accleration due to gravity". Then imagine the apple tree is twice as high. Again, we expect the apple to be accelerated toward the ground, so this suggests that this force that we call gravity reaches to the top of the tallest apple tree.Sir Isaac's Most Excellent IdeaNow came Newton's truly brilliant insight: if the force of gravity reaches to the top of the highest tree, might it not reach even further; in particular, might it not reach all the way to the orbit of the Moon! Then, the orbit of the Moon about the Earth could be a consequence of the gravitational force, because the acceleration due to gravity could change the velocity of the Moon in just such a way that it followed an orbit around the earth.This can be illustrated with the thought experiment shown in the following figure. Suppose we fire a cannon horizontally from a high mountain; the projectile will eventually fall to earth, as indicated by the shortest trajectory in the figure, because of the gravitational force directed toward the center of the Earth and the associated acceleration. (Remember that an acceleration is a change in velocity and that velocity is a vector, so it has both a magnitude and a direction. Thus, an acceleration occurs if either or both the magnitude and the direction of the velocity change.)But as we increase the muzzle velocity for our imaginary cannon, the projectile will travel further and further before returning to earth. Finally, Newton reasoned that if the cannon projected the cannon ball with exactly the right velocity, the projectile would travel completely around the Earth, always falling in the gravitational field but never reaching the Earth, which is curving away at the same rate that the projectile falls. That is, the cannon ball would have been put into orbit around the Earth. Newton concluded that the orbit of the Moon was of exactly the same nature: the Moon continuously "fell" in its path around the Earth because of the acceleration due to gravity, thus producing its orbit.By such reasoning, Newton came to the conclusion that any two objects in the Universe exert gravitational attraction on each other, with the force having a universal form:The constant of proportionality G is known as the universal gravitational constant. It is termed a "universal constant" because it is thought to be the same at all places and all times, and thus universally characterizes the intrinsic strength of the gravitational force.Step II PresentationT: Do you remember the conversation between Li Yanping and Professor Wallis?S1: Yes.T: We all know that space walk is difficult and dangerous. What should an astronaut take with him? S2: oxygen can.S3: spacesuit.S4: gravity boots.S5: water system.S6: special food.S7: special ropes.T: Great! Do you know the usage of them? Now discuss them with your partner according to the form on Page31. You can refer to our listening material on Page65.When Ss discuss. Teacher walk around the classroom to give them some help.Step III Speaking (Page31)(After a few minutes.)T: Have you finished? Now speak one or two sentences for each equipment you should take.Sa: I will take water with me in my spacesuit in order to warm or cool me if it’s too cold or too hot. Sb: I will take oxygen can on my back in order to help me breathe oxygen in space.Sc: I’ll wear spacesuit. t can protect me from many dangers. It can carry many necessary things in or on it.Sd: I’ll take space buggy in order to travel on the moon.Se: I’ll take a rope to tie me to the spaceship, or I’ll fly away.Sf: I’ll take special food so that I can eat easily, because the food will float in space.Sg: I’ll wear special sunglasses in order to protect my eyes.Sh:I’ll take space camera in order to take photos.T: Wonderful! Anything else?Si: I’ll wear space boots in order to walk there.T: Very good. You’ve done an excellent job! Do you know how to fill in the form now?Ss: Yes.T: Now look at the screen and check your answer.Sample answer:Step IV Talking (Page62)The task asks the students to work in pairs and give a friend a number of “does” and “don’ts” for going into space. They need to make suggestions using the phrases that they have been given to help them. When they have worked out the advice they can write the suggestions down and read them out to the class.Show the useful expressionsPlease look at/ listen to…Please check that…You need…Please pay attention to…Don’t forget to…You’d better…Make sure you…Watch out for…You mustn’t…T: Now discuss it in pairs. Then I will ask some pairs to read out their instructions.Sample dialogue:S1: I’m going to visit a comet. I’m leaving tomorrow.S2: How exciting! Please check that you have got the correct sort of spacesuit. You need the kind that will keep you warm if it’s too cold.S1: Of course!S2: Make sure you know all the safety rules. It’s not safe to stand on a comet or get too close.There is always a strong wind in space.S1: I won’t leave the spaceship except that I take photos.S2: Photos? Just think of the dust in the air. It will make taking photos very difficult.S1: Well, I’ll take some anyway.S2: Watch out for the space wind! It can be very dangerous.S1: Yes, I know that.S2: Don’t forget to watch the time as you leave the earth. Please pay attention to everything your space guide says. Don’t go off on your own. Look at your temperature on your spacesuit all the time. If it’s too low you need to warm it up and if it’s too high you need to cool it down. Anyway, have a good trip!S1: Thank you. I will.Step V Speaking Task (Page67)The purpose of this task is to use the information the students have gained from the listening text and reading passage in a new situation. They are going to interview the astronomer in our story, Li Yanping, for a newspaper. So in pairs the need to work out some questions to ask him. Each of the pairs needs to think of three different questions. And try to find the answers.Questions and answers:1.What was the most unexpected thing you found out about black holes?The black hole threw out material as well as ate objects.2.How did you know you had got close to a black hole?You can see things disappear into what appears to be an empty space. That’s a black hole.3.What was the most frightening thing that happened to you on this journey?When the gravity of the black hole was pulling us to it’s mouth, and then the spaceship moved round the hole and began to go faster and faster into it; I was terrified because I thought we would be eaten by the hole.4.Why did your watch move slower when your spaceship moved around the hole?I’m not clear yet.5.Have you found something new about black holes?Yes. I thought black holes only eat some objects, but in fact they also spit objects out.Step VI Homework:Prepare for writing a passage about your idea or hopes for traveling in space.。

必修三：Unit4 Astronomy: the science of the starsSection Ⅰ：Warming up、Pre-reading and Reading【拓展训练】：A级测评：（认真填一填，打基础!）Ⅰ．用所给单词的适当形式填空。

1. There ______ a good way to solve the _____ problem.（exist）2. It’s said that Li Yang who had started ‘Crazy English’ used domestic____, which showed that he was a ___husband. (violent)3. Smoking is___________ to your health and it will do _______to your lung. (harm)4. The ________ expression on her face suggested she was ____________ by the _______ maths problem. (puzzle)5. Zhao Benshan held a birthday party in a five-star hotel. Everyone ________ at the party was ________ with a ________ for their _________. (present)II1. Drinking is good to our heart, but too much drinking ______________________ our health.2. He will be on duty _______ tomorrow.3. We can’t ______ people ____ saying what they think.4. We should thank our mother, for she ________________ us and gave us life.5. He studied so hard that he achieved his goal ________.B级测评：（努力做一做，重运用！）I.单项填空1. His plan is excellent in ______, but I don’t think it will work in practice.A. theoryB. exerciseC. themeD. paper2. The ______ cause which led to his business failure was that he relied too much on other people.A. totalB. specialC. naturalD. fundamental3. The shops and streets are very lively. They already have a New Year ______.A. situationB. stateC. atmosphereD. custom4. It is commonly believed that ___________ programmes and video games really cause people to become more aggressive.A. fierceB. violentC. cruelD. fearful5. The talks between the two delegations are expected to ________ economy, business trade and other topics too.A. sayB. coverC. talkD. negotiateII.阅读理解European astronomers have discovered 50 new planets beyond our solar system, including 16 which are a similar size to Earth. This is the largest number of such planets ever announced at one time.The biggest planet of the new batch（一批）is HD85512b, which is 3.6 times the areaof Earth and can be found 36 light-years away in the Vela constellation(船帆座).The findings suggest that more than half of the stars like our sun possess planets, and that many of those worlds are lighter than Saturn(土星).HD85512b is the only one of new planets, called 'super-Earths' that is located in its star system's habitable zone. That's the area where scientists believe water could exist, in liquid form, making a planet potentially habitable.Super-Earths are of particular interest to planet-hunters because it's thought that they could be even more helpful to the development of life than our own planet.This discovery was made by The High Accuracy Radial Velocity Planet Searcher (HARPS)，which is installed at the European Southern Observatory's La Silla Observatory in Chile.HARPS can sense the slight gravitational wobble(引力摇摆)caused by planets as small as Earth, if they have unbelievably close-in orbits（轨道）.HARPS' observations of 376 sunlike stars has led the team to conclude not only that more than half of such stars are surrounded by planets, but also that about 40 percent of them have at least one planet smaller than Saturn.One of the team members, Lisa Kaltenegger, of the Max Planck Institute for Astronomy and the Harvard Smithsonian Centre for Astrophysics, said the latest round of findings marked a new age in the search for habitable planets.1. What information can we get from the first paragraph?A. About 32 percent planets have a similar size to Earth in solar system.B. 50 new planets is the largest number of such planets ever announced.C.16 planets are the largest number of such planets ever announced at one time.D. 50 new planets beyond solar system have been discovered.2. Which of the following information about the HD85512b is false according to the passage?A. HD85512b is the biggest planet of the new batch—discovered 50 new planets.B. HD85512b is 3.6 times the mass of Earth.C. HD85512b is located in its star system's habitable zone, whose water exists in gas form.D. HD85512b can be found 36 light-years away in the Vela constellation.3. Why scientists believe that the HD85512b is a a potentially habitable planet?A. Because HD85512b is dubbed 'super-Earths'.B. Because HD85512b is located in its star system's habitable zone where scientists believe water could exist, in liquid form.C. Because HD85512b is the biggest planet of the new batch.D. Because HD85512b is 3.6 times the mass of Earth and can be found 36 light-years away.4. What is the conclusion based on HARPS’ observation?A. More than half of such stars are surrounded by planets.B. About 40 percent of them have over one planet less massive than Saturn.C. The latest round of findings marked a new age in the search for habitable planets.D. Both A and B.5. what does the underlined word in paragraph 4 mean?A. suitable for livingB. large enoughC. hot enoughD. cold enoughC级测评：(大胆试一试，测能力！)完成句子，根据汉语意思用上括号中所给的单词完成句子。

Unit 4 Astronomy : the science of the stars 教案2(A VISIT TO THE MOON<PART 2>)IntroductionYou are advised to lead in by talking about Tibet which is a wonder for a travel trip. Then help students with their reading of Journey down the Mekong. Translation of the text into Chinese is proposed.Objectives⏹to write an essay to show your problems and the way to overcome themProceduresI. Warming upLet 2-3 students retell the passage learned in the first two periods. Revise some important words and statements.Remind the students of October 15th2003 when Yang Liwei went up into space. (showing pictures or Videos in possible)List the following questions before listening:●What education and experience do you need to become an astronaut?●Do you think there are any special requirements?●What kind of a person makes a good astronaut?●What problems do you think he/she would have in space?(Students report back to the class in fours)II. Listening (P62)Listen to parts 1 and 2. Write down the main idea.Then listen to part 1 finish exercise 3 and part 2 to finish exercise 4.Listen again (if necessary) and fill in the blanks in exercise 5.III. TalkingThis task asks the students to work in pairs and give a friend a number of “dos" and "don'ts" about going into space.Remind the students of having discussed some problems before reading " A VISIT TO THE MOON".Brainstorm a list based on what they remember in pairs.Compare the ideas with another pair and make a report to the class.Make suggestions either to avoid or to solve the problems listed in groups of four. Give some Sample dialogues:IV. Speaking taskThe purpose of this task is to use the information gained from the listening text and reading passage in a new situation.Before the task, work out some questions to ask. For example:●What was the most unexpected thing you found out about "black holes"?●If you cannot see a "black hole", how do you know you have got close to it?●What was the most frightening thing that happened to you on this journey? Prepare the answers to the questions in pairs.Suggested answers to the questions above:●Most unexpected thing: the "black hole" threw out material as well as swallowingobjects.●Knowing when we reached it : You only know you are close to a black hole byseeing things going around what appears to be an empty space. The black hole cannot be seen.●Most frightening experience: when the gravity of the "black hole" was pullingus slowly into its "mouth", and then the spaceship moved around the hole; I was terrified because I thought we would be swallowed by the "hole". Practice the interview in front of the class in pairs.V. ReadingThis reading uses information from the listening text above. It is a science fiction story which imagines what it might be like if an astronaut visited the Moon. Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping and how his weight changed.Suggested sentences:1.The pull of gravity became very strong as he left the earth's atmosphere. Hisweight is normal.2.It disappeared when he was in space. He is weightless.3.It was very light when he was on the moon. He weighs less than on the earth. VI. Reading TaskRemind the students of the knowledge of "black holes".Read the passage to discover the new ideas about "black holes" .VII. Writing taskThe purpose of this writing task is for the students to use the information theyhave gathered on astronomy and their question to each other to write an interestingand lively newspaper article.Analyze the sample writing on page 67 with the students.Leave a writing task as homework.精美句子1、善思则能“从无字句处读书”。