新课标必修3UNIT4avisittothemoon阅读课件

1、UNIT 4A visit to the moonDo you want to go to the moon?Imagine what you will feel when you are in space?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. The gravity on the moon is

2、1/6 as strong as it is on earth. This means that someone who weighs 150 lbs(磅) on Earth would weigh only 25 lbs on the moon! You might think that this would make walking much easier, but it is actually quite difficult Later in the Apollo(阿波罗) (Moon landing) mission, astronauts discovered that it was

3、 easier to hop(跳) than it was to walk .Space walk2.It takes the moon one day to move around the earth.3.The earth is the only planet moving around the sun.True or FalseThe earth moves around the sun.TFFF4. There is atmosphere on the moon.1._ was the first person landing on the moon? A. Armstrong B.

4、Yang liwei C. Tom Cruise D. Issac Newton 2. When did he land on the 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

5、 know who they are?Reading A visit to the moonChina is planning to land on the moon in the near future.Fast reading: True or FalseThe 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 m

6、oon. ( )3. Since the gravity has changed, their walk didnt need a lot of practice. ( )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 ligh

7、t. The gravity became very strong. The gravity disappeared. The three ways in which gravity changed for Li Yanping and how his weight changed.1. The pull 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

8、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 on 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

9、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 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

10、 _ _ on the outside of the ship. gravitylesseneddisappearedfloatedcheered upnow thatfrighteningbreak outSummary If you visit the moonwhat problems will you meet with?To solve these problems, what things will you take?Please take down some notes while discussing, after discussion, please report it. E

11、xample: 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 Discussion:How to cool youYou might have 4 main problems:How to breatheproblemsWhat to eatWhat to wear spacesuitoxygen tanksspace foodthings needed on the m

12、oonIf you follow this advice, I think you will have a good time on the moon. waterHomeworkWrite a passage explaining three problems you might meet on the moon and how you will solve it.2. watch do/doing :观看，注视 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，他们的心里都充满了希望。Every day as they _ , their

13、hearts filled with hope. watched the sun settingwatched the plant grow1). “A + be + 倍数 + as +形容词原级 + as + B”. This tree is three times as tall as that one. His father is twice as old as he.2). “A + be + 倍数 +形容词比较级 + than +B ” 3. twice as far as The Yangtze River is almost twice longer than the Pearl

14、 River. 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. 我们学校学生数量是他们学校的三倍。 3). “A + be + 倍数 + the +名词 (size, length, amount) + of + B” The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 Do you regret _(pay) 100 dollars

15、for the painting? No, I would gladly have paid _ (两倍那么多了)for it.( paying; twice as much) Translation:1. 既然你忙, 就让我给你做吧。Now that you are busy, let me do it for you.2. 既然人都齐了, 咱们开始干吧。Now that everyone is here lets start work 4. now that 既然； 现在/当时now that同since相似，语气较弱，强调人们已知的事实。Translation:1. 既然你忙, 就让我给

16、你做吧。Now that you are busy, let me do it for you.2. 既然人都齐了, 咱们开始干吧。Now that everyone is here lets start work1). A + be + 倍数 + as +形容词原级 + as + B This tree is three times as tall as that one. 这棵树是那棵树的三倍高(比高两倍)。 His father is twice as old as he. 他父亲是他年龄的两倍(大一倍)。4. But when I tried to step forward, I fo

17、und I was carried twice as far as on the earth and fell over. 2). A + be + 倍数 +形容词比较级 + than + B The Yangtze River is almost twice longer than the Pearl River. 长江几乎比珠江长两倍。 The number of the 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。 3). A + be + 倍数 + the +名

18、词 (size, length, amount) + of + B The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 Do you regret _ (pay) 100 dollars for the painting? No, I would gladly have paid _ (两倍那么多了) for it.( paying; twice as much) How does the force of gravity change if you visit the

19、moon?gravity: force that attracts objects in space towards each other. 万有引力，重力，地心引力What is the earths natural satellite?The moon.（自然卫星）the natural force that causes an object to move toward the centre of the earth. GravityPart 1: True or FalseThe earth moves around the sun.TFFFT2. It takes the moon

20、one day to move around the earth.3. Earth is the only planet moving around the sun.4. There is atmosphere on the moon.5. Pluto is the smallest planet in solar system?Part 2: Multiple choice: 1. _ is the nearest planet from the sun ? A. Venus B Mars C. Mercury D. Uranus C2. _ is the biggest planet in

21、 the solar system?A. Mars B. Pluto C. Earth D. Jupiter D3._ was the first person landing on the moon?A. Armstrong B. Yang liweiC. Tom Cruise D. Issac Newton 4. When did he land on the moon? A. 1921 B. 1969 C. 1954 D. 1949 5. When did Yang Liwei go to the space?Oct,2003 B. Jan,2003 C. Oct,2004 D. Jan

22、,2002 ABAIsaac NewtonAlbert EinsteinStephen HawkingDo you known any famous astronomers and their theory on gravity?P30 Fast reading: Read the passage quickly, finish the true or false questions:The force of of gravity would change four times on their journey . ( )2. When they were on the moon, they

23、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. ( )FFF3 timesThe force of gravity change 1 change_ as he left2 change_ when he was in space3 change_ when he was on the moonvery strongdisappearedvery li

24、ghtDetail reading: Read Para 2 carefully and underline 3 sentences that are about the changes of the force of the gravity. (as he left, in space, on the moon)Step 3On the moonThe change of gravityIn spaceVery strongVery heavyDisappeared Floated weightlessly Very light Leave the earthScanningListenin

25、g:Listen to the tape and answer the following questions:1. How many times would the force of gravity change?2. Was that leaving the moons gravity as painful as leaving the earths?Summary:Last month I visited the moon with my friend. Before we left, I was told the force of g_ would change three times on our journey. Then we took off. As we left the earth, I became very h_. gradually the weight l_. when I was in space, it d_. we f_ weightlessly in the cabin and I c_ _. when i was on the moon, I