新课标必修3_UNIT4_a_visit_to_the_moon_阅读课件.ppt
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1、UNIT 4A visit to the moonDo you want to go to the moon?Imagine what you will feel when you are in space?How does the force of gravity change if you visit the moon?gravity: force that attracts objects in space towards each other. 万有引力,万有引力,重力,地心引力重力,地心引力What is the earths natural satellite?The moon.(
2、自然卫星)(自然卫星)the natural force that causes an object to move toward the centre of the earth. Gravity The pull of the earths gravity will disappear when you are in space. You will be weightless.The gravity of the moon is very light. You will weigh less than on the earth.Space walk2.It takes the moon on
3、e day to move around the earth.3.The earth is the only planet moving around the sun.True or False1. The earth moves around the sun.TFFF4. There is atmosphere on the moon.1._ was the first person landing on the moon? A. Armstrong B. Yang liwei C. Tom Cruise D. Issac Newton 2. When did he land on the
4、moon? A. 1921 B. 1969 C. 1954 D. 1949 3. When did Yang Liwei go to the space? A. Oct,2003 B. Jan,2003 C. Oct,2004 D. Jan,2002 ABAthe first man in spaceYuri Gagarin The first man on the moonNeil Armstrong? ?Russia 1961U.S.A. 1969Do?you?know?who?they?are?Reading A visit to the moonChina has landed on
5、the moon.Now, lets set out for the moon!Skim the 4 paragraphs quickly, and find out the topic of each paragraph:Para( ):Para( ):Para( ):Para( ): The things I did on the moon. We turned back to the earth. Last month, we visited the moon. How the force of gravity changed when we traveled from the eart
6、h to the moon.1243Fast reading: True or False1. The force of of gravity would change four times on their journey . ( )2. When they were on the moon, they would not feel the gravity because there was no gravity on the moon. ( )3. Since the gravity has changed, their walk didnt need a lot of practice.
7、 ( )FFFDetailed reading: Read Para 2 carefully and underline 3 sentences that show the changes of the gravity. as he left in space on the moon)the way gravity changedleft the earthin spaceon the moonIt?became?very?light.?The?gravity?became?very?strong.?The?gravity?disappeared.?left the earthIn space
8、On the moonThe weight changedHe became very heavy.He had no weight and could float weightlessly around in their spaceship.He was about one-sixth of his weight on the earth.Read the passage and fill in the form.The three ways in which gravity changed for Li Yanping and how his weight changed.1. The p
9、ull of gravity became very strong she left the earths atmosphere. His weight 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 earth.Was their returning painful? What happened to the spaceship?Yes. Fire broke out o
10、n the outside of the spaceship.Q&ALast month I visited the moon with my friend. Before we left, I was told the force of _ would change three times on our journey. Then we took off. Gradually the weight _. When I was in space, it _. We _ weightlessly in the cabin and I _ _. When I was on the moon, I
11、was surprised to find out even walking needs lots of practice _ _ gravity changed. The returning of the earth was very _. We were amazed to watch fire _ _ on the outside of the ship. gravitylesseneddisappearedfloatedcheered upnow thatfrighteningbreak outSummary If you visit the moon1. what problems
12、will you meet with?2. To solve these problems, what things will you take?Please take down some notes while discussing, after discussion, please report it. Example: If I visited the moon, I might have ? problems: The first one is Because To solve this problem, I would take with me. The second one is
13、Discussion:How to cool youYou might have 4 main problems:How to breatheproblemsWhat to eatWhat to wear spacesuitoxygen tanksspace foodthings needed on the moonIf you follow this advice, I think you will have a good time on the moon. waterHomeworkWrite a passage explaining three problems you might me
14、et on the moon and how you will solve it. 1. Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer. 上个月我有幸得到一个机会同我的朋友,上个月我有幸得到一个机会同我的朋友,一位宇航员李彦平一道去太空旅行。一位宇航员李彦平一道去太空旅行。Language points enough的用法的用法:1)形容词作定语:)形容词作定语:enough用在名词前、后都可以。用在名词前、后都可
15、以。 I have enough time to do the work. / I have time enough to do the work. 我有足够的时间做此项工作。我有足够的时间做此项工作。2)用作副词修饰形容词或副词表示程度)用作副词修饰形容词或副词表示程度: enough一般放在形容词或副词一般放在形容词或副词的后边。的后边。 long enough, fast enough, quickly enough等。等。 但一般不说:但一般不说:enough long, enough fast, enough quickly. The boy is old enough to go
16、to school. 这孩子到上学的年龄了。这孩子到上学的年龄了。3)用作副词修饰动词时也需放在动词之后。)用作副词修饰动词时也需放在动词之后。 The meat is not cooked enough. 肉炖得不够熟。肉炖得不够熟。If I had _ (足够长的假期足够长的假期), Id visit Europe, stopping at all the small interesting places.a long enough holiday 2. Then we were off. 随后我们就启程了。随后我们就启程了。 be off = set off 出发;动身出发;动身 I a
17、m off today. 我今天不用上班。我今天不用上班。 We are off today. 今天我们不上班今天我们不上班/今天我们不开张。今天我们不开张。 与与off相关的短语相关的短语: see.off 送行送行 jump off 跳下跳下 give off 散发散发 show off 炫耀炫耀get off 下车下车take off 脱下脱下turn off 关闭关闭pay off 付清;还清付清;还清2. watch do/doing :观看,注视观看,注视 我们看着太阳正在树后面落下。我们看着太阳正在树后面落下。We _ behind the trees. 每一天当他们看到植物生长
18、,他们的每一天当他们看到植物生长,他们的心里都充满了希望。心里都充满了希望。Every day as they _ , their hearts filled with hope. watched the sun settingwatched the plant grow 3. When we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earths. 当我们更接近月当我们更接近月球时,就会感到月球的引力在拉我们。但球时,就会感到月
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