高中英语m3教学资料-unit4m3usinglanguag.ppt

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1、RevisionTextbook P.29.(2-3)Ex.2.1.What he discovered hasnt yet been proved.2.Whether the other astronomers accept his ideas remains a question.3.How life first appeared on earth is still a mystery to scientists.4.Why the earth is becoming warmer is an important topic for research.5.It amazed that ev

2、erybody that stephen Hawking at 65 expericed.6.It is a surprise that Pluto is no longer considered a planet in our solar system.What is gravity?Give an example.Everything will fall back to the earth if it is dropped or thrown away.The pull of the earth is called gravity。Isaac Newton Albert Einstein

3、Stehpen HawkingWhat do they have in common?Who got the idea of gravity first?How?The law of gravityThe theory of relativity black holes Listen and fill in the chart.Isaac NewtonIdea_ bodies have a force which _ things towards them.Development The _ the object the _the gravity.Largepullsbiggerstronge

4、re.g.The earth is circling around the sun.Reading A visit to the moonFast reading 1.How many times did the force of gravity change on their journey?Three times.Read the passage and write down three ways in which gravity and weight changed for Li Yanping.The way gravity and weight changed Left the ea

5、rthIn spaceOn the moon The gravity became very_.The gravity_.It became very_.His weight is_.He is_.He weights _than on earth.strongnormaldisappearedweightless.light.lessZero gravity Discussion:How do you understand“Leaving the moons gravity was not as painful as leaving the earths.But returning to t

6、he earth was very frightening”?That is because the gravity of the moon is less than that of the earth and thus it is not painful.1.a visit to the moon=the jouney pay a visit to sp.=visit sp.(n.)(vt.)call at sp.=drop in at sp.拜访某地拜访某地 call on sb.=drop in on sb.拜访某人拜访某人 4.explain sth to sb.=explain to

7、 sb sth explain to sb that 向某人解释向某人解释 5.the force of gravity 重力重力 6.宾语从句第二个宾语从句第二个that不省略不省略 7.be off 离开离开;动身动身 I must be off now.2.have a chance to do sth take/catch a chance 抓住机会抓住机会 miss/lose a chance 失去机会失去机会 3.make a trip into space 作一次太空旅行作一次太空旅行 send up into space 把把送入太空送入太空 carry up into spa

8、ce 8.escape the pull of the earths gravity 9.fall to the ground 落到地上落到地上 10.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.get/become/be close to 靠近靠近 feel sb doing sth A is(not)as+adj.+a +n.as BHe is not as/so good a boy as Tom.

9、11.cheer(sb.)up （使）感到高兴（使）感到高兴 12.float weightlessly around 飘来飘去飘来飘去 13.climb down the steps 14.step forward 向前迈步向前迈步 15.But when I tried to step forward I found I was carried twice as far as on the earth and fell over.而当我试着向前迈而当我试着向前迈步的时候，我发觉我被送出去很远，步子步的时候，我发觉我被送出去很远，步子的跨度竟是地球上的两倍，因而我摔倒了。的跨度竟是地球上的两

10、倍，因而我摔倒了。英语常见倍数的表示句型：英语常见倍数的表示句型：1).倍数倍数+as+adj./adv.+as“是是的几倍的几倍”My room is twice as large as his.2).倍数倍数+adj./adv.比较级比较级+than“比比(多多/大大)几倍几倍”My room is twice larger than his.3).倍数倍数+the+表示长度表示长度/高度高度/宽度等的名词宽度等的名词+of“是是的长度的长度/高度高度/宽度几倍宽度几倍”My room is twice the size of his.注意：此结构中常用的名词有：注意：此结构中常用的名词有

11、：size,height,weight,length,width depth等。例如：等。例如：练习练习 完成句子或翻译。完成句子或翻译。这把尺子是那把的三倍那么长。这把尺子是那把的三倍那么长。This ruler is three times as long as that one.=This ruler is twice longer than that one.=This ruler is three times the length of that one.16.twice as far as 17.fall over 18.Walking does need a bit of pra

12、tice now that gravity has changed.19.get the hang of 20.We watched,(feeling)amazed as fire broke out on the outside of the spaceship as the earths gravity increased.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

13、took off.As we left the earth,the force was p_.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 amaze

14、d to watch fire b_ _ on the outside of the ship.ravity owerfulessened isappearedfloated heered upnow that rightening reak outHomework 1.背单词背单词/词组词组2.练习卷练习卷 4 1.lucky enough 2.have a chance to do 3.make a trip into space 4.explain sth.to sb.explain to sb that 5.get close to 6.cheer up 7.climb down the steps 8.twice as far as 9.now that 10.get the hang of 11.break out