Unit4avisittothemoon及listening.ppt
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1、Unit 4 Astronomy: the science of the starsUsing Language1. Discuss the three ways in which gravity changed on the moon and some information about black holes.2. Listen to the material about the detailed information about different scientists and their ideas.3. Help students learn how to write a pass
2、age.1. Do you want to visit the moon? Brainstorming the photo from the moonWhich country first sent people up to space?1A. The USA B. The Soviet Union C. China23Who is the first man landing on the moon? Who is the first Chinese astronaut to go into space?Yang Liwei Armstrong (America, 1969)2. Do the
3、 following quiz:Chinas first astronaut Yang LiweiSpace buggy登月车1. The type of this test. na2.Who do I have a chance to travel to the moon with ?3. How did we travel to the moon?4. Whats the writing order in this text?5. How many times would the force of gravity change on our journey? Which change wo
4、uld be the most powerful?Li Yanping , an astronomerby spaceshipThree times , the first timein time orderTask one: scanning1.Leaving for the moonPlease read Para.2 and find the change of the gravity and our weight during the journey.Task Two: Careful reading(1)The change of gravityon the moonin space
5、gravityvery lightdisappearingstrongon the earth(2)The change of my weightweighton the moonin spaceon the earthone-sixthheavyno weight2.Walking on the moon What happened to me when I tried to step forward? Why?I was carried twice as far as on the earth and fell over.Because the gravity has changed.3.
6、Returning to the earthBecause fire broke out on the outside of the spaceship as the earths gravity increased.(1)Why was returning to the earth very frightening?(2)How did I feel?I was very exhausted but very excited too.Language points1. But when I tried to step forward, I found I was carried twice
7、as far as on the earth and fell over. (1) “A + be + 倍数倍数 + as +形容词形容词/副词原级副词原级 + as + B” A is twice/three times/ten times as large/far/high/much as B This tree is three times as tall as that one. 这棵树是那棵树的三倍高。这棵树是那棵树的三倍高。His father is twice as old as him.他爸爸的年龄是他的两倍大。他爸爸的年龄是他的两倍大。(2) A + be + 倍数倍数 +形
8、容词形容词/副词比较级副词比较级 + than + B A is twice/three times/ten times larger/higher than BThe Yangtze River is almost twice longer than the Pearl River. 长江差不多比珠江长两倍。长江差不多比珠江长两倍。The number of students in our school is three times larger than that in theirs.我们学校的学生数量比他们学校的多三倍。我们学校的学生数量比他们学校的多三倍。 (3) “A + be +
9、倍数倍数 + the +名词名词 (size, length, amount) + of + B”The new house is four times the size of the old one.新房是旧房的四倍大。新房是旧房的四倍大。 我的房子是你房子的三倍大。我的房子是你房子的三倍大。 My house is three times as large as your house. My house is twice larger than your house. My house is three times the size of your house. A + 实意动词实意动词+
10、 倍数倍数+ as+ 形容词形容词/副词原级副词原级+ 名词名词+ as + B He spent three times as much money as he did.【即学即练即学即练】 Do you regret _ (pay) 100 dollars for the painting? No, I would gladly have paid _ (两倍那么多两倍那么多)for it.2.get the hang of sth.After a while I got the hang of it 过了一会儿我对它有所了解过了一会儿我对它有所了解熟悉某物运作熟悉某物运作了解某事的意义了
11、解某事的意义我一直想知道这部新的打字机的用法。我一直想知道这部新的打字机的用法。Ive been trying to _ this new typewriter.我十分不了解你的论据的意义。我十分不了解你的论据的意义。I dont quite _ your argument.get the hang ofget the hang ofget the hang of sth. 3. break out We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increas
12、ed. 我们看着,惊讶于当地球的引力增加时飞船外层燃烧我们看着,惊讶于当地球的引力增加时飞船外层燃烧起火。起火。break out 与与happen, take place, come out等词的用法等词的用法一样,是不及物动词,不能用于被动语态。一样,是不及物动词,不能用于被动语态。(1) 战争爆发战争爆发The American Civil War broke out in 1861. 美国内战爆发于美国内战爆发于1861年。年。(2) 发生争吵发生争吵A quarrel broke out between them.他们之间发生了争吵。他们之间发生了争吵。(3) (火灾火灾)发生发生A
13、 fire broke out in his house last night. 昨晚他家里失火了。昨晚他家里失火了。【拓展拓展】 break down 打破打破; 坏掉坏掉;人身体垮掉人身体垮掉 break in 破门而入破门而入; 打断打断 break up Pre-listening Isaac Newton (16431727 英国物理学家)英国物理学家)他是他是 经典物理学理论体系的建立者。经典物理学理论体系的建立者。 1665年创立微分;年创立微分;1666年开始研究积年开始研究积分。分。1666年年,开始想到研究重力开始想到研究重力(gravity)问题,苹果落地的传说,也是在此
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