人教版高中英语必修3：unit4 Astronomy the science of the stars

Unit 4 Astronomy: the Science of the StarsUsing LanguageObjectivesTo enjoy the passage A VISIT TO THE MOONTo learn to use the language by reading, listening, speaking and writingProceduresStep 1 Listening1.Ask theSs to look at the pictures and exercises and guess what the listening is about.2.Listen to Part1 and 2 of the tape for the first time and choose the best summary of thelistening text.3.Listen to Part1 and 2 again to fill in the coumn of the chart on page304.Check the answers with the whole class.Step 2 Reading1.Ask the students to read the passage quickly and fill in the form. Then check the answer.2.Listen to the tape and imitate the tape. Then practice reading aloud the dialogue with feeling.Step 3 Language points1．explain 短语：explain (sth) to sb 向…..作解释explain (to sb) why/ how/that etc.Would you explain the problem to the class again?Can you explain to me how to make tea?She explained to me that she couldn’t come because she was ill.2．force n1) (u) 力量powerHe didn’t use much force.2)( c) 部队group of men who have powerair force 空军armed force 武装部队v 强迫，迫使I was forced to open the door.区别：force 强调发挥出的力产生的效果; energy 指力量精力和活力；power 有本领权力之意。

Unit 4 Astronomy：the science of the stars 课文知识点解析Warming UpDiscuss in pairs which science subjects are part of medicine,biochemistry,geophysics or astronomy.分组讨论哪些科学科目是医学，生物化学，地理学或天文学的一部分。

in pairs=two at a time=in twos一次两个，两个一组e.g.Shoes and slippers are sold in pairs.鞋子都是论双卖的。

注意：in+数词/名词（数词/名词以复数形式）e.g.in threes and fours 三三两两的in groups 成群的思维拓展in在这里表示：以……数量/形式、形状等。

e.g.Tourists queue in thousands to see the tomb. 游客数以千计排着队看陵墓。

Reading1.The problem was that the earth became violent because it was not clearwhether the solid shape was to last or not.这一问题变得越来越不确定，因为这一球体形状是否能够维持尚未明朗。

(1)violent adj. 猛烈的；激烈的；强暴的a violent language 激烈的语言a violent storm 猛烈的风暴a violent 猛攻思维拓展violence n.［U］1.暴力，强暴2.猛烈，剧烈，强烈(2)whether...or not... “是……还是……”在这里是主语从句,它还可以引导宾语从句、表语从句、同位语从句和状语从句。

e.g.I don’t know whether he will agree with me.（宾语）我不知道他是否同意我的观点。

Unit 4 Astronomy the science of the stars教案（人教版必修3）Period 5Using language: Extensive reading整体设计教材分析This is the fifth teaching period of this unit. As usual, the teacher should check students’ homework and offer chances for them to go over what they learned in the last period at the beginning of the class. Then lead in the new lesson.In this period, the teaching emphasis will be put on developing students’ reading ability by reading extensively. We will deal with two parts: A VISIT TO THE MOON in Using language on Pages 30-31 and CAUGHT BY A BLACK HOLE in Reading Task on Page 66. While reading, get students learning to use some reading strategies such as skimming, scanning, and so on. As to new words and phrases, the teacher can first find those students feel most difficult and help them to understand. That’s enough here. The reading passage A VISIT TO THE MOON is a science fiction story which imagines what it might be like if an astronaut visited the moon. The purpose of science fiction writing is to combine facts with a story to make students interested and excited about travel in space. It is also to stimulate awe and wonder into the vastness of space. As this reading uses the information students have gained from the listening, the teacher can first ask some students to retell the listening text to lead in the topic and then ask students to read the passage and do some comprehending exercises. While checking their answers with the whole class, deal with language problems students can’t work out by t hemselves. This is an extensive reading lesson, so the teaching steps should be simple. As to the passage CAUGHT BY A BLACK HOLE, it is to continue the above story. The astronomers in the story visit a place in space, which seems impossible for people to reach, the “black hole”. It is to help students imagine what it is like near a “black hole”. Ask students to read through the passage and try to know more about astronomy and gravity.At the end of the class, ask students to retell the two passages. In order to arouse students’ interest, the teacher can hold a competition among them.教学重点1. Develop students’ reading skills by extensive reading.2. Let students read and understand the two passages.教学难点1. Enable students to learn to use reading strategies such as skimming, scanning, and so on.2. Get students to understand the science fiction stories in this unit.三维目标知识目标1. Get students to learn some useful new words and expressions in this part: spaceship, pull, float, mass, cheer up, now that, break out2. Get students to read the science fiction stories.能力目标1. Develop students’ reading skills by extensive reading and e nable them to learn how to use different reading skills to read different reading materials.2. Have students learn to use the useful new words and expressions correctly.3. Enable students to understand the passages and know more about astronomy and gravity.情感目标1. Stimulate students’ interest in astronomy and space travel.2. Develop students’ s ense of group cooperation and teamwork.教学过程→Step 1 Revision1. Check the homework exercises.2. Ask some pairs of students to come to the front and act out their dialogue to review the expressions of giving instructions.3. Have some students talk about Isaac Newton, Albert Einstein and Stephen Hawking as well as their ideas on gravity.→Step 2 Warming upLet students to brainstorm the following questions:What country first sent people into space?How many countries have succeeded in sending people into space so far?Who first landed on the moon?Who is the first Chinese astronaut to go into space?Do you want to visit the moon?→Step 3 Reading1. Ask students to read the passage and then describe the three ways in which gravity changed for Li Yanping and how his weight changed.1) Write down the three ways in which gravity changed for Li Yanping.The way gravity changedLeft the earthIn spaceOn the moonSuggested answers:The way gravity changedLeft the earth The gravity became very strong.In space The gravity disappeared.On the moon The gravity became very light.2) His weight changed three times, too. Now write them down.How his weight changedLeft the earthIn spaceOn the moonSuggested answers:How his weight changedLeft the earth He became very heavy.In space He had no weight and could float around like a feather.On the moon He was about one-sixth of his weight on the earth.2. Ask students to read the passage aloud to the tape and underline all the useful expressions or collocations in the passage. Let students read them aloud and copy them down in their exercise book after class as homework. Try to keep them in mind.Collocations: be lucky enough to do, have a chance, make a trip into space, explain sth. to sb. , the force of gravity, be off, the pull of the earth’s gravity, fall back to the earth, fall to theground, too far from the earth, as if, at all, get close to, cheer up, come on, less than, down the steps, step forward, twice as far as, fall over, a bit of, now that, after a while, get the hang of, break out, on the outside of, be pushed into→Step 4 Important language points1. Before we left, Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful.在启程以前, 李彦平向我解释说, 在我们的航行中会有三次引力的改变, 而第一次的改变将是最强的。

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。

人教版高中英语必修三（Book 3 Unit 4)Unit 4 Astronomy：The science of the stars1. spread vt.&vi. 展开,铺开;散布;扩大;延伸The bird spread its wings. 那只鸟展开了翅膀。

Flies spread disease. 苍蝇传播疾病。

常用结构:spread sth. with sth. 用……抹/涂/铺……spread ...on ...把……抹/涂/铺在……be spread for摆好（桌子）准备spread oneself\[口\]舒展四肢(躺下)spread out张开，伸开，铺开，展开，伸长单项填空Paper making began in China and _____________to Europe.A. SpreadB. grewC. CarriedD. developed解析:选A。

句意为：造纸术起源于中国，又传播到了欧洲。

spread传播。

2. method n. 方法He has introduced a new method of teaching.他引进了一种新的教学方法。

What is the most effective method of birth control?控制出生率的最有效的方法是什么？联想拓展by this means=in this way=with this method 用这种方法易混辨析method/meansmethod侧重"理论方法"，指做某事的具体步骤或程序。

a new teaching method一种新的教学方法means（单复数同形）侧重"通过手段"或"利用工具"去达到某种目的。

选词填空(method/means)（原创）①The quickest of travel _____________is by plane.②She has a very scientific _____________of dealing with political problems. 答案：①means②method3. harmful adj. 有害的常用结构:do sb. harm/do harm to sb. 对某人有害mean no harm 无意伤害别人;没有恶意harm one's image/reputation 损害某人的形象/名声do more harm than good 弊大于利There is no harm in (sb's) doing sth.=It does no harm (for sb.) to do sth. (某人) 做某事无害处be harmful to 对……有害harm n.&v. 损害，伤害Smoking is harmful to your health. 吸烟有害健康。

（新人教版）高中英语必修三《Unit4Astronomy the science of the stars》精品教案Teaching aims:1. Enable the students to learn the usage of key words and phrases and find the rules of the subject clause2. Get the students to cultivate the awareness of protecting the earth Teaching important/difficult points: The subject clauseTeaching methods:Help the students practice learning about language, using a co-operative method.Teaching aids: A multiple-media computer & a blackboardTeaching procedures:Step I Review the important phrases in the text.1.向四面八方_____________2.及时，终于____________3.冷却；平静下来______________4.与…不同_____________5. 依赖…；决定于…____________6. (除... 之外)也，又____________7.成长为，渐成，变为__________ 8.下蛋______________9.产生，分娩______________ 10.轮到某人，接着____________11. 阻止…____________ 12.作为... 的结果，由于__________Step nguage points:1. It exploded loudly with fire and rock they were in time to produce the water vapour,….①in time: sooner or later; 迟早；最后。

高一英语必修3 Unit 4 Astronomy: the science of the stars人教试验版【本讲教化信息】一、教学内容必修3 Unit 4 Astronomy: the science of the stars（一）重点单词（二）重点短语（三）重（难）点句型二、学问精讲（一）重点单词1. system n.[c] 系统；体系；制度systematic adj.He created a new system of teaching foreign languages.他创建了一种新的外语教学体系。

The new system has had a disastrous effect on productivity.新制度对生产率产生了灾难性的影响。

Too much alcohol is bad for the system.过量饮酒对身体有害。

theory n.学说；理论theoretic adj.There are many theories about the origin of life.关于生命起源的学说有许多。

In this way they can better apply theory to practice.这样他们就能更好地把理论运用到实践中去。

Your plan sounds fine in theory it doesn’t work in practice.你的支配在理论上听起来不错，但在实践中无法实施。

2. violent adj. 猛烈的；激烈的；粗暴的violence n.They are launching a violent attack on the enemy.他们对敌人绽开了猛烈的进攻。

The class was shocked by his violent language.全班同学对他激烈的言辞感到震惊。

Children should not be allowed to watch violent movies.不应允许儿童看暴力电影。