新课标必修3_UNIT4_a_visit_to_the_moon_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?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，重力，地心引力What is the earths natural satellite?The moon.（自然卫星）the nat

2、ural force that causes an object to move toward the centre of the earth. GravityThe 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 one day to move around

3、 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. Yang liwei C. Tom Cruise D. Issac Newton 2. When did he land on the moon? A. 1921 B. 1969 C

4、. 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 the moon.Now, lets set ou

5、t 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 earth to the moon.1243Fast re

6、ading: 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 moon. ( )3. Since the gravity has changed, their walk didnt need a lot of practice. ( )FFFDetailed reading: Rea

7、d 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 spaceOn the moonThe weight change

8、dHe 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 pull of gravity became very s

9、trong 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 on the outside of the spacesh

10、ip.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 was surprised to find out ev

11、en 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 moonwhat problems will you meet with?To solve the

12、se 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 Discussion:How to cool youYou migh

13、t 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 meet on the moon and how you will so

14、lve 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，一位宇航员李彦平一道去太空旅行。Language points enough的用法:1）形容词作定语：enough用在名词前、后都可以。 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。2）

15、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的后边。 long enough, fast enough, quickly enough等。 但一般不说：enough long, enough fast, enough quickly. The boy is old enough to go to school. 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。 The meat is not cooked enough. 肉炖得不够熟。If I had _ (足够长的假期), Id visit Europe, stopping at all the sma

16、ll interesting places.a long enough holiday 2. Then we were off. 随后我们就启程了。 be off = set off 出发；动身 I am off today. 我今天不用上班。 We are off today. 今天我们不上班/今天我们不开张。 与off相关的短语: see.off 送行 jump off 跳下 give off 散发 show off 炫耀get off 下车take off 脱下turn off 关闭pay off 付清；还清2. watch do/doing :观看，注视 我们看着太阳正在树后面落下。W

17、e _ 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 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. 当我们更接近月球时，就会感到月球的引力在拉我们。但是，月球的引

18、力不像地球的引力那么大。 get close to 靠近，接近，指动态变化 be close to 距.近，指状态 The school is close to the post office.4.cheer up : 欢呼，喝彩，感到高兴， 使高兴。当看到球队的到来，人群欢呼起来。_ when they saw the team arrive.他带她去听音乐会来使她高兴。He took her _ to _.The crowd cheered upto the concertcheer her up1). “A + be + 倍数 + as +形容词原级 + as + B”. This tr

19、ee is three times as tall as that one. His father is twice as old as he.5. But when I tried to step forward I found 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 thanthe Pearl River. 长江差不多比珠江长两倍。The number of

20、students in our school is threetimes 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。 经过实验，这种细胞已经变得有那种细胞的三倍大了1. After the experiment, this cell has becom

21、e three times as large as that one.2. After the experiment, this cell has become twice larger than that one.3. After the experiment, this cell has become three times the size of that one. 6. . “walking does need a bit of practice now that gravity has changed.” .既然引力改变了，走路也的确需要练一练了。 now that同since相似，

22、语气较弱，强调人们已知的事实。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 work7.We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increased.amazed 是过去分词，此处做状语用 他进来的时候没有人注意到.He came in _ .br

23、eak out (战争,争吵,疾病等)爆发unnoticed它与happen, take place, come out等词的用法一样，是不及物动词，不能带宾语，不能用于被动语态。 1) 战争爆发The American Civil War broke out in 1861. 美国内战爆发于1861年。 2) 发生争吵A quarrel broke out between them. 他们之间发生了争吵。3) (火灾)发生 Afirebrokeoutinhishouselastnight. 昨晚他家里失火了。与break相关的短语:break down 打破; 毁掉; 破除; 坍塌; 坏掉b

24、reak in 破门而入; 打断break away from 脱离政党; 打破陈规 break through 突围; 突破break up 打碎; 拆散; 分裂; 分解break ones word/promise 食言; 说话不算数1). “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 Ya

25、ngtze River is almost twice longer than the Pearl 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。Part 1: True or FalseThe earth moves around the sun.TFFFT2. It takes the moon one day to move around the earth.3. Earth is the only p

26、lanet 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 the solar system?A. Mars B. Pluto C. Earth D. Jupiter

27、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,2002 ABAIsaac NewtonAlbert EinsteinStephen HawkingDo y

28、ou 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 would not feel the gravity because there was no gravity

29、 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 lightDetail reading: Read Para 2 carefully and underline

30、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 earthScanningListening: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