必修三unit4洋思公开课a-visit-to-the-moon.ppt

Rao Mingyan Enjoy a videoLearning aims:1)Know about the main idea of the text and how the gravity changed.2)Learn some useful phrases.1.True or False:1)The earth moves around the sun.2)It takes the moon one day to move around the earth.3)Earth is the only planet moving around the sun.4)There is atmosphere on the moon.TFFFCompetition:the first man in spaceYuri Gagarin 尤里尤里加加林加加林 The first man on the moonNeil Armstrong 尼尔尼尔阿姆斯特朗阿姆斯特朗 RussiaU.S.A.Thats one small step for a man,one giant leap for mankind.He is the first astronaut in China who traveled in space.Yang LiweiHe is a hero of our nation in our heart and mind.Imagine:What will you need if you have a chance to visit the moon?oxygen tanks氧气瓶 Space FoodSpacesuits Last month an astronomer,Li Yanping visited the moon with his friend.Enjoy a videoReading A visit to the moonGuide One1)Understand the main idea of each paragraph.2)Find the detail information by reading for 6 minutes.Skim 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.34121.How many times would the gravity change during their journey?A.Twice B.Three times C.Four times D.Once2.Why was the spaceship not falling back to the earth?A.Because it was too far from the earth to feel its pull.B.Because it was too big C.Because it was far from the moon.D.Not mentioned in the text.Comprehending3.Which one is NOT true according to the passage?A.The moons gravity is not as strong as the earthsB.We enjoyed ourselves on the moon.C.Walking on the moon was not very easyD.Leaving the moons gravity was more painful than leaving the earths4.Returning to the earth was very_.A.interesting B.exciting C.frightening D.amazingScanning The force of gravity would change 3 times on their journey.The timeThe gravity changedLeft the earthIn spaceOn the moon1.The pull of gravity became very s .2.The gravity d and we floated .3.The gravity became very l .strongdisappearedlight weightlesslyHis weight changed three times too.Now write them down.The weight changedLeft the earthIn spaceOn the moonHe became very heavy.He had no weight and could float around like a feather.He weighted less than on the earth.1)Learn some useful phrases.2)Fill in the blanks.3)Retell the journey to the moon.Guide twoPhrases:有机会做有机会做sth.升空升空 从树上摔下从树上摔下 更接近于更接近于 感到高兴感到高兴 向前迈步向前迈步 需要练习需要练习 既然既然 熟悉，掌握熟悉，掌握 爆发爆发 have a chance to do rise/rose into the air fall/fell from the tree get closer to cheer up step forward need a bit of practice now that get the hang of break/broke out Last month I visited the moon with my friends.Before we left,I was told the force of g_would change three times on our journey.Then we were off.As the rocket into the air,we were back into our seats.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 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.gravitylesseneddisappearedfloatedcheered upnow thatfrighteningbreak outrosepushed Last month I visited the moon with my friends.Before we left,I was told the force of g_would change three times on our journey.Then we were off.As the rocket into the air,we were back into our seats.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 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.Translate these sentences:1.这是因为月球上没有空气。这是因为月球上没有空气。This is because_ on the moon.2.月球引力没有地球那么强烈月球引力没有地球那么强烈,所以食物会漂所以食物会漂浮。浮。The gravity of the moon is not_ _ the earths,so the food will_ around.there is no airas strongasfloat3.我可能会发现在月球上移动是比较我可能会发现在月球上移动是比较困难的。困难的。4.我需要练习一下走路我需要练习一下走路,一旦我掌握了它一旦我掌握了它,就不会摔倒。就不会摔倒。I may find_ difficult to _ _on the moon.I need _ _ _ practice;once I _ _ of it,I wont fall over.itmove arounda bit ofget thehangGuide threeIn pairs discuss what you need and what problems you will meet if you travel to the moon.You might have some problems:How to breatheproblemsWhat to eatWhat to wear spacesuitsoxygen tanks氧氧气瓶气瓶space foodthings needed on the moonIf you follow this advice,I think you will have a good time on the moon.Discussion:If you visit the moon1.What problems will you meet?2.To solve these problems,what things will you take?Example:If I had the chance to visit the moon,I might haveproblems:The first one is,because To solve this problem,I would take with me.The second one is Discussion:Problem1:how to breathe I will have to carry my oxygen tanks if I go to the moon.This is because there is no air on the moon.I will put the oxygen tanks on my back so that I can breathe all the time.Problem 2.what to eatI will have to take my food with me.Because the gravity of the moon is not as strong as the earths,the food will float away.I need to bring Space Food that I can eat more easily.Problem 3 how to move around My last problem is how to move aroundon the moon.I may find it more difficult to move around on the moon.I will need a bit of practice,once I get the hang of it,I wont fall over.1.cheer up:(cause sb to)become happier or more cheerful 当看到球队的到来，人群欢呼起来。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。他带她去听音乐会来使她高兴。He took her _ to _.The crowd cheered upto the concertcheer her upLanguage points:2.get the hang of sth.(a)learn how to operate or do sth(b)grasp the meaning of sth said or written 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 get the hang of this new typewriter.我不十分了解你的论据的意义我不十分了解你的论据的意义.I dont quite get the hang of your argument.3.now that:because of the fact(that)Now that youve grown up,you can decide it yourself._,(既然你有机会)you should make full use of it.Now that youve got a chance4.break out:(of violent events)start suddenly在深夜在深夜,突然有人吵架突然有人吵架._ suddenly at midnight.A quarrel broke outWe watched amazed as fire broke out on the outside of the spaceship as the earths gravity increased.5.amazed 是过去分词，此处做状语用是过去分词，此处做状语用 他进来的时候没有人注意到他进来的时候没有人注意到.He came in _.unnoticedSurprised at what had happened,Tom didnt know what to do.Lost/Absorbed in deep thought,he didnt hear the sound.HomeworkWrite a passage explaining three problems you might meet on the moon and how you will solve it.