高中英语《Unit 4 Astronomy the science of the stars》period 3课件 新人教版必修3

1、Astronomy: the science of the starsPeriod threeUsing LanguageUsing LanguageWarming Up 1. Who is the first Chinese astronaut to go into space? 2. What was the date when he circled the earth in space? A. November 15, 2003 B. October 15, 2003 C. September 17, 2004 D. December 17,2004 3. Which country f

2、irst sent people up to space? 4. So far, how many countries have succeeded in sending people up to space? 5. Who is the first man landing on the moon?Yang LiweiAThe Soviet UnionThreeArmstrong (America, 1969)PresentationA VISIT TO THE MOONrocket1. Who had a chance to travel to the moon?2.How did they

3、 travel to the moon?3.Was there anything changed on their journey?Questions 4. How many times would the force of gravity change on their journey? When? Which change would be the most powerful? What about his weight?Questions On the moonThe change of gravityIn spaceVery strongDisappeared Very light L

4、eave the earthOn the earthIn spaceOn 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.5. what happened to him when he tried to step forward?6.

5、 why was returning to the earth very frightening?7. How did he feel?Questions 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 wa

6、s in space, it d_. We f_ weightlessly in the cabin and I c_ _. When I was on the moon, I was surprised to find out even walking needs lots of practice n_ _ gravity changed. The returning of the earth was very f_. We were amazed to watch fire b_ _ on the outside of the ship. gravityheavylesseneddisap

7、pearedfloatedcheered upnow thatrighteningbreak outFill in the blanksDiscussion?If you want to visit the moon, what things you must prepare and what kinds of qualities you should have? 1. Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer

8、. 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）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 qui

9、ckly. 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 small 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。 W

10、e 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 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，月球的引力不像地球的引力

11、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 tree is thr

12、ee 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. 而当我试着向前迈步的时候，我发觉我被送出很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。 2). “A + be + 倍数 +形容词比较级 + than + B ” The Yangtze River is almost twice longer thanthe P

13、earl River. 长江差不多比珠江长两倍。The number of 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. Aft

14、er the experiment, this cell has become 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

15、力改变了，走路也的确需要练一练了。 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.我们惊奇地看着，随着引力的增

16、加，宇宙飞船的外层燃烧起来了。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 _ .break 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 Afirebrokeoutinhishou

17、selastnight. 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break 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Exercisestranslation1太阳系 _2及时，总有一天 _3阻止，制止 _ 4依靠，信赖 _5感到高兴 _ 6既然，由于 _7蔓延 _ 8一般而言 _9除了之外还 _ 10. 作一次太空旅行_solar systemin

18、 timeprevent fromdepend oncheer upnow thatspreadgenerally speakingas well asmake a trip into space11熟悉，掌握 _ 12突发，爆发 _13增多，使繁殖 _ 14大气层，气氛 _15随着时间的流逝_ 16与不同 _17冷却 _ 18失重地 _19全球变暖 _ 20地心引力 _get the hang ofbreak outmultiplyatmosphereAs time went/goes bybe different fromcool downweightlesslyglobal warminggravity21产卵_ 22在表面上_23两